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Relevant bibliographies by topics / GNSS (Global Navigation Satellite Systems)

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Academic literature on the topic 'GNSS (Global Navigation Satellite Systems)'

Author: Grafiati

Published: 10 September 2021

Last updated: 11 June 2025

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Journal articles on the topic "GNSS (Global Navigation Satellite Systems)"

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Demyanov, Vladislav, and Yury Yasyukevich. "Space weather: risk factors for Global Navigation Satellite Systems." Solar-Terrestrial Physics 7, no. 2 (2021): 28–47. http://dx.doi.org/10.12737/stp-72202104.

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Extreme space weather events affect the stability and quality of the global navigation satellite systems (GNSS) of the second generation (GPS, GLONASS, Galileo, BeiDou/Compass) and GNSS augmentation. We review the theory about mechanisms behind the impact of geomagnetic storms, ionospheric irregularities, and powerful solar radio bursts on the GNSS user segment. We also summarize experimental observations of the space weather effects on GNSS performance in 2000–2020 to confirm the theory. We analyze the probability of failures in measurements of radio navigation parameters, decrease in positioning accuracy of GNSS users in dual-frequency mode and differential navigation mode (RTK), and in precise point positioning (PPP). Additionally, the review includes data on the occurrence of dangerous and extreme space weather phenomena and the possibility for predicting their im- pact on the GNSS user segment. The main conclusions of the review are as follows: 1) the positioning error in GNSS users may increase up to 10 times in various modes during extreme space weather events, as compared to the background level; 2) GNSS space and ground segments have been significantly modernized over the past decade, thus allowing a substantial in- crease in noise resistance of GNSS under powerful solar radio burst impacts; 3) there is a great possibility for increasing the tracking stability and accuracy of radio navigation parameters by introducing algorithms for adaptive lock loop tuning, taking into account the influence of space weather events; 4) at present, the urgent scientific and technical problem of modernizing GNSS by improving the scientific methodology, hardware and software for monitoring the system integrity and monitoring the availability of required navigation parameters, taking into account the impact of extreme space weather events, is still unresolved.

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Krüger, G., R. Springer, and W. Lechner. "Global Navigation Satellite Systems (GNSS)." Computers and Electronics in Agriculture 11, no. 1 (1994): 3–21. http://dx.doi.org/10.1016/0168-1699(94)90049-3.

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Liu, Congliang, Yueqiang Sun, Weihua Bai, et al. "Effect of Multiple GNSS Integration on the Number and Spatiotemporal Coverage of Radio Occultation Events." Atmosphere 13, no. 5 (2022): 654. http://dx.doi.org/10.3390/atmos13050654.

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The development of global navigation satellite systems (GNSSs) and multi-system compatible radio occultation (RO) techniques provides favorable conditions and opportunities for increasing the number of occultation events and improving their spatiotemporal coverage. The performance of the multiple GNSS RO event number, spatiotemporal coverage, and uniformity need assessments by robust and functional approaches. Firstly, a simulation system of RO events, which took the orbit perturbations into account, was established, and the concepts of global coverage fraction and uniformity of RO events were defined. Secondly, numerical experiments were designed to analyze the GNSS RO performances of a single-receiving satellite and satellite constellations under the condition of using current multiple GNSSs as transmitting satellite systems, in which the Earth was divided into 400 × 400 km2 grids. Finally, the number, timeliness, global coverage fraction, and uniformity of GNSS RO events for a single-receiving satellite and receiving satellite constellations were numerically calculated and analyzed. The results showed that ➀ multiple GNSS integration improved the number of GNSS RO events and their global coverage for a single polar-orbit satellite significantly, e.g., the 24 h multiple GNSS RO event number was about 7.8 times that of the single GNSS system, BeiDou navigation satellite system-3, while the corresponding 24 h global coverage fraction increased nearly 3 times. ➁ In the multiple GNSS integration scenario, the constellation composed of 12 polar-orbit low-Earth-orbit satellites achieved 100% RO event global coverage fraction within 24 h, of which the RO detection capability was comparable to the 100 Spire weather satellites and global positioning system (GPS) RO system. ➂ More GNSS RO events of the polar-orbit constellations were distributed in the middle- and high-latitude zones. Therefore, multiple GNSS integration could increase the RO event number and global coverage significantly to benefit the global climate monitoring and global numerical weather prediction, and the polar-orbit constellations were more favorable to atmospheric detection in middle- and high-latitude regions.

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Demyanov, Vladislav, and Yury Yasyukevich. "Space weather: risk factors for Global Navigation Satellite Systems." Solnechno-Zemnaya Fizika 7, no. 2 (2021): 30–52. http://dx.doi.org/10.12737/szf-72202104.

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Extreme space weather events affect the stability and quality of the global navigation satellite systems (GNSS) of the second generation (GPS, GLONASS, Galileo, BeiDou/Compass) and GNSS augmentation. We review the theory about mechanisms behind the impact of geomagnetic storms, ionospheric irregularities, and powerful solar radio bursts on the GNSS user segment. We also summarize experimental observations of the space weather effects on GNSS performance in 2000–2020 to confirm the theory. We analyze the probability of failures in measurements of radio navigation parameters, decrease in positioning accuracy of GNSS users in dual-frequency mode and differential navigation mode (RTK), and in precise point positioning (PPP). Additionally, the review includes data on the occurrence of dangerous and extreme space weather phenomena and the possibility for predicting their im- pact on the GNSS user segment. The main conclusions of the review are as follows: 1) the positioning error in GNSS users may increase up to 10 times in various modes during extreme space weather events, as compared to the background level; 2) GNSS space and ground segments have been significantly modernized over the past decade, thus allowing a substantial in- crease in noise resistance of GNSS under powerful solar radio burst impacts; 3) there is a great possibility for increasing the tracking stability and accuracy of radio navigation parameters by introducing algorithms for adaptive lock loop tuning, taking into account the influence of space weather events; 4) at present, the urgent scientific and technical problem of modernizing GNSS by improving the scientific methodology, hardware and software for monitoring the system integrity and monitoring the availability of required navigation parameters, taking into account the impact of extreme space weather events, is still unresolved.

