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Articoli di riviste sul tema "Beacon navigation system"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 6 febbraio 2022

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1

Park, JaeHyun, MunGyu Choi, YunFei Zu, and JangMyung Lee. "Indoor localization system in a multi-block workspace." Robotica 28, no. 3 (2009): 397–403. http://dx.doi.org/10.1017/s0263574709005712.

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SUMMARYThis paper proposes methodologies and techniques for multi-block navigation of an indoor localization system with active beacon sensors. As service robots and ubiquitous technology have evolved, there is an increasing need for autonomous indoor navigation of mobile robots. In a large number of indoor localization schemes, the absolute position estimation method, relying on navigation beacons or landmarks, has been widely used due to its low cost and high accuracy. However, few of these schemes have managed to expand the applications for use in complicated workspaces involving many rooms

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Wu, Falin, Yuan Liang, Yong Fu, and Chenghao Geng. "A New Indoor Positioning System Using Artificial Encoded Magnetic Fields." Journal of Navigation 71, no. 2 (2017): 299–316. http://dx.doi.org/10.1017/s0373463317000698.

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The demand for accurate indoor positioning continues to grow but the predominant positioning technologies such as Global Navigation Satellite Systems (GNSS) are not suitable for indoor environments due to multipath effects and Non-Line-Of-Sight (NLOS) conditions. This paper presents a new indoor positioning system using artificial encoded magnetic fields, which has good properties for NLOS conditions and fewer multipath effects. The encoded magnetic fields are generated by multiple beacons; each beacon periodically generates unique magnetic field sequences, which consist of a gold code sequenc

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Nedobegkin, M. I., V. A. Sinitsyn, E. A. Sinitsyn, and S. Yu Strakhov. "ENSURING ELECTROMAGNETIC COMPATIBILITY OF RADIONAVIGATION SYSTEMS OF AIRCRAFT AND CELLULAR FACILITIES." Issues of radio electronics, no. 6 (June 21, 2019): 53–59. http://dx.doi.org/10.21778/2218-5453-2019-6-53-59.

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The paper considers the results of the analysis of the causes of unintentional interference to on‑Board and ground equipment of the radio system of near navigation and landing radio beacon landing group, as well as the basic methods and means to ensure the noise immunity of standard equipment on airfields of the Russian Federation. It is noted that the most significant sources of unintended radio interference affecting the operation of on‑Board equipment of radio systems of short‑range navigation of aircraft in its operation with the radio beacons of radio systems of short‑range navigation and

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Kulawiak, Marcin, and Witold Wycinka. "Dynamic Signal Strength Mapping and Analysis by Means of Mobile Geographic Information System." Metrology and Measurement Systems 24, no. 4 (2017): 595–606. http://dx.doi.org/10.1515/mms-2017-0057.

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AbstractBluetooth beacons are becoming increasingly popular for various applications such as marketing or indoor navigation. However, designing a proper beacon installation requires knowledge of the possible sources of interference in the target environment. While theoretically beacon signal strength should decay linearly with log distance, on-site measurements usually reveal that noise from objects such as Wi-Fi networks operating in the vicinity significantly alters the expected signal range. The paper presents a novel mobile Geographic Information System for measurement, mapping and local a

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McGuire, John, Yee Wei Law, Javaan Chahl, and Kutluyıl Doğançay. "Optimal Beacon Placement for Self-Localization Using Three Beacon Bearings." Symmetry 13, no. 1 (2020): 56. http://dx.doi.org/10.3390/sym13010056.

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Autonomous vehicles need to localize themselves within the environment in order to effectively perform most tasks. In situations where a Global Navigation Satellite System such as the Global Positioning System cannot be used for localization, other methods are required. One self-localization method is to use signals transmitted by beacons at known locations to determine the relative distance and bearing of the vehicle from the beacons. Estimation performance is influenced by the beacon–vehicle geometry and the investigation into the optimal placement of beacons is of interest to maximize the e

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6

Pan, Xianfei, and Yuanxin Wu. "Underwater Doppler Navigation with Self-calibration." Journal of Navigation 69, no. 2 (2015): 295–312. http://dx.doi.org/10.1017/s0373463315000703.

