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Journal articles on the topic 'Satellite Integration'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Eshagh, M., M. Abdollahzadeh, and M. Najafi-Alamdari. "Simplification of Geopotential Perturbing Force Acting on A Satellite." Artificial Satellites 43, no. 2 (January 1, 2008): 45–64. http://dx.doi.org/10.2478/v10018-009-0006-7.

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Simplification of Geopotential Perturbing Force Acting on A SatelliteOne of the aspects of geopotential models is orbit integration of satellites. The geopotential acceleration has the largest influence on a satellite with respect to the other perturbing forces. The equation of motion of satellites is a second-order vector differential equation. These equations are further simplified and developed in this study based on the geopotential force. This new expression is much simpler than the traditional one as it does not derivatives of the associated Legendre functions and the transformations are included in the equations. The maximum degree and order of the geopotential harmonic expansion must be selected prior to the orbit integration purposes. The values of the maximum degree and order of these coefficients depend directly on the satellite's altitude. In this article, behaviour of orbital elements of recent geopotential satellites, such as CHAMP, GRACE and GOCE is considered with respect to the different degree and order of geopotential coefficients. In this case, the maximum degree 116, 109 and 175 were derived for the Earth gravitational field in short arc orbit integration of the CHAMP, GRACE and GOCE, respectively considering millimeter level in perturbations.

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2

Daoud, Fawzi. "Hybrid satellite/terrestrial networks integration." Computer Networks 34, no. 5 (November 2000): 781–97. http://dx.doi.org/10.1016/s1389-1286(00)00128-6.

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3

KOBAYASHI, Minoru, Kazuo OGASAWARA, Tetsuya YAMAMOTO, Shoichiro ASADA, and Nobuhiko FUKUDA. "Artificial satellite separated portion.CFRP integration technology." Journal of the Japan Society for Composite Materials 18, no. 1 (1992): 39–42. http://dx.doi.org/10.6089/jscm.18.39.

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4

Kapovits, Adam, Marius-Iulian Corici, Ilie-Daniel Gheorghe-Pop, Anastasius Gavras, Frank Burkhardt, Thomas Schlichter, and Stefan Covaci. "Satellite communications integration with terrestrial networks." China Communications 15, no. 8 (August 2018): 22–38. http://dx.doi.org/10.1109/cc.2018.8438271.

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5

Natividad, Gabriel. "Integration and Productivity: Satellite-Tracked Evidence." Management Science 60, no. 7 (July 2014): 1698–718. http://dx.doi.org/10.1287/mnsc.2013.1833.

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6

García, A., P. Martín, and J. M. Farto. "Competitive symbolic integration in satellite dynamics." Applied Mathematics Letters 13, no. 8 (November 2000): 43–47. http://dx.doi.org/10.1016/s0893-9659(00)00094-x.

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7

Giambene, Giovanni, Sastri Kota, and Prashant Pillai. "Satellite-5G Integration: A Network Perspective." IEEE Network 32, no. 5 (September 2018): 25–31. http://dx.doi.org/10.1109/mnet.2018.1800037.

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8

Guizani, Mohsen. "Integration of Satellite and 5G Networks." IEEE Network 32, no. 5 (September 2018): 2. http://dx.doi.org/10.1109/mnet.2018.8473411.

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9

Abad, A., A. Elipe, J. F. San-Juan, and S. Serrano. "Is symbolic integration better than numerical integration in satellite dynamics?" Applied Mathematics Letters 17, no. 1 (January 2004): 59–63. http://dx.doi.org/10.1016/s0893-9659(04)90012-2.

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10

Zhang, Chuang, Xiubin Zhao, Chunlei Pang, Liang Zhang, and Bo Feng. "The Influence of Satellite Configuration and Fault Duration Time on the Performance of Fault Detection in GNSS/INS Integration." Sensors 19, no. 9 (May 9, 2019): 2147. http://dx.doi.org/10.3390/s19092147.