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Stryhun, V., R. Barvinok, O. Bilous, and V. Tolmachov. "IMPROVEMENT OF METHODS FOR TESTING OF NAVIGATION USER EQUIPMENT OF GLOBAL NAVIGATION SATELLITE SYSTEMS USING A NAVIGATION SIGNAL SIMULATOR." Наукові праці Державного науково-дослідного інституту випробувань і сертифікації озброєння та військової техніки, no. 6 (December 30, 2020): 95–102. http://dx.doi.org/10.37701/dndivsovt.6.2020.11.

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Satellite navigation technologies are widely used around the world. Existing systems are constantly being upgraded, new satellites are being launched, satellite signals are being improved, military signals that are more resistant to interference are being gated in, ground-based navigation systems are being deployed, and the characteristics of GNSS user equipment are being improved. The effectiveness of GNSS user equipment is influenced by many different factors - from its internal circuit to the signal transmission medium where it is used. Testing of GNSS equipment consists in characterization of system performance and ensuring that manufacturer quality standards are met and expectations of the end user are satisfied. The solution of problems related to the testing of GNSS user equipment is the use of such equipment as simulators, GNSS signal recording and reproduction equipment, broad spectrum signal generation equipment, software for testing GNSS user equipment in laboratory conditions. The abovementioned equipment makes it possible to fully automate the test process by repeatedly performing user-defined scenarios. The use of signal generators for GNSS simulation has advantages over the use of a live GNSS signal. When using live signals the test conditions change constantly and unpredictably, therefore it is unlikely that two identical sequential tests will be performed under the same conditions. Retest is the most important requirement for the test process. The article deals with methods improvement and proposes the choice for rational equipment composition for GNSS user testing equipment.

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Kubáč, Tomáš, and Jakub Hospodka. "Assessment of the Implementation of GNSS into Gliding." MAD - Magazine of Aviation Development 5, no. 4 (2017): 6. http://dx.doi.org/10.14311/mad.2017.04.01.

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Global navigation satellite systems are increasingly part of our lives and many industries including aviation. Glider flying is no exception in this trend. Global navigation satellite systems were part of gliding since the early 1990s. First as official recording devices for simple evidence of sporting performances, then as navigation systems, anti-collision systems and emergency location transmitters. Development of recording application was initiated and supported by International Gliding Commission of World Air Sports Federation in way of certifications for flight recorders. The use of navigation and other modern instruments in gliders has brought many benefits but also risks. However, the advantages outweigh the disadvantages and these systems are now integral part of gliding. With this wide usage of global navigation satellite systems devices, there is great many possibilities how and in which way one can use these systems. Pilots must orient themselves in varied selection of products, which they can use to choose one solution, that fits him. Therefore, to find out how and if pilots use these devices, we created questionnaire survey among 143 Czech glider pilots. We found out, that 84% of them are using global navigation satellite systems devices for official record of flight and for navigation as well. More than half of pilots is using free, not built-in devices. Most common devices are mobile phones up to 5 inches of screen diagonal in combination with approved flight recorder without display. If pilots use mobile device for navigation, 52% of them is using one with Windows Mobile operating system, 33% use Android. Navigational software on these mobile devices is then almost tied between SeeYou Mobile, XCSoar and LK8000. Knowledge about usage preference of global navigation systems devices should help pilots with selection and overall orientation in subject.

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MACIUK, Kamil, and Yuriy RUDYK. "Usage of the global navigation satellite systems in safety and protection issues." Scientific Journal of Silesian University of Technology. Series Transport 109 (December 1, 2020): 93–102. http://dx.doi.org/10.20858/sjsutst.2020.109.9.

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Currently, global navigation satellite systems (GNSS) play a key role in the broad field of security and human life. In principle, almost every area of human activity (for example, mining, energy or construction) systems related to saving human life are introduced. Generally, satellite navigation is an indispensable element of this type of systems. In this paper, authors present basic principles of the GNSS operation and the current state of knowledge about usage of the global navigation satellite systems in the area of safety, protection and rescue issues.

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Haddadi Amlashi, H., F. Samadzadegan, F. Dadrass Javan, and M. Savadkouhi. "COMPARING THE ACCURACY OF GNSS POSITIONING VARIANTS FOR UAV BASED 3D MAP GENERATION." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLIII-B1-2020 (August 6, 2020): 443–49. http://dx.doi.org/10.5194/isprs-archives-xliii-b1-2020-443-2020.