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Precise autonomous navigation remains a substantial challenge to all underwater platforms. Inertial Measurement Units (IMU) and Doppler Velocity Logs (DVL) have complementary characteristics and are promising sensors that could enable fully autonomous underwater navigation in unexplored areas without relying on additional external Global Positioning System (GPS) or acoustic beacons. This paper addresses the combined IMU/DVL navigation system from the viewpoint of observability. We show by analysis that under moderate conditions the combined system is observable. Specifically, the DVL parameter

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7

AL-Madani, Basem, Farid Orujov, Rytis Maskeliūnas, Robertas Damaševičius, and Algimantas Venčkauskas. "Fuzzy Logic Type-2 Based Wireless Indoor Localization System for Navigation of Visually Impaired People in Buildings." Sensors 19, no. 9 (2019): 2114. http://dx.doi.org/10.3390/s19092114.

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The ability to precisely locate and navigate a partially impaired or a blind person within a building is increasingly important for a wide variety of public safety and localization services. In this paper, we explore indoor localization algorithms using Bluetooth Low Energy (BLE) beacons. We propose using the BLE beacon’s received signal strength indication (RSSI) and the geometric distance from the current beacon to the fingerprint point in the framework of fuzzy logic for calculating the Euclidean distance for the subsequent determination of location. According to our results, the fingerprin

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8

Liu, Cong, Li Dai, and Ming Yang Zhang. "AIS in the Application of the Navigation System." Advanced Materials Research 912-914 (April 2014): 1131–33. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.1131.

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at present, AIS is equipped on more and more ships. AIS has important significance in navigation and collision avoidance, and VTS, rescue, search, the pilot and so on various aspects. In this paper, the principle of beacon AIS were summarized, and we analyzed the AIS has significance as a auxiliary navigation equipment

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9

Park, Jaehyun, and Jangmyung Lee. "Beacon selection and calibration for the efficient localization of a mobile robot." Robotica 32, no. 1 (2013): 115–31. http://dx.doi.org/10.1017/s0263574713000726.

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SUMMARYThis paper proposes a localization scheme using ultrasonic beacons in an unstructured multi-block workspace. Indoor localization schemes using ultrasonic sensors have widely been studied due to their low costs and high accuracies. However, ultrasonic sensors are susceptible to environmental noise due to the propagation characteristics of ultrasonic waves. In addition, the decay of ultrasonic signals over long distances implies that ultrasonic sensors are unsuitable for use in large indoor environments. To overcome these shortcomings of ultrasonic sensors, while retaining their advantage

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10

Masmitja, Ivan, Spartacus Gomariz, Joaquin Del-Rio, et al. "Optimal path shape for range-only underwater target localization using a Wave Glider." International Journal of Robotics Research 37, no. 12 (2018): 1447–62. http://dx.doi.org/10.1177/0278364918802351.

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Underwater localization using acoustic signals is one of the main components in a navigation system for an autonomous underwater vehicle (AUV) as a more accurate alternative to dead-reckoning techniques. Although different methods based on the idea of multiple beacons have been studied, other approaches use only one beacon, which reduces the system’s costs and deployment complexity. The inverse approach for single-beacon navigation is to use this method for target localization by an underwater or surface vehicle. In this paper, a method of range-only target localization using a Wave Glider is

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11

Yun, Chul-Hwan, and Jungmin So. "A Bluetooth Beacon-Based Indoor Localization and Navigation System." Advanced Science Letters 21, no. 3 (2015): 372–75. http://dx.doi.org/10.1166/asl.2015.5796.

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Yu, Huapeng, and Xu Zhou. "Observability Degree-Based AUV Single Beacon Navigation Trajectory Optimization with Range-Only Measurements." Complexity 2018 (October 3, 2018): 1–10. http://dx.doi.org/10.1155/2018/4056870.

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Aiming at the problem of autonomous underwater vehicle navigation trajectory optimization using single beacon location under direct route condition, a nonlinear system model for AUV single beacon navigation is established, and the linearized system model with error states is constructed by polar coordinate transformation and simplification. Then, current disturbance is considered. To find out the optimum path to utilize range-only measurements, a novel observability degree-based analysis method is proposed, which gives a quantitative insight into convergence characteristics of the error states

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13

Koch, Paul, and Stefan Gewies. "Worldwide Availability of Maritime Medium-Frequency Radio Infrastructure for R-Mode-Supported Navigation." Journal of Marine Science and Engineering 8, no. 3 (2020): 209. http://dx.doi.org/10.3390/jmse8030209.