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For the integration of global navigation satellite system (GNSS) and inertial navigation system (INS), real-time and accurate fault detection is essential to enhance the reliability and precision of the system. Among the existing methods, the residual chi-square detection is still widely used due to its good real-time performance and sensibility of fault detection. However, further investigation on the performance of fault detection for different observational conditions and fault models is still required. In this paper, the principle of chi-square detection based on the predicted residual and least-squares residual is analyzed and the equivalence between them is deduced. Then, choosing the chi-square detection based on the predicted residual as the research object, the influence of satellite configuration and fault duration time on the performance of fault detection is analyzed in theory. The influence of satellite configuration is analyzed from the number and geometry of visible satellites. Several numerical simulations are conducted to verify the theoretical analysis. The results show that, for a single-epoch fault, the location of faulty measurement and the geometry have little effect on the performance of fault detection, while the number of visible satellites has greater influence on the fault detection performance than the geometry. For a continuous fault, the fault detection performance will decrease with the increase of fault duration time when the value of the fault is near the minimal detectable bias (MDB), and faults occurring on different satellite’s measurement will result in different detection results.

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11

Völk, Florian, Konstantinos Liolis, Marius Corici, Joe Cahill, Robert T. Schwarz, Thomas Schlichter, Eric Troudt, and Andreas Knopp. "Satellite Integration into 5G: Accent on First Over-The-Air Tests of an Edge Node Concept with Integrated Satellite Backhaul." Future Internet 11, no. 9 (September 5, 2019): 193. http://dx.doi.org/10.3390/fi11090193.

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The 5G vision embraces a broad range of applications including the connectivity in underserved and remote areas. In particular, for these applications, satellites are going to play a role in future 5G networks to provide capacity on trains, vessels, aircraft, and for base stations around the globe. In this paper, a 5G edge node concept, developed and evaluated with over-the-air tests using satellites in the geostationary orbit, is presented. The article covers a testbed demonstration study in Europe with a large-scale testbed including satellites and the latest standardization for the network architecture. The main goal of this testbed is to evaluate how satellite networks can be best integrated within the convergent 5G environment. The over-the-air tests for 5G satellite integration in this article are based on a 3GPP Release 15 core network architecture.

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12

Zhou, Hong Wei, Hong Tao Hou, Wang Xun Zhang, Qun Li, and Qiang Chang. "A Model Integration Framework Based Portability for GNSS Simulation." Advanced Materials Research 936 (June 2014): 2302–6. http://dx.doi.org/10.4028/www.scientific.net/amr.936.2302.

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Performance Simulation for Global Navigation Satellite System (GNSS) that be used for performance simulation and evaluation analysis of the GNSS, is a part of the critical algorithm test and system index analysis for GNSS. In this article, the requirements of GNSS are analyzed firstly, and the characteristic of model portability for GNSS is studied, then the model integration framework based on Simulation Model Portability is proposed. The system architecture consists of model design, development, integrating, executing and analysis. Lastly, the regional performance of GALILEO Navigation Satellite System in China is tested and analyzed based on the integration framework.

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13

Aleksanin, A. I., M. G. Aleksanina, P. V. Babyak, and V. S. Eremenko. "Integration of satellite data and service provider." Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa 16, no. 3 (2019): 288–300. http://dx.doi.org/10.21046/2070-7401-2019-16-3-288-300.

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14

Napier, M. "Integration of Satellite and Inertial Positioning Systems." Journal of Navigation 43, no. 1 (January 1990): 48–57. http://dx.doi.org/10.1017/s0373463300013813.

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The Global Positioning System (GPS) offers an absolute positioning accuracy of 15 to 100 metres. Inertial navigation complements GPS in that it provides relative positioning and is totally self-contained. These two positioning sensors are ideally suited for system integration for although there is not necessarily an improvement in accuracy, the integration of GPS with inertial navigation systems (INS) does enable an increase in system performance.

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15

Remmel, Tarmo K., Ferenc Csillag, Scott Mitchell, and Michael A. Wulder. "Integration of forest inventory and satellite imagery:." Forest Ecology and Management 207, no. 3 (March 2005): 405–28. http://dx.doi.org/10.1016/j.foreco.2004.11.023.

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16

Fryskowska, A., M. Wojtkowska, P. Delis, and A. Grochala. "SOME ASPECTS OF SATELLITE IMAGERY INTEGRATION FROM EROS B AND LANDSAT 8." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 21, 2016): 647–52. http://dx.doi.org/10.5194/isprsarchives-xli-b7-647-2016.