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Abstract. GNSS stands for Global Navigation Satellite System and is the standard generic term for satellite navigation systems that provide autonomous geo-spatial positioning with global coverage. The advantage of having access to multiple satellites is accuracy, redundancy, and availability at all the times. Though satellite systems do not often fail, if one fails GNSS receivers can pick up signals from other systems. If the line of sight is obstructed, having access to multiple satellites is also a benefit. GPS (Global Positioning System, USA), GLONASS (Global Navigation Satellite System, Russia), BeiDou (Compass, China), and some regional systems are positioning systems that are usually used. In recent years with the development of the UAVs and GNSS receivers, it is possible to manage an accurate PPK (Post Processing Kinematic) networks with a GNSS receiver mounted on a UAV to achieve the position of images principal points WGS1984 and to reduce the need for GCPs. But the most important challenge in a PPK task is, which a combination of different GNSS constellations would result in the most accurate computed position in checkpoints. For this purpose, this study focused on a PPK equipped UAV to map an open pit (Golgohar mine near Sirjan city). For the purpose, different combination of GPS, GLONASS and BeiDou used for position computed. Results are plotted and compared and found out having access to multiple constellations while doing a PPK task would bring higher accuracies in building photogrammetric models although it may cause some random error due to the higher values of noise while the number of the satellites increases.

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Cui, Haomeng, and Shoujian Zhang. "Satellite Availability and Service Performance Evaluation for Next-Generation GNSS, RNSS and LEO Augmentation Constellation." Remote Sensing 13, no. 18 (2021): 3698. http://dx.doi.org/10.3390/rs13183698.

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Positioning accuracy is affected by the combined effect of user range errors and the geometric distribution of satellites. Dilution of precision (DOP) is defined as the geometric strength of visible satellites. DOP is calculated based on the satellite broadcast or precise ephemerides. However, because the modernization program of next-generation navigation satellite systems is still under construction, there is a lack of real ephemerides to assess the performance of next-generation constellations. Without requiring real ephemerides, we describe a method to estimate satellite visibility and DOP. The improvement of four next-generation Global Navigation Satellite Systems (four-GNSS-NG), compared to the navigation constellations that are currently in operation (four-GNSS), is statistically analyzed. The augmentation of the full constellation the Quasi-Zenith Satellite System (7-QZSS) and the Navigation with Indian Constellation (11-NavIC) for regional users and the low Earth orbit (LEO) constellation enhancing four-GNSS performance are also analyzed based on this method. The results indicate that the average number visible satellites of the four-GNSS-NG will reach 44.86, and the average geometry DOP (GDOP) will be 1.19, which is an improvement of 17.3% and 7.8%, respectively. With the augmentation of the 120-satellite mixed-orbit LEO constellation, the multi-GNSS visible satellites will increase by 5 to 8 at all latitudes, while the GDOP will be reduced by 6.2% on average. Adding 7-QZSS and 11-NavIC to the four-GNSS-NG, 37.51 to 71.58 satellites are available on global scales. The average position DOP (PDOP), horizontal DOP (HDOP), vertical DOP (VDOP), and time DOP (TDOP) are reduced to 0.82, 0.46, 0.67 and 0.44, respectively.

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Han, Yi, Jia Luo, and Xiaohua Xu. "On the Constellation Design of Multi-GNSS Reflectometry Mission Using the Particle Swarm Optimization Algorithm." Atmosphere 10, no. 12 (2019): 807. http://dx.doi.org/10.3390/atmos10120807.

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Due to the great success of the CYclone Global Navigation Satellite System (CYGNSS) mission, the follow-on GNSS Reflectometry (GNSS-R) missions are being planned. In the perceivable future, signal sources for GNSS-R missions can originate from multiple global navigation satellite systems (GNSSs) including Global Positioning System (GPS), Galileo, GLONASS, and BeiDou. On the other hand, to facilitate the operational capability for sensing ocean, land, and ice features globally, multi-satellite low Earth orbit (LEO) constellations with global coverage and high spatio-temporal resolutions should be considered in the design of the follow-on GNSS-R constellation. In the present study, the particle swarm optimization (PSO) algorithm was applied to seek the optimal configuration parameters of 2D-lattice flower constellations (2D-LFCs) composed of 8, 24, 60, and 120 satellites, respectively, for global GNSS-R observations, and the fitness function was defined as the length of the time for the percentage coverage of the reflection observations reaches 90% of the globe. The configuration parameters for the optimal constellations are presented, and the performances of the optimal constellations for GNSS-R observations including the visited and the revisited coverages, and the spatial and temporal distributions of the reflections were further compared. Although the results showed that all four optimized constellations could observe GNSS reflections with proper temporal and spatial distributions, we recommend the optimal 24- and 60-satellite 2D-LFCs for future GNSS-R missions, taking into account both the performance and efficiency for the deployment of the GNSS-R missions.

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Dissertations / Theses on the topic "GNSS (Global Navigation Satellite Systems)"

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Dodge, Michael. "Global navigation satellite systems (GNSS) and the GPS-Galileo agreement." Thesis, McGill University, 2012. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=106582.