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The Ranging Mode (R-Mode), a maritime terrestrial navigation system under development, is a promising approach to increase the resilient provision of position, navigation and timing (PNT) information for bridge instruments, which rely on Global Navigation Satellite Systems (GNSS). The R-Mode utilizes existing maritime radio infrastructure such as marine radio beacons, which support maritime traffic with more reliable and accurate PNT data in areas with challenging conditions. This paper analyzes the potential service, which the R-Mode could provide to the mariner if worldwide radio beacons wer

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Razak, M. S. A., T. A. Musa, R. Othman, et al. "PERFORMANCE ANALYSIS OF SISPELSAT MSK-DGNSS RADIO SIGNAL IN PENINSULAR MALAYSIA." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-4/W9 (October 26, 2018): 57–65. http://dx.doi.org/10.5194/isprs-archives-xlii-4-w9-57-2018.

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<p><strong>Abstract.</strong> The use of Global Navigation Satellite System (GNSS) has become essential in providing location based information and navigation. Due to low accuracy of navigation solution, differential technique such as radio-beacon DGNSS has been used widely to augment the user single positioning using GPS. The <i>Sistem Pelayaran Satelit</i> (SISPELSAT) is a national DGNSS radio-beacon system in Malaysia consists of four broadcasting and two monitoring stations operated and managed by Marine Department of Malaysia. It provides a range of frequency

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15

Hou, Guangchao, Qi Shao, Bo Zou, et al. "A Novel Underwater Simultaneous Localization and Mapping Online Algorithm Based on Neural Network." ISPRS International Journal of Geo-Information 9, no. 1 (2019): 5. http://dx.doi.org/10.3390/ijgi9010005.

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The navigation and localization of autonomous underwater vehicles (AUVs) in seawater are of the utmost importance for scientific research, petroleum engineering, search and rescue, and military missions concerning the special environment of seawater. However, there is still no general method for AUVs navigation and localization, especially in the featureless seabed. The reported approaches to solving AUVs navigation and localization problems employ an expensive inertial navigation system (INS), with cumulative errors and dead reckoning, and a high-cost long baseline (LBL) in a featureless subs

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Ferreira, Joao, Ricardo Resende, and Stuart Martinho. "Beacons and BIM Models for Indoor Guidance and Location." Sensors 18, no. 12 (2018): 4374. http://dx.doi.org/10.3390/s18124374.

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This research work uses a simplified approach to combine location information from a beacon’s propagation signal interaction with a mobile device sensor (accelerometer and gyroscope) with local building information to give real-time location and guidance to a user inside a building. This is an interactive process with visualisation information that can help user’s orientation inside unknown buildings and the data stored from different users can provide useful information about users’ movements inside a public building. Beacons installed on the building at specific pre-defined positions emit si

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17

Badcock, J. M., J. A. Dun, K. jay, L. Kleeman, and R. A. Jarvisb. "An autonomous robot navigation system - integrating environmental mapping, path planning, localisation and motion control." Robotica 11, no. 2 (1993): 97–103. http://dx.doi.org/10.1017/s0263574700019196.

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SUMMARYThis paper describes an autonomous robot vehicle which can navigate through an initially unknown obstacle field to a nominated goal or systematically map its working environment. The navigation system uses combined ultrasonic beacon/odometry based localisation, optical range finders for environmental mapping, an A path planning procedure and continuous motion control. The computational support is divided between a graphics workstation 'home base' and a PC hosted transputer array on-board. The integration of all the subsystems cited above has been achieved and many successful navigation

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Baek, Jieun, Yosoon Choi, Chaeyoung Lee, Jangwon Suh, and Sangho Lee. "BBUNS: Bluetooth Beacon-Based Underground Navigation System to Support Mine Haulage Operations." Minerals 7, no. 11 (2017): 228. http://dx.doi.org/10.3390/min7110228.

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J., M., S. S., L. S., N. M., and D. Dhammearatchi. "Pick My Dress: Beacon based Navigation System to find your Suitable Wear." International Journal of Computer Applications 154, no. 1 (2016): 16–20. http://dx.doi.org/10.5120/ijca2016912020.

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Molapo, Nthetsoa Alinah, Reza Malekian, and Lakshmi Nair. "Real-Time Livestock Tracking System with Integration of Sensors and Beacon Navigation." Wireless Personal Communications 104, no. 2 (2018): 853–79. http://dx.doi.org/10.1007/s11277-018-6055-0.