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The Landsat 8 satellite which was launched in 2013 is a next generation of the Landsat remote sensing satellites series. It is equipped with two new sensors: the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS). What distinguishes this satellite from the previous is four new bands (coastal aerosol, cirrus and two thermal infrared TIRS bands). Similar to its antecedent, Landsat 8 records electromagnetic radiation in a panchromatic band at a range of 0.5&dash;0.9 μm with a spatial resolution equal to 15 m. In the paper, multispectral imagery integration capabilities of Landsat 8 with data from the new high resolution panchromatic EROS B satellite are analyzed. The range of panchromatic band for EROS B is 0.4&dash;0.9 μm and spatial resolution is 0.7 m. Research relied on improving the spatial resolution of natural color band combinations (bands: 4,3,2) and of desired false color band composition of Landsat 8 satellite imagery. For this purpose, six algorithms have been tested: Brovey’s, Mulitplicative, PCA, IHS, Ehler's, HPF. On the basis of the visual assessment, it was concluded that the best results of multispectral and panchromatic image integration, regardless land cover, are obtained for the multiplicative method. These conclusions were confirmed by statistical analysis using correlation coefficient, ERGAS and R-RMSE indicators.

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17

Fryskowska, A., M. Wojtkowska, P. Delis, and A. Grochala. "SOME ASPECTS OF SATELLITE IMAGERY INTEGRATION FROM EROS B AND LANDSAT 8." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B7 (June 21, 2016): 647–52. http://dx.doi.org/10.5194/isprs-archives-xli-b7-647-2016.

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The Landsat 8 satellite which was launched in 2013 is a next generation of the Landsat remote sensing satellites series. It is equipped with two new sensors: the Operational Land Imager (OLI) and the Thermal Infrared Sensor (TIRS). What distinguishes this satellite from the previous is four new bands (coastal aerosol, cirrus and two thermal infrared TIRS bands). Similar to its antecedent, Landsat 8 records electromagnetic radiation in a panchromatic band at a range of 0.5&dash;0.9 μm with a spatial resolution equal to 15 m. In the paper, multispectral imagery integration capabilities of Landsat 8 with data from the new high resolution panchromatic EROS B satellite are analyzed. The range of panchromatic band for EROS B is 0.4&dash;0.9 μm and spatial resolution is 0.7 m. Research relied on improving the spatial resolution of natural color band combinations (bands: 4,3,2) and of desired false color band composition of Landsat 8 satellite imagery. For this purpose, six algorithms have been tested: Brovey’s, Mulitplicative, PCA, IHS, Ehler's, HPF. On the basis of the visual assessment, it was concluded that the best results of multispectral and panchromatic image integration, regardless land cover, are obtained for the multiplicative method. These conclusions were confirmed by statistical analysis using correlation coefficient, ERGAS and R-RMSE indicators.

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18

He, Lei, and Dong Liang Qin. "Ballistic Measurement and Parameter Estimation of Ballistic Missile with Early Warning Satellite." Advanced Materials Research 712-715 (June 2013): 1960–64. http://dx.doi.org/10.4028/www.scientific.net/amr.712-715.1960.

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Space infrared early warning satellite is an important platform for detecting ballistic missile launch and trajectory. This paper established observation satellite motion model, and the motion state of the satellite at any time was gotten based on its initial information by numerical integration methods. According the theory of double satellites location and satellite observation data of ballistic missile, the observation trajectory of ballistic missile was fitted. The trajectory was used to build the motion model of ballistic missile, and the position, speed and other parameters of the ballistic missile can be inferred. Finally, simulation experiment was conducted.

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19

Ciabatta, Luca, Luca Brocca, Christian Massari, Tommaso Moramarco, Silvia Puca, Angelo Rinollo, Simone Gabellani, and Wolfgang Wagner. "Integration of Satellite Soil Moisture and Rainfall Observations over the Italian Territory." Journal of Hydrometeorology 16, no. 3 (May 27, 2015): 1341–55. http://dx.doi.org/10.1175/jhm-d-14-0108.1.