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The law of global navigation satellite systems is a nascent, yet growing academic field. The subject matter it studies, GNSS, has been and is becoming ever-more important in the modern world, both for transportation, as well as for commerce. Indeed, globalization has seen billions of euros in trade associated with both nautical and aviation shipping, and this trend is likely to grow larger with the passage of time. Additionally, the nations of the world are fast realizing the potential of GNSS to make their aviation industries more robust and efficient, with integration of GNSS into air traffic management certain to increase the number of aircraft in flight at any given time, decrease the separation between such craft, and allow for safer takeoffs and landings, as well as improve flight in areas whose terrain has traditionally been quite challenging for contemporary navigational aids. In 2004, the United States and the European Community signed an Agreement intended to ensure radio compatibility and interoperability between the U.S. Global Positioning System and the upcoming Galileo GNSS. This collaboration should enable continued and rapid growth of commerce and navigation improvements to aviation, but several of its provisions are poorly, if at all, defined. As a result, this thesis attempts to elaborate the nature and meaning behind the 2004 Agreement, while also serving to illuminate current legal theories concerning the liability regimes that accompany GNSS.<br>Le droit des systèmes de positionnement par satellites (GNSS) est une nouvelle matière académique qui est en train de se développer. Le GNSS devient de plus en plus important dans le monde d'aujourd'hui tant pour le transport que pour le commerce. La mondialisation a contribué à la croissance du transport des biens par voies maritime et aérienne, et cette tendance ne pourrait qu'augmenter. Les pays du monde se rendent de plus en plus compte des possibilités d'usage du GNSS pour renforcer leurs industries aériennes en employant le GNSS dans la gestion du trafic aérien afin d'augmenter la capacité du ciel en réduisant la distance séparant les aéronefs, de rendre plus sécuritaires les décollages et les atterrissages, et de faciliter l'aviation dans des zones où la technologie contemporaine a prouvé insuffisante. En 2004, les États-Unis et l'Union Européenne ont signé un accord qui assure la radio-compatibilité et l'interopérabilité du système GNSS américain et son équivalent européen, Galileo. Cette collaboration devrait contribuer à une croissance continue du commerce et de l'aviation. Par contre, plusieurs dispositions dans l'accord sont mal ou pas du tout définies. Cette mémoire cherche donc à élaborer la nature ainsi que le sens à donner à l'accord de 2004, tout en exposant les théories juridiques contemporaines concernant la responsabilité juridique pour GNSS.

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Ziebart, Marek. "High precision analytical solar radiation pressure modelling for GNSS spacecraft." Thesis, University of East London, 2001. http://roar.uel.ac.uk/3563/.

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In global navigation satellite systems (GNSS) a fundamental operational component is the calculation of the orbits of the system spacecraft. This requires understanding and modelling the forces that act on the spacecraft. Solar radiation pressure (SRP) is the force caused by the impact of solar photons on the spacecraft surface. For GNSS spacecraft this is a significant force. If SRP is not included in the force model, then the calculated position of the spacecraft can be in error by between one and two hundred metres after one 12-hour orbit. SRP can be modelled using either analytical or empirical methods, or by some combination of the two. Historically, analytical SRP modelling has been somewhat neglected and high precision orbit estimation has relied upon empirical methods to account for SRP. Even so, most of these empirical methods start the estimation process with an a priori analytical model. The success of this empirical approach relies upon having many observations of the range between the system spacecraft and ground-based tracking stations, and works well within the context of the International Global Positioning System Service (IGS) network, which provides the necessary data volume. However, empirical methods do not work as well in operational GNSS, as these typically have a relatively small number of tracking stations. Moreover, empirical methods cannot be applied at the GNSS design stage, where knowledge of the system dynamics plays a key role. Existing methods for calculating analytical SRP models can only be used with relatively simple spacecraft structures, and lack flexibility as tools for analysis. In this study a new method is developed for calculating analytical SRP models that can cope with a high level of complexity in the spacecraft structure. The method is based upon simulating the solar photon flux with a pixel array. Using the method, models are calculated and tested for the Russian GLONASS IIv spacecraft. This particular spacecraft was used as the testbed because, at the time the study was being conducted, an international scientific campaign - called IGEX-98, the International GLONASS Experiment - was being carried out to analyse the Russian system. Developing force models for the spacecraft was one of the campaign goals, and the IGEX-98 steering committee accepted a proposal to use SRP models for GLONASS from this study. A detailed description is given of all the mathematics and physics that was used to develop the modelling technique. The method by which the models can be calculated and applied in practical orbit determination is also provided. In order to test the performance of the SRP models computed for the GLONASS spacecraft using the new method, comparisons were made between two kinds of trajectory. The first kind was calculated by numerical integration of the spacecraft's second order differential equation of motion, where this force model included the custom SRP models developed in the thesis. The second kind of trajectory, which is used as a 'truth' model in the study, was a precise orbit computed by the University of Berne using IGS range data and an empirical SRP model. Such precise orbits are the best estimates available of the true trajectories, as they are derived from the simultaneous estimation of multiple receiver tracking station network positions and spacecraft force model parameters. The repeatability of the Berne orbit is circa 0.75m. The RMS differences between the two trajectories over one twelve-hour orbit (an arc length of circa 160,000km) were 0.7m in height, 1.3m across track and 3.5m along track. This shows that the trajectory derived from the force model alone is very close to the precise orbit. The time-varying pattern of the differences between the two trajectories strongly indicates that the residual mismodelling of the forces acting on the spacecraft is due to thermal re-radiation effects. Further tests of the method were also conducted using satellite laser ranging (SLR) data to calculate arc lengths of 400 days, again using SRP models from the study. This enabled the calculation of model scale factors and additional empirical terms. The average SRP model scale factor was circa 1.01, which implies that the average error in the a priori SRP models calculated for the GLONASS IIv spacecraft is at the 1% level. This is consistent with an error budget based on an assessment of the accuracy of the source data supplied by the Russian authorities. The magnitude and parameterisation of the SLR empirical terms again strongly suggest that most of the remaining mis-modelling is caused by thermal effects. An analysis is given of the effect on the a priori SRP model of unmodelled, SRP-related forces acting along the spacecraft Y-axis. This is the so-called Y-bias. It is shown that whilst Y-bias effects are important in orbit determination, they are less critical in the process of calculating the a priori SRP model. A discussion is provided on how the new method can be adapted to improve the modelling and understanding of thermal re-radiation and Y-bias effects, and also on what benefits might accrue from such studies. The new method is an improvement over existing techniques as it enables the calculation of high precision SRP models that can be applied in the design, operation and scientific analysis of GNSS. A UK patent application has been made in respect of the new method.