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Kozorez, D. A., and D. M. Kruzhkov. "Selecting the Beacon Locations in a Radio Navigation System for Lunar Missions." Russian Engineering Research 41, no. 8 (2021): 756–58. http://dx.doi.org/10.3103/s1068798x21080189.

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22

Mannay, Khaoula, Jesús Ureña, Álvaro Hernández, Mohsen Machhout, and Taoufik Aguili. "Characterization of an Ultrasonic Local Positioning System for 3D Measurements." Sensors 20, no. 10 (2020): 2794. http://dx.doi.org/10.3390/s20102794.

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Indoor location and positioning systems (ILPS) are used to locate and track people, as well as mobile and/or connected targets, such as robots or smartphones, not only inside buildings with a lack of global navigation satellite systems (GNSS) signals but also in constrained outdoor situations with reduced coverage. Indoor positioning applications and their interest are growing in certain environments, such as commercial centers, airports, hospitals or factories. Several sensory technologies have already been applied to indoor positioning systems, where ultrasounds are a common solution due to

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23

Cheng, Rung-Shiang, Wei-Jun Hong, Jheng-Syun Wang, and Kawuu W. Lin. "Seamless Guidance System Combining GPS, BLE Beacon, and NFC Technologies." Mobile Information Systems 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/5032365.

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Users rely increasingly on Location-Based Services (LBS) and automated navigation/guidance systems nowadays. However, while such services are easily implemented in outdoor environments using Global Positioning System (GPS) technology, a requirement still exists for accurate localization and guidance schemes in indoor settings. Accordingly, the present study proposes a system based on GPS, Bluetooth Low Energy (BLE) beacons, and Near Field Communication (NFC) technology. Through establishing graphic information and the design of algorithm, this study develops a guidance system for indoors and o

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Rymarczyk, Tomasz, Przemysław Adamkiewicz, Jakub Szumowski, Konrad Niderla, Łukasz Gołąbek, and Jan Sikora. "CONCEPT OF DETECTION SYSTEM TO LOCALIZE INSIDE CLOSED AREA BY RADIO TOMOGRAPHIC IMAGING." Informatics Control Measurement in Economy and Environment Protection 7, no. 1 (2017): 92–95. http://dx.doi.org/10.5604/01.3001.0010.4592.

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. System for navigation and localization inside buildings will determine man's location in confined spaces with level of accuracy never yet achieved. System's operation will be mainly based on Bluetooth signals in accordance with the Beacon standard. A worldwide innovation will be the use of Radio Tomographic Imaging (RTI). This technology will enable tracking of moving objects by image reconstruction based on changes of electromagnetic field signal strength (RSS).

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Zhou, Ziye, Yanqing Jiang, Ye Li, Cao Jian, and Yeyi Sun. "A single acoustic beacon-based positioning method for underwater mobile recovery of an AUV." International Journal of Advanced Robotic Systems 15, no. 5 (2018): 172988141880173. http://dx.doi.org/10.1177/1729881418801739.

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This article presents a navigation method for an autonomous underwater vehicle being recovered by a human-occupied vehicle. The autonomous underwater vehicle is considered to carry underwater navigation sensors such as ultra-short baseline, Doppler velocity log, and inertial navigation system. Using these sensors’ information, a navigation module combining the ultra-short baseline positioning and inertial positioning is established. In this study, there is assumed to be no communication between the autonomous underwater vehicle and human-occupied vehicle; thus, to obtain the autonomous underwa

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Akimov, E. V., S. Yu Bakharev, D. A. Kozorez, and D. M. Kruzhkov. "Optimizing the Beacon Positions on the Lunar Surface in a Radio Navigation System." Russian Engineering Research 41, no. 8 (2021): 759–61. http://dx.doi.org/10.3103/s1068798x21080049.

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Et. al., Noor Afni Deraman,. "I-Campus: Towards The Information Integration For Uitm Cawangan Melaka Implementation Of Smart Campus." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 5 (2021): 1699–709. http://dx.doi.org/10.17762/turcomat.v12i5.2164.