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Abstract State-of-the-art rainfall products obtained by satellites are often the only way of measuring rainfall in remote areas of the world. However, it is well known that they may fail in properly reproducing the amount of precipitation reaching the ground, which is of paramount importance for hydrological applications. To address this issue, an integration between satellite rainfall and soil moisture SM products is proposed here by using an algorithm, SM2RAIN, which estimates rainfall from SM observations. A nudging scheme is used for integrating SM-derived and state-of-the-art rainfall products. Two satellite rainfall products are considered: H05 provided by EUMESAT and the real-time (3B42-RT) TMPA product provided by NASA. The rainfall dataset obtained through SM2RAIN, SM2RASC, considers SM retrievals from the Advanced Scatterometer (ASCAT). The rainfall datasets are compared with quality-checked daily rainfall observations throughout the Italian territory in the period 2010–13. In the validation period 2012–13, the integrated products show improved performances in terms of correlation with an increase in median values, for 5-day rainfall accumulations, of 26% (18%) when SM2RASC is integrated with the H05 (3B42-RT) product. Also, the median root-mean-square error of the integrated products is reduced by 18% and 17% with respect to H05 and 3B42-RT, respectively. The integration of the products is found to improve the threat score for medium–high rainfall accumulations. Since SM2RASC, H05, and 3B42-RT datasets are provided in near–real time, their integration might provide more reliable rainfall products for operational applications, for example, for flood and landslide early warning systems.

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20

Trubitsina, A. A. "Numerical integration of nonregular functions in satellite dynamics." Advances in Space Research 19, no. 11 (January 1997): 1709–13. http://dx.doi.org/10.1016/s0273-1177(97)00331-1.

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21

Casoni, Maurizio, Carlo Augusto Grazia, Martin Klapez, Natale Patriciello, A. Amditis, and E. Sdongos. "Integration of satellite and LTE for disaster recovery." IEEE Communications Magazine 53, no. 3 (March 2015): 47–53. http://dx.doi.org/10.1109/mcom.2015.7060481.

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22

Balakrishna, S., and V. B. Sharma. "INTEGRATION OF SATELLITE DATA IN COASTAL PROCESS MODELLING." ISH Journal of Hydraulic Engineering 15, sup1 (January 2009): 297–309. http://dx.doi.org/10.1080/09715010.2009.10514981.

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23

Aris. "Integration of Quantum Cryptography through Satellite Networks Transmission." American Journal of Applied Sciences 8, no. 1 (January 1, 2011): 71–76. http://dx.doi.org/10.3844/ajassp.2011.71.76.

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24

Pierson, L. S., and M. L. Kahn. "Integration of satellite bacteriophage P4 in Escherichia coli." Journal of Molecular Biology 196, no. 3 (August 1987): 487–96. http://dx.doi.org/10.1016/0022-2836(87)90026-x.

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25

Škrobonja, Antonio, Sanjin Valčić, Srđan Žuškin, and David Brčić. "On VDES/ECDIS Integration." Pomorstvo 34, no. 1 (June 30, 2020): 195–200. http://dx.doi.org/10.31217/p.34.1.21.

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Recently, the International Association of Marine Aids to Navigation and Lighthouse Authorities (IALA) has developed VHF data exchange system (VDES). It is recognized as an efficient tool for the usage of the radio spectrum with applied new techniques in information transmission. The authors propose the possibilities of VDES to be integrated with Electronic Chart Display and Information system (ECDIS), performing as a single point for data acquisition and distribution for monitoring and processing in the ECDIS. VDES satellite link component is emphasized as a part which could extend the safety of navigation as well as possible VDES applications for future service. A completely new architecture is proposed to get efficient and reliable data path, especially in ship’s communications. VDES could become a key point in safe and secure communications with both terrestrial and satellite components, resulting in a new area of integration possibilities. The main role of VDES in ship communications could be in critical instances of the ship’s operation as well as distress situations.

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26

Ji, Shengyue, Wu Chen, Xiaoli Ding, Yongqi Chen, Chunmei Zhao, and Congwei Hu. "Potential Benefits of GPS/GLONASS/GALILEO Integration in an Urban Canyon – Hong Kong." Journal of Navigation 63, no. 4 (September 13, 2010): 681–93. http://dx.doi.org/10.1017/s0373463310000081.

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With the existing GPS, the replenishment of GLONASS and the launching of Galileo there will be three satellite navigation systems in the future, with a total of more than 80 satellites. So it can be expected that the performance of the global navigation satellite system (GNSS) will be greatly improved, especially in urban environments. This paper studies the potential benefits of GPS/GLONASS/Galileo integration in an urban canyon – Hong Kong. The navigation performances of four choices (GPS alone, GPS+GLONASS, GPS+Galileo and GPS+GLONASS+Galileo) are evaluated in terms of availability, coverage, and continuity based on simulation. The results show that there are significant improvements in availability, coverage and continuity, by using GPS+GLONASS+Galileo compared with the other choices. But the performance is still not good enough for most navigation applications in urban environments.