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Park, Jihye. "IONOSPHERIC MONITORING BY THE GLOBAL NAVIGATION SATELLITE SYSTEM (GNSS)." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1339715308.

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Bursais, Abdulmalek. "Accelerometry and Global Navigation Satellite Systems Derived Training Loads." Digital Commons @ East Tennessee State University, 2021. https://dc.etsu.edu/etd/3939.

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The objectives of this dissertation include 1) to review accelerometry and Global Navigation Satellite System (GNSS) derived measures used to monitor training load, 2) to investigate the validity and reliability of accelerometers (ACCs) to identify stepping events and quantify training load, 3) to assess the relationship between accelerometry and Global Navigation Satellite Systems (GNSS) derived measures in quantifying training load. In Study I, acceleration data was collected via two tri-axial ACC (Device A and Device B) sampling at 100Hz mounted closely together at the xiphoid process level. Each participant (n=30) performed two trials of straight-line walking, running, and sprinting on a 20m course. Device A was used to assess ACC validity to identify steps and the test-retest reliability of the instrument to quantify the external load. Device A and Device B were used to assess inter-device reliability. The reliability of accelerometry derived metrics Impulse Load (IL) and Magnitude g (MAG) were assessed. In Study II, known distance (DIST) was predicted via acceleration data collected by a tri-axial ACC sampling at 100Hz mounted at the xiphoid process level, simultaneously positional data collected using a triple GNSS unit sampling at 10Hz placed between scapulae. Each participant (n=30) walked different DIST around various movement constraints (small and large circles). Thirty distances were completed around each circle and ranged from 12.57–376.99m. In Study I, the instrument demonstrated a positive predictive value (PPV) of 96.98-99.41% and an agreement of 93.08-96.29% for step detection during all conditions. Good test-retest reliability was found with a coefficient of variation (CV) < 5% for IL and MAG during all locomotor conditions. Good inter-device reliability was also found for all locomotor conditions (IL and MAG CV < 5%). These results indicated that tri-axial ACCs are a valid and reliable tool used to identify steps and quantify external load when movement is completed at a range of speeds. In Study 2, all linear regression models performed well for both movement constraints (R2=0.922-0.999; RMSE=0.047-0.242, p

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Andries, Stephanie. "The Global Navigation Satellite System (GNSS) and the European Galileo program /." Thesis, McGill University, 1999. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=30283.

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The Global Navigation Satellite System (GNSS) is the main element of the CNS/ATM system elaborated by the International Civil Aviation Organization (ICAO).<br>The US GPS and Russian GLONASS are the two existing systems. Both of them were created by the military.<br>Europe is currently developing a civil navigation satellite system: Galileo.<br>This thesis will present some legal issues of the GNSS discussed in the framework of ICAO: sovereignty of States, universal accessibility, continuity and quality of the service, cost recovery and financing, certification and liability.<br>It will also present some legal issues due to the creation of the European Galileo program. The financing, organizational framework, certification and liability will be examined. Finally, ICAO's Charter on the Rights and Obligations of States Relating to GNSS Services will be considered.

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Štefanisko, Ivan. "Integration of inertial navigation with global navigation satellite system." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-221167.

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This paper deals with study of inertial navigation, global navigation satellite system, and their fusion into the one navigation solution. The first part of the work is to calculate the trajectory from accelerometers and gyroscopes measurements. Navigation equations calculate rotation with quaternions and remove gravity sensed by accelerometers. The equation’s output is in earth centred fixed navigation frame. Then, inertial navigation errors are discussed and focused to the bias correction. Theory about INS/GNSS inte- gration compares different integration architecture. The Kalman filter is used to obtain navigation solution for attitude, velocity and position with advantages of both systems.

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Macedo, Scavuzzi Dos Santos Juliana. "The liability of global navigation satellite system (GNSS) used for air navigation in Brazil." Thesis, McGill University, 2013. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=119329.

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The use of Global Navigation Satellite System (GNSS) for air navigation brings important advantages to aviation since it is able to reduce routes, save fuel and diminish greenhouse gas emissions. It is also a more flexible and precise navigational aid that improves flight operations at critical moments such approach, landing and take-off. However, the GNSS signal may fail; and depending on the moment of this failure, its failure could cause an accident. Therefore, air navigation service providers' liability in using GNSS is a concern. Since there is no international treaty that responds to the liability of the GNSS and of air navigation service providers, national solutions appear as a practical and necessary answer to liability claims. Brazil has already started using GNSS in air navigation, and it has a Ground Based Augmentation System (GBAS) that is being tested at Rio de Janeiro International Airport. Therefore, it is important to study the Brazilian liability regime in order to determine if its general liability rules, especially its governmental liability system could apply to the civil liability of the air navigation service providers using GNSS in case of an accident caused by a signal failure. These claims are mostly governed by government liability in Brazil and the legal system in place is able to respond to them. However, since there is much controversy regarding government liability under the Brazilian doctrine, a specific legislation that would be able to balance the different interests at stake seems a reasonable option.<br>L'utilisation du Système de positionnement par satellites (GNSS) pour la navigation aérienne offre de nombreux avantages à l'aviation puisqu'il est en mesure de réduire les itinéraires, d'économiser de l'essence et de diminuer les émissions de gaz à effet de serre. Il constitue également une aide à la navigation plus flexible et plus précise qui améliore les opérations de vol à des moments critiques tels que l'approche, l'atterrissage, et le décollage. Cependant, le signal GNSS pourrait être défectueux. Dépendamment du moment de la défaillance du signal, celle-là pourrait causer un accident. Ainsi donc, la responsabilité des fournisseurs de services de navigation aérienne est sujette à préoccupation. Puisqu'aucun traité international ne se penche sur la question de la responsabilité du GNSS et des fournisseurs de services de navigation aérienne, des solutions nationales apparaissent comme des réponses pratiques et nécessaires aux revendications de responsabilité. Le Brésil a déjà commencé à utiliser la GNSS en navigation aérienne, et a un Ground Based Augmentation System (GBAS) qui est en train d'être testé à l'aéroport international de Rio de Janeiro. Ainsi donc, il est important d'étudier le régime de responsabilité brésilien pour déterminer si ses règles générales de responsabilité – et plus particulièrement son système de responsabilité gouvernemental – pourraient également s'appliquer à la responsabilité civile des fournisseurs de services de navigation aérienne utilisant le GNSS dans le cas d'un accident causé par une défaillance de signal. Ces revendications sont en grande partie gouvernées par la responsabilité gouvernementale au Brésil et le système légal en place pour y répondre. Cependant, puisqu'il y a beaucoup de controverse entourant la responsabilité du gouvernement sous la doctrine brésilienne, une législation spécifique qui serait en mesure d'équilibrer les différents intérêts en jeu semble être une alternative raisonnable.