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: Due to the advancement in technology and management's needs on the go, i-CAMPUS is developed for UiTM Cawangan Melaka. The i-CAMPUS has been integrated with information and communication technology (ICT) and the Internet of Things (IoT). One of the emerging technologies in IoT that is still new in Malaysia is beacon technology with smartphone applications to serve information based on the user's contextual information. Information is currently is decentralized and disseminated among people on the campus through email and by publishing on the website. In order to allow effective information d

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Huang, Xing Li, Li Yan Liu, Tao Tao Lv, and Wen Bai Li. "Cooperative Navigation for Multiple AUVs Based on Relative Range Measurements with a Single Leader." Applied Mechanics and Materials 556-562 (May 2014): 3117–23. http://dx.doi.org/10.4028/www.scientific.net/amm.556-562.3117.

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his paper deals with the cooperative navigation problem of multiple autonomous underwater vehicles (AUV). A novel method which does not depend on a beacon network like in long baseline positioning system is proposed. The principle of this approach is to realize the cooperative localization of AUVs by using relative range measurements between the leader and the follower vehicles by means of an extended Kalman filter. Simulation results that validate the effectiveness of this approach are presented.

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Shcherbinin, Victor V., Ravil R. Zagidullin, Georgy A. Kvetkin, and Marina S. Sidorova. "Computer Simulation of Complex Electronic Systems of Navigation Systems." ITM Web of Conferences 35 (2020): 04021. http://dx.doi.org/10.1051/itmconf/20203504021.

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The paper proposes ways to reduce the time and improve the quality of development of electronic equipment using computer simulation. The paper considers an example of the development and debugging of a radio-electronic module, which has found its direct application in a local navigation system that operates on the basis of the method of point landmarks. The paper considers a hardware-software complex for the implementation of the study of the health of both individual functional units and radio rangefinder equipment as a whole, as well as for the modernization of the radio-electronic module of

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Simpson, Brian D., Douglas S. Brungart, Ronald C. Dallman, Jacque Joffrion, Michael D. Presnar, and Robert H. Gilkey. "Spatial Audio as a Navigation Aid and Attitude Indicator." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 49, no. 17 (2005): 1602–6. http://dx.doi.org/10.1177/154193120504901722.

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Most current display systems in general aviation (GA) environments employ, at best, relatively simple audio displays that do not fully exploit a pilot's auditory processing capabilities. Spatial audio displays, however, take advantage of the spatial processing capabilities of the auditory system and have the ability to provide, in an intuitive manner, comprehensive information about the status of an aircraft to the pilot. This paper describes a study conducted in order to assess the utility of spatial audio as (1) a navigation aid, and (2) an attitude indicator in an actual flight environment.

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Grinyak, V. M. "Configuration of 3D Indoor Positioning System Based on Bluetooth Beacons." INFORMACIONNYE TEHNOLOGII 27, no. 1 (2021): 32–40. http://dx.doi.org/10.17587/it.27.32-40.

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This paper devoted to research of indoors navigation problems under poor or insufficient quality of satellite navigational data environment. The problem of object positioning in 3D space by Bluetooth devices located indoors forming a multi-position tracking system is considered in this research. Emphasized that in order to succeed for such system it is required to pre-estimate distinctive accuracy. The proposed model interpretation of the positioning problem as the system of linear equations. The classic model interpretation for method of least squares is used for resolution. General problem o

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Zalewski, Paweł. "Integrity Concept for Maritime Autonomous Surface Ships’ Position Sensors." Sensors 20, no. 7 (2020): 2075. http://dx.doi.org/10.3390/s20072075.

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The primary means for electronic position fixing currently in use in majority of contemporary merchant ships are shipborne GPS (Global Positioning System) receivers or DGPS (Differential GPS) and IALA (International Association of Lighthouse Authorities) radio beacon receivers. More advanced GNSS (Global Navigation Satellite System) receivers able to process signals from GPS, Russian GLONASS, Chinese Beidou, European Galileo, Indian IRNSS, Japan QZSS, and satellite-based augmentation systems (SBAS), are still relatively rare in maritime domain. However, it is expected that such combined or mul

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Koshaev, D. A. "Multiple Model Algorithm for Single-Beacon Navigation of Autonomous Underwater Vehicle without Its A Priori Position. Part 2. Simulation." Giroskopiya i Navigatsiya 28, no. 3 (2020): 76–94. http://dx.doi.org/10.17285/0869-7035.0039.