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27

Cahyadi, Mokhamad Nur, and Irene Rwabudandi. "Integration of GNSS-IMU for increasing the observation accuracy in Condensed Areas (Infrastructure and Forest Canopies)." E3S Web of Conferences 94 (2019): 03015. http://dx.doi.org/10.1051/e3sconf/20199403015.

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Position determination using satellite navigation system has grown significantly. It provides geospatial with global coverage called GNSS (Global Navigation System Satellite). GNSS satellites consists of GLONASS, GPS (Global positioning system) and Galileo.GPS is the most commonly used system and it is known to its capability to determine 3D position on the surface of the earth. In order to determine the position, a GPS receiver must be able to receive signals from at least four GPS satellites. However, the determination of position in condensed areas such as tunnels, area surrounded by high rise buildings, highly forested and in other closely-knit areas is not achieved because satellite signals cannot reach the receiver in the above-mentioned areas and also others where the signals are reflected before being received by a GPS receiver. In this paper, we present the algorithm to fuse GPS and the inertial measurement unit (IMU) to enable positioning in the above-mentioned Condensed Areas. The standard deviations of the two measurements show that GPS-IMU is better than GPS alone, the standard deviation when satellite outages occurred is - 4.57475 for GPS-IMU measurements and 0.218675 for GPS observations. We presented the results in graphics and it shows that GPS measurements are easily disturbed by external influence such as multipath but GPS-IMU graphic is continuous and robust. The advantages and disadvantages of GPS and INS are complementary and make them work together to enable the accurate measurements in the areas mentioned above. Integration of INS and GNSS can be classified into three types, loosely coupled Kalman filter, tightly coupled Kalman filters and ultratight coupled Kalman filter. In this research we used loosely coupled Kalman filter and tightly coupled Kalman filters to combine GPS and INS in one system.

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28

Banachowicz, Andrzej, and Adam Wolski. "Sequential integration of measurements of navigational position parameters." Geodesy and Cartography 59, no. 1 (January 1, 2010): 29–38. http://dx.doi.org/10.2478/v10277-012-0008-7.

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Sequential integration of measurements of navigational position parametersThe sequential method of integrating navigational parameters obtained from non-simultaneous navigational measurements is presented. The proposed algorithm of position coordinates estimation is general and includes two modes of data processing - from simultaneous and non-simultaneous measurements. It can be used in hybrid receivers of radionavigation systems integrating non-homogeneous position lines or in integrated navigation systems, particularly in receivers combining the measurements of various satellite navigation systems.

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29

Rajaby, Ramesh, Yi Zhou, Yifan Meng, Xi Zeng, Guoliang Li, Peng Wu, and Wing-Kin Sung. "SurVirus: a repeat-aware virus integration caller." Nucleic Acids Research 49, no. 6 (January 14, 2021): e33-e33. http://dx.doi.org/10.1093/nar/gkaa1237.

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Abstract A significant portion of human cancers are due to viruses integrating into human genomes. Therefore, accurately predicting virus integrations can help uncover the mechanisms that lead to many devastating diseases. Virus integrations can be called by analysing second generation high-throughput sequencing datasets. Unfortunately, existing methods fail to report a significant portion of integrations, while predicting a large number of false positives. We observe that the inaccuracy is caused by incorrect alignment of reads in repetitive regions. False alignments create false positives, while missing alignments create false negatives. This paper proposes SurVirus, an improved virus integration caller that corrects the alignment of reads which are crucial for the discovery of integrations. We use publicly available datasets to show that existing methods predict hundreds of thousands of false positives; SurVirus, on the other hand, is significantly more precise while it also detects many novel integrations previously missed by other tools, most of which are in repetitive regions. We validate a subset of these novel integrations, and find that the majority are correct. Using SurVirus, we find that HPV and HBV integrations are enriched in LINE and Satellite regions which had been overlooked, as well as discover recurrent HBV and HPV breakpoints in human genome-virus fusion transcripts.

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30

Dobrynin, D. V., V. V. Rozhnov, A. A. Saveliev, O. V. Sukhova, and A. A. Yachmennikova. "Integration of Satellite Tracking Data and Satellite Images for Detailed Characteristics of Wildlife Habitats." Izvestiya, Atmospheric and Oceanic Physics 53, no. 9 (December 2017): 1060–71. http://dx.doi.org/10.1134/s0001433817090080.