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Cheng, Cheng. "GNSS Multipath and Interference Mitigation Using Bayesian Methods." Thesis, Toulouse, ISAE, 2015. http://www.theses.fr/2015ESAE0011.

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Les récepteurs GNSS sont utilisés pour estimer la position et la vitesse d’un véhicule à partir de signauxtransmis par des satellites. L’estimation est habituellement réalisée en plusieurs étapes. Lesparamètres des signaux qui concernent le délai de propagation, la phase et la fréquence Dopplerde la porteuse, sont estimés et exploités pour estimer des mesures de pseudo-distances et de delta-distances.Ces mesures sont ensuite utilisées comme observation de la position et de la vitesse parl’algorithme de navigation qui délivre l’état du véhicule. En environnement GNSS dégradé les signauxémis par les satellites GPS peuvent subir des réflexions, des réfractions, et suivre ainsi deschemins multiples, communément connus sous le nom de multi-trajets. Ces signaux induisent desdéformations du signal à différents niveaux dans les récepteurs. En particulier il en résulte une distorsiondes fonctions de corrélation et des fonctions de discrimination, ce qui conduit à des erreursdans les estimées de pseudo-distances et de delta-distances et, en conséquence, à une erreur depositionnement. Bénéficiant d’un état de l’art des approches développées pour l’atténuation deseffets des interférences, de nouvelles techniques sont proposées dans cette thèse afin de réduirel’impact des MT sur les performances des récepteurs, et d’améliorer ainsi la précision de positionnementGPS<br>Global Navigation Satellite Systems (GNSS) receivers calculate the user position, velocity and timeby using the signals received from a set of navigation satellites. In constricted environments, suchas urban canyons or other intensive obstruction scenarios, the signal transmitted by the satelliteis subject to reflection or diffraction and can follow different paths, commonly known as multipath(MP) interferences, before arriving at the antenna of the GNSS receiver. The MP interferencesaffect the signal processing results at different stages in the receiver. For instance, MP signals modifythe correlation and discriminator functions and can introduce errors in pseudo-range (PR) andcarrier phase measurements, resulting finally in GNSS-based positioning errors. Therefore the MPinterference can be considered as a dominant error source in these complex situations. This thesisinvestigates MP mitigation techniques based on signal processing methods at different stages ofthe GNSS receiver. By analyzing and comparing the state-of-the-art MP mitigation approaches, innovativeMP mitigation techniques are proposed in order to reduce the impact of MP interferenceson the GNSS receiver, and to improve the positioning accuracy based on GNSS

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Church, Christopher Michael. "Estimation of Adaptive Antenna Induced Phase Biases in Global Navigation Satellite Systems Receiver Measurements." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1257792743.

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Jaugey, Delphine. "The use of Global Navigation Satellite Systems (GNSS) for air navigation purposes : benefits, vulnerabilities of the systems and legal issues." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99141.

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The existing air navigation services have many shortcomings and a reform was necessary. The new systems (CNS/ATM systems) will be largely dependent on Global Navigation Satellite Systems (GNSS) which can bring significant benefits to air navigation in terms of safety, efficiency, capacity, and economy. However, GNSS have weaknesses which can be reduced but will never be fully eliminated. Depending solely on a system that can be disrupted is not acceptable for safety of life applications, such as aviation. The implementation of GNSS also raises unique legal issues and ICAO has been working on the establishment of a legal framework for GNSS since 1992. Nevertheless, disagreement between states on the need for an international convention remains significant. Legal discussions should not slow down the implementation of GNSS which, when used in conjunction with terrestrial navigation aids, have the potential to revolutionize air navigation.

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Books on the topic "GNSS (Global Navigation Satellite Systems)"

1

Herbert, Lichtenegger, and Wasle Elmar, eds. GNSS--global navigation satellite systems: GPS, GLONASS, Galileo, and more. Springer, 2008.

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ADMINISTRATION, FEDERAL AVIATION. Airworthiness approval of global navigation satellite system (GNSS) equipment. U.S. Dept. of Transportation, Federal Aviation Administration, 2003.

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Grimm, David Eugen. GNSS antenna orientation based on modification of received signal strengths. Schweizerische Geodätische Kommission, 2012.

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Farrell, James L. GNSS aided navigation & tracking: Inertially augmented or autonomous. American Literary Press, 2007.

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Force), RTCA/TF-1. (Task. Task force report on the Global Navigation Satellite System (GNSS): Transition and implementation strategy. RTCA, Inc., 1992.