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The algorithm presented earlier is updated for the case when an autonomous unmanned vehicle (AUV) is equipped with a strapdown inertial navigation system (SINS) based on angular rate sensors and a water speed log. The algorithm simulation results for a SINS of navigation grade, a two-component water speed log, two trajectories of the AUV motion when approaching the beacon to a distance of 100 m; two values of the AUV’s speed; solid and fragmented diagrams of received acoustic measurements are presented. The results show that the algorithm provides the AUV positioning accuracy of several meters

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Vaulin, Yu V., F. S. Dubrovin, and A. F. Scherbatyuk. "Algorithms for Determining AUV Initial Unknown Position based on Data from Single-Beacon Mobile Navigation System." Giroskopiya i Navigatsiya 25, no. 1 (2017): 64–77. http://dx.doi.org/10.17285/0869-7035.2017.25.1.064-077.

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Pitor, Ján, and Filip Škultéty. "Non Directional Beacons Checking." Transport and Communications 2, no. 2 (2014): 12–16. http://dx.doi.org/10.26552/tac.c.2014.2.3.

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This paper aims to familiarize experts from other fields with issues of flight check of Non Directional Beacon (NDB) and its assessment. The AT-940 Automatic Flight Inspection System and the aircraft PIPER SENECA are described followed by flight check specifications and procedures. Evaluated were the coverage of NDB Z, NDB ZLA located at Žilina airport and Standard Instrument Approach Procedure for runway 06. The results of evaluation are in paragraph 4. The paper is based on project “Centre of excellence for Air Transport” focused on the impact of air transport on environment photogrammetry,

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Sun, Jie, Feng Hu, Wenming Jin, et al. "Model-Aided Localization and Navigation for Underwater Gliders Using Single-Beacon Travel-Time Differences." Sensors 20, no. 3 (2020): 893. http://dx.doi.org/10.3390/s20030893.

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An accurate motion model and reliable measurements are required for autonomous underwater vehicle localization and navigation in underwater environments. However, without a propeller, underwater gliders have limited maneuverability and carrying capacity, which brings difficulties for modeling and measuring. In this paper, an extended Kalman filter (EKF)-based method, combining a modified kinematic model of underwater gliders with the travel-time differences between signals received from a single beacon, is proposed for estimating the glider positions in a predict-update cycle. First, to accura

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Vaulin, Yu V., F. S. Dubrovin, and A. F. Scherbatyuk. "Some algorithms for determining an unknown initial position of AUV using information from a single beacon navigation system." Gyroscopy and Navigation 8, no. 3 (2017): 209–16. http://dx.doi.org/10.1134/s2075108717030099.

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Смирнов, Д. А., В. Г. Бондарев, А. В. Тепловодский, А. В. Николенко, and К. В. Николенко. "SOLUTION OF A NAVIGATION PROBLEM WITH THE USE OF AN AIRCRAFT LANDING CONTROL SYSTEM USING A GLIDE PATH LASER BEACON." ВЕСТНИК ВОРОНЕЖСКОГО ГОСУДАРСТВЕННОГО ТЕХНИЧЕСКОГО УНИВЕРСИТЕТА, no. 3 (July 2, 2021): 59–65. http://dx.doi.org/10.36622/vstu.2021.17.3.008.

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Oписана проблема существующих методов определения координат на этапе посадки летательного аппарата, которые имеют либо низкую точность, либо для реализации необходимо сложное оборудование. Поэтому были представлены особенности использования системы обеспечения посадки летательного аппарата с применением глиссадного лазерного маяка. Для осуществления посадки по лазерному глиссадному маяку необходимо дооборудование летательного аппарата системой технического зрения с помощью, c которой возможна автоматизация управления. В этом случае система технического зрения в полёте получает навигационную ин

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Cheng, Jianhua, Chao Jiang, Liang Li, Chun Jia, Bing Qi, and Jiaxiang Li. "Long Baseline Tightly Coupled DGNSS Positioning with Ionosphere-Free Inter-System Bias Calibration." Remote Sensing 13, no. 1 (2020): 67. http://dx.doi.org/10.3390/rs13010067.