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31

Filho, Edemar Morsch, Laio Oriel Seman, Cezar Antônio Rigo, Vicente de Paulo Nicolau, Raúl García Ovejero, and Valderi Reis Quietinho Leithardt. "Irradiation Flux Modelling for Thermal–Electrical Simulation of CubeSats: Orbit, Attitude and Radiation Integration." Energies 13, no. 24 (December 18, 2020): 6691. http://dx.doi.org/10.3390/en13246691.

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During satellite development, engineers need to simulate and understand the satellite’s behavior in orbit and minimize failures or inadequate satellite operation. In this sense, one crucial assessment is the irradiance field, which impacts, for example, the power generation through the photovoltaic cells, as well as rules the satellite’s thermal conditions. This good practice is also valid for CubeSat projects. This paper presents a numerical tool to explore typical irradiation scenarios for CubeSat missions by combining state-of-the-art models. Such a tool can provide the input estimation for software and hardware in the loop analysis for a given initial condition and predict it along with the satellite’s lifespan. Three main models will be considered to estimate the irradiation flux over a CubeSat, namely an orbit, an attitude, and a radiation source model, including solar, albedo, and infrared emitted by the Earth. A case study illustrating the tool’s abilities is presented for a typical CubeSats’ two-line element set (TLE) and five attitudes. Finally, a possible application of the tool as an input to a CubeSat task-scheduling is introduced. The results show that the complete model’s use has considerable differences from the simplified models sometimes used in the literature.

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32

Ajmar, Andrea, Alessandro Annunziato, Piero Boccardo, Fabio Giulio Tonolo, and Annett Wania. "Tsunami Modeling and Satellite-Based Emergency Mapping: Workflow Integration Opportunities." Geosciences 9, no. 7 (July 16, 2019): 314. http://dx.doi.org/10.3390/geosciences9070314.

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Satellite-based Emergency Mapping (SEM) mechanisms provide information for emergency response in relation to different types of disasters, including tsunamis, based on the analysis of satellite imagery acquired in the aftermath of an event. One of the main critical aspects of a SEM service is the timeliness in providing relevant information in the hours following the event. The availability of a relevant post-event image is crucial; therefore, satellite sensors need to be programmed as soon as possible. The integration of a tsunami alerting system, like the one offered by the Global Disaster Alert and Coordination System (GDACS), can be highly beneficial in a SEM mechanism for streamlining and accelerating the satellite programming task and for generating first damage estimates. The GDACS tsunami model is validated using tidal gauge data and a post-event field survey. Tsunami model outputs are then exploited to automatically identify areas of interest to be used for immediate satellite acquisition triggering. Three alternative operational integration approaches are proposed, described and discussed, taking as use case the tsunami that struck the central Chilean coast after the 8.3 magnitude earthquake on 16 September 2015.

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Williams, Wes, Wayne Fox, Lu Christie, Jacque Thousand, Michael Conn-Powers, Larry Carmichael, R. Timm Vogelsberg, and Marc Hull. "Community Integration in Vermont." Journal of the Association for Persons with Severe Handicaps 11, no. 4 (December 1986): 294–99. http://dx.doi.org/10.1177/154079698601100410.

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The Center for Developmental Disabilities, a University Affiliated Facility Satellite, at the University of Vermont, has had a major role in facilitating community integration throughout the state. This article describes the development and implementation of a statewide interdisciplinary model for providing special education to learners with severe disabilities and the Center's role in facilitating systems change in early special education, recreation/leisure opportunities, vocational services, and family support.

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34

Gao, Zhouzheng, You Li, Yuan Zhuang, Honglei Yang, Yuanjin Pan, and Hongping Zhang. "Robust Kalman Filter Aided GEO/IGSO/GPS Raw-PPP/INS Tight Integration." Sensors 19, no. 2 (January 21, 2019): 417. http://dx.doi.org/10.3390/s19020417.

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Reliable and continuous navigation solutions are essential for high-accuracy location-based services. Currently, the real-time kinematic (RTK) based Global Positioning System (GPS) is widely utilized to satisfy such requirements. However, RTK’s accuracy and continuity are limited by the insufficient number of the visible satellites and the increasing length of base-lines between reference-stations and rovers. Recently, benefiting from the development of precise point positioning (PPP) and BeiDou satellite navigation systems (BDS), the issues existing in GPS RTK can be mitigated by using GPS and BDS together