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European Union. European GNSS (Galileo) open service: Signal in space : interface control document. Publications Office of the European Union, 2010.

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Pany, Thomas. Navigation signal processing for GNSS software receivers. Artech House, 2010.

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Pany, Thomas. Navigation signal processing for GNSS software receivers. Artech House, 2010.

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Groves, Paul D. Principles of GNSS, inertial, and multisensor integrated navigation systems. Artech House, 2008.

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Antennas for global navigation satellite systems. John Wiley & Sons, 2012.

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Book chapters on the topic "GNSS (Global Navigation Satellite Systems)"

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Shi, Chuang, and Na Wei. "Satellite Navigation for Digital Earth." In Manual of Digital Earth. Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-32-9915-3_4.

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Abstract Global navigation satellite systems (GNSSs) have been widely used in navigation, positioning, and timing. China’s BeiDou Navigation Satellite System (BDS) would reach full operational capability with 24 Medium Earth Orbit (MEO), 3 Geosynchronous Equatorial Orbit (GEO) and 3 Inclined Geosynchronous Satellite Orbit (IGSO) satellites by 2020 and would be an important technology for the construction of Digital Earth. This chapter overviews the system structure, signals and service performance of BDS, Global Positioning System (GPS), Navigatsionnaya Sputnikovaya Sistema (GLONASS) and Galileo Navigation Satellite System (Galileo) system. Using a single GNSS, positions with an error of ~ 10 m can be obtained. To enhance the positioning accuracy, various differential techniques have been developed, and GNSS augmentation systems have been established. The typical augmentation systems, e.g., the Wide Area Augmentation System (WAAS), the European Geostationary Navigation Overlay Service (EGNOS), the global differential GPS (GDGPS) system, are introduced in detail. The applications of GNSS technology and augmentation systems for space-time geodetic datum, high-precision positioning and location-based services (LBS) are summarized, providing a reference for GNSS engineers and users.

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Sholarin, Ebenezer A., and Joseph L. Awange. "Global Navigation Satellite System (GNSS)." In Environmental Science and Engineering. Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-27651-9_9.

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Langley, Richard B., Peter J. G. Teunissen, and Oliver Montenbruck. "Introduction to GNSS." In Springer Handbook of Global Navigation Satellite Systems. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-42928-1_1.

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Farrell, Jay A., and Jan Wendel. "GNSS/INS Integration." In Springer Handbook of Global Navigation Satellite Systems. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-42928-1_28.

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Jamil, Abdullah. "Kebijakan Global Navigation Satellite System (GNSS) Negara Pengguna." In Kajian Kebijakan dan Informasi Kedirgantaraan. Mitra Wacana Media, 2015. http://dx.doi.org/10.30536/9786023181360.6.

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Teknologi GNSS semakin banyak digunakan untuk berbagai aplikasi seperti transportasi, pertambangan dan mitigasi bencana. GNSS saat ini telah banyak digunakan di berbagai negara seperti Amerika, Eropa dan Asia Pasifik. Dua negara asia pasifik yang telah banyak menggunakan teknologi GNSS adalah Australia dan Korea Selatan. Kajian ini bertujuan untuk mengetahui kebijakan GNSS di Australia dan Korea Selatan, kemudian membandingkannya dengan penerapannya di Indonesia. Metodologi yang digunakan dalam kajian ini adalah deskriptif dengan menjelaskan kebijakan-kebijakan GNSS yang dikeluarkan oleh Australia dan Korea Selatan kemudian membandingkannya dengan kebijakan GNSS yang dikeluarkan Indonesia. Hasilnya adalah Australia dan Korea Selatan telah mengeluarkan kebijakan GNSS baik terkait pengembangan maupun pemanfaatan GNSS sedangkan Indonesia hingga saat ini belum mempunyai kebijakan pengembangan GNSS. Akan tetapi, Indonesia juga telah mengeluarkan kebijakan terkait pemanfaatan GNSS meskipun masih dalam lingkup lembaga dan belum dibuat secara nasional.

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Valero Ubierna, Constantino. "Positioning systems: GNSS." In Manuali – Scienze Tecnologiche. Firenze University Press, 2020. http://dx.doi.org/10.36253/978-88-5518-044-3.11.

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This topic will provide an overview of the technologies available for georeferencing machinery or any agricultural equipment on the Earth’s surface. Principles of GNSS (global navigation satellite systems) will be presented, along with current satellite constellations such as NAVSTAR GPS, GLONASS, Beidou, Galileo, etc. Error correction based on SBAS services and RTK technology. RTK networks. Definition of static and dynamic errors and accuracy.

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Johnston, Gary, Anna Riddell, and Grant Hausler. "The International GNSS Service." In Springer Handbook of Global Navigation Satellite Systems. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-42928-1_33.

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Li, Hui. "Global Navigation Satellite System (GNSS) Buoy." In Encyclopedia of Ocean Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-10-6963-5_78-1.

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Defraigne, Pascale. "GNSS Time and Frequency Transfer." In Springer Handbook of Global Navigation Satellite Systems. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-42928-1_41.

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Madry, Scott. "Top Ten Things to Know About GNSS." In Global Navigation Satellite Systems and Their Applications. Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4939-2608-4_8.

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Conference papers on the topic "GNSS (Global Navigation Satellite Systems)"

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Leighton, S. "GNSS for civil aviation approach operations." In IET Seminar on Global Navigation Satellite Systems. IEE, 2007. http://dx.doi.org/10.1049/ic:20070508.

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Quinlan, M. "Modernised and future GNSS: Galileo applications." In IET Seminar on Global Navigation Satellite Systems. IEE, 2007. http://dx.doi.org/10.1049/ic:20070510.