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Based on the statistical stability of the inter-system bias (ISB), we propose a tightly coupled Differential Global Navigation Satellite System (DGNSS) positioning method by using ionosphere-free combination for the long baseline applications. The proposed method is compatible with the traditional Radio Beacon (RBN) base station implementation. The tightly coupled DGNSS positioning method is utilized at the long baseline rover by eliminating the effect of ionosphere delay with ionosphere-free (IF) based differential ISB calibration. The improved positioning model strength can be obtained with

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Ejofodomi, O'tega, and Godswill Ofualagba. "Subsea Crude Oil Spill Detection Using Robotic Systems." European Journal of Engineering Research and Science 4, no. 12 (2019): 112–16. http://dx.doi.org/10.24018/ejers.2019.4.12.1684.

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Underwater Robotic Oil Spill Surveillance (UROSS) system provides constant and autonomous spill surveillance for subsea pipelines. M900 embedded Radio Frequency Identification tags and readers are used to identify pipeline section for surveillance. GY-521 gyrometer and XL-MaxSonar-WR1 ultrasound sensor are used for autonomous navigation. Spills are detected using a METS methane sensor. After spill detection, images of spill site are captured with a L3C-400 Micro Ultras-Miniature Color Camera and spill location is obtained using GPS. Spill Images and location are transmitted to a remote PC on t

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Li, Guoquan, Enxu Geng, Zhouyang Ye, Yongjun Xu, Jinzhao Lin, and Yu Pang. "Indoor Positioning Algorithm Based on the Improved RSSI Distance Model." Sensors 18, no. 9 (2018): 2820. http://dx.doi.org/10.3390/s18092820.

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The Global Navigation Satellite System (GNSS) cannot achieve accurate positioning and navigation in the indoor environment. Therefore, efficient indoor positioning technology has become a very active research topic. Bluetooth beacon positioning is one of the most widely used technologies. Because of the time-varying characteristics of the Bluetooth received signal strength indication (RSSI), traditional positioning algorithms have large ranging errors because they use fixed path loss models. In this paper, we propose an RSSI real-time correction method based on Bluetooth gateway which is used

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Chen, Zeqiang, and Nengcheng Chen. "A Real-Time and Open Geographic Information System and Its Application for Smart Rivers: A Case Study of the Yangtze River." ISPRS International Journal of Geo-Information 8, no. 3 (2019): 114. http://dx.doi.org/10.3390/ijgi8030114.

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Abstract (sommario):

The timely sharing and interoperation of multi-source cross-sectoral information is an important issue for a Geographic Information System (GIS). To study this issue, a real-time and open GIS model called GeoSensor is proposed in this work. GeoSensor integrates the real-time GIS model, real-time computation framework, and Open Geospatial Consortium services. This paper illustrates the system architecture and the implementation methods of the GeoSensor. One of the methods developed is the conceptual mapping of a real-time GIS data model to open GIS models and services and a real-time computatio

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Meyer, Thomas H., and Ahmed F. Elaksher. "Solving the Multilateration Problem without Iteration." Geomatics 1, no. 3 (2021): 324–34. http://dx.doi.org/10.3390/geomatics1030018.

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Abstract (sommario):

The process of positioning, using only distances from control stations, is called trilateration (or multilateration if the problem is over-determined). The observation equation is Pythagoras’s formula, in terms of the summed squares of coordinate differences and, thus, is nonlinear. There is one observation equation for each control station, at a minimum, which produces a system of simultaneous equations to solve. Over-determined nonlinear systems of simultaneous equations are typically solved using iterative least squares after forming the system as a truncated Taylor’s series, omitting the n

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Vega-Heredia, Manuel, Ilyas Muhammad, Sriharsha Ghanta, Vengadesh Ayyalusami, Siti Aisyah, and Mohan Rajesh Elara. "Multi-Sensor Orientation Tracking for a Façade-Cleaning Robot." Sensors 20, no. 5 (2020): 1483. http://dx.doi.org/10.3390/s20051483.

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Abstract (sommario):

Glass-façade-cleaning robots are an emerging class of service robots. This kind of cleaning robot is designed to operate on vertical surfaces, for which tracking the position and orientation becomes more challenging. In this article, we have presented a glass-façade-cleaning robot, Mantis v2, who can shift from one window panel to another like any other in the market. Due to the complexity of the panel shifting, we proposed and evaluated different methods for estimating its orientation using different kinds of sensors working together on the Robot Operating System (ROS). For this application,

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Sinh, Vu Tien, Vu Thi Quyen, Le Ngoc Huan, and Truong Thi Huong. "Design information orientation supporting system for user." Journal of Mining and Earth Sciences 61, no. 1 (2020): 41–51. http://dx.doi.org/10.46326/jmes.2020.61(1).05.

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Abstract (sommario):

The Bluetooth Low Energy (BLE) technology provides an effective means for indoor location and navigations by using Beacons - BLE devices that can transmit and receive signals over short distances. Device’s information and goods’ information that is linked to a Beacon can be archived by a mobile application, which is basically a Bluetooth - enabled application. In this paper, we present the design and development of an user - driven information IoT system based on the BLE technology. An experimental product, ESMarket, is a system that uses our self - development Beacon - ESBeacon for smart supe

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Cho, Seungkeun, Jaehyun Park, and Jangmyung Lee. "A dynamic localization algorithm for a high-speed mobile robot using indoor GPS." Robotica 30, no. 4 (2011): 681–90. http://dx.doi.org/10.1017/s0263574711000907.

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Abstract (sommario):

SUMMARYThis paper proposes a dynamic localization algorithm for a variable speed mobile robot. In order to localize a mobile robot with active beacon sensors, a relatively long time is needed, since the distance to the beacon is measured using the time-of-flight of the ultrasonic signal. The measurement time does not cause a high error rate when the mobile robot moves slowly. However, with an increase of the mobile robot's speed, the localization error becomes too high to use for accurate mobile robot navigation. Therefore, in this research into high-speed mobile robot operations, instead of u

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Mu, Rongjun, Yuntian Li, Rubin Luo, Bingzhi Su, and Yongzhi Shan. "A Distributed Radio Beacon/IMU/Altimeter Integrated Localization Scheme with Uncertain Initial Beacon Locations for Lunar Pinpoint Landing." Sensors 20, no. 19 (2020): 5643. http://dx.doi.org/10.3390/s20195643.

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Abstract (sommario):

As a growing number of exploration missions have successfully landed on the Moon in recent decades, ground infrastructures, such as radio beacons, have attracted a great deal of attention in the design of navigation systems. None of the available studies regarding integrating beacon measurements for pinpoint landing have considered uncertain initial beacon locations, which are quite common in practice. In this paper, we propose a radio beacon/inertial measurement unit (IMU)/altimeter localization scheme that is sufficiently robust regarding uncertain initial beacon locations. This scheme was d

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Walker, Bruce N., and Jeffrey Lindsay. "Development and Evaluation of a System for Wearable Audio Navigation." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 49, no. 17 (2005): 1607–10. http://dx.doi.org/10.1177/154193120504901723.

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Abstract (sommario):

If it is not possible to use vision when navigating through one's surroundings, moving safely and effectively becomes much harder. In such cases, non-speech audio cues can serve as navigation beacons, as well as denote features in the environment relevant to the user. This paper outlines and summarizes the development and evaluation of a System for Wearable Audio Navigation (SWAN), including an overview of completed, ongoing, and future research relating to the sounds used, the human-system interaction, output hardware, divided attention, and task effects.

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Sobreira, Heber, A. Paulo Moreira, Paulo Costa, and José Lima. "Robust mobile robot localization based on a security laser: an industry case study." Industrial Robot: An International Journal 43, no. 6 (2016): 596–606. http://dx.doi.org/10.1108/ir-01-2016-0026.

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Abstract (sommario):

Purpose This paper aims to address a mobile robot localization system that avoids using a dedicated laser scanner, making it possible to reduce implementation costs and the robot’s size. The system has enough precision and robustness to meet the requirements of industrial environments. Design/methodology/approach Using an algorithm for artificial beacon detection combined with a Kalman Filter and an outlier rejection method, it was possible to enhance the precision and robustness of the overall localization system. Findings Usually, industrial automatic guide vehicles feature two kinds of lase

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Krail, P. M., and H. Brysk. "The shape of a marine streamer in a cross current." GEOPHYSICS 54, no. 3 (1989): 302–8. http://dx.doi.org/10.1190/1.1442655.

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Abstract (sommario):

A serious problem in marine data collection (particularly 3‐D) is the necessity to assign to each hydrophone a precise location on the surface of the earth. The data available for this purpose can come from the vessel’s navigation system, a radio beacon (at the tail buoy), an acoustic transponder (at the head of the streamer and occasionally elsewhere), and magnetic compasses distributed over the length of the cable. The shape of the streamer is commonly reconstructed by fitting a curve’s tangents to the compass readings. The shape deduced in this fashion is highly sensitive to compass errors.

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