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Jenkins, B., A. Urech, and M. J. G. Prieto. "GNSS introduction in the RAIL sector." In IET Seminar on Global Navigation Satellite Systems. IEE, 2007. http://dx.doi.org/10.1049/ic:20070515.

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Unwin, M. "Spaceborne GNSS and the GIOVE-A satellite." In IET Seminar on Global Navigation Satellite Systems. IEE, 2007. http://dx.doi.org/10.1049/ic:20070511.

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Snowball, A. "An update on GNSS vulnerability - threats and solutions." In IET Seminar on Global Navigation Satellite Systems. IEE, 2007. http://dx.doi.org/10.1049/ic:20070512.

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Moore, P. "Geodetic and oceanographic applications of GNSS: recent developments." In IET Seminar on Global Navigation Satellite Systems. IEE, 2007. http://dx.doi.org/10.1049/ic:20070513.

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Cross, P. "High integrity safety-critical GNSS applications on the railways." In IET Seminar on Global Navigation Satellite Systems. IEE, 2007. http://dx.doi.org/10.1049/ic:20070514.

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Vlasov, Igor, Jakov Mikolnikov, Dmitry Semenov, and Igor Titov. "Global navigation satellite systems (GNSS) remote laboratory at BMSTU." In 2013 2nd Experiment@ International Conference (exp.at'13). IEEE, 2013. http://dx.doi.org/10.1109/expat.2013.6703031.

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Cheynet, Etienne, Jasna Bogunović Jakobsen, and Jónas Snæbjörnsson. "Application of Global Navigation Satellite Systems to monitor wind-induced vibrations of a suspension bridge." In IABSE Congress, Stockholm 2016: Challenges in Design and Construction of an Innovative and Sustainable Built Environment. International Association for Bridge and Structural Engineering (IABSE), 2016. http://dx.doi.org/10.2749/stockholm.2016.0057.

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A Global Navigation Satellite System (GNSS) has been deployed on the Lysefjord Bridge in Norway, to measure the static and dynamic displacement of the deck. One objective is to evaluate the systems capability to monitor accurately wind-induced vibrations in high-latitudes and mountainous terrain. GNSS measurements are compared to displacement records obtained from accelerometers located inside the bridge deck. For data of 10 minutes duration, the accelerometers were observed to monitor frequencies below 0.1 Hz with relatively poor accuracy. The GNSS measurements agreed well with the theoretical estimates of the quasi-static and resonant response of the bridge at low frequencies. The completion of the Galileo system in 2020 should expand the applicability and reliability of such systems for structural monitoring purposes in Northern Europe.

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Bernabeu, Joan, Fernando Palafox, Yafeng Li, and Dennis M. Akos. "A Collection of SDRs for Global Navigation Satellite Systems (GNSS)." In 2022 International Technical Meeting of The Institute of Navigation. Institute of Navigation, 2022. http://dx.doi.org/10.33012/2022.18230.

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Reports on the topic "GNSS (Global Navigation Satellite Systems)"

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Robert, J., and Michael Forte. Field evaluation of GNSS/GPS based RTK, RTN, and RTX correction systems. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41864.

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This Coastal and Hydraulic Engineering Technical Note (CHETN) details an evaluation of three Global Navigation Satellite System (GNSS)/Global Positioning System (GPS) real-time correction methods capable of providing centimeter-level positioning. Internet and satellite-delivered correction systems, Real Time Network (RTN) and Real Time eXtended (RTX), respectively, are compared to a traditional ground-based two-way radio transmission correction system, generally referred to as Local RTK, or simply RTK. Results from this study will provide prospective users background information on each of these positioning systems and comparisons of their respective accuracies during in field operations.

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Brodie, Katherine, Brittany Bruder, Richard Slocum, and Nicholas Spore. Simultaneous mapping of coastal topography and bathymetry from a lightweight multicamera UAS. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/41440.

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A low-cost multicamera Unmanned Aircraft System (UAS) is used to simultaneously estimate open-coast topography and bathymetry from a single longitudinal coastal flight. The UAS combines nadir and oblique imagery to create a wide field of view (FOV), which enables collection of mobile, long dwell timeseries of the littoral zone suitable for structure-from motion (SfM), and wave speed inversion algorithms. Resultant digital surface models (DSMs) compare well with terrestrial topographic lidar and bathymetric survey data at Duck, NC, USA, with root-mean-square error (RMSE)/bias of 0.26/–0.05 and 0.34/–0.05 m, respectively. Bathymetric data from another flight at Virginia Beach, VA, USA, demonstrates successful comparison (RMSE/bias of 0.17/0.06 m) in a secondary environment. UAS-derived engineering data products, total volume profiles and shoreline position, were congruent with those calculated from traditional topo-bathymetric surveys at Duck. Capturing both topography and bathymetry within a single flight, the presented multicamera system is more efficient than data acquisition with a single camera UAS; this advantage grows for longer stretches of coastline (10 km). Efficiency increases further with an on-board Global Navigation Satellite System–Inertial Navigation System (GNSS-INS) to eliminate ground control point (GCP) placement. The Appendix reprocesses the Virginia Beach flight with the GNSS–INS input and no GCPs.

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SCHerbakov, V. V. Global Navigation Satellite Systems: Lecture Guide. OFERNIO, 2021. http://dx.doi.org/10.12731/ofernio.2021.24749.

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Klatt, C., and R. Ghoddousi-Fard. Global navigation satellite systems: critical infrastructure sensitive to the Earth's ionosphere. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2015. http://dx.doi.org/10.4095/296405.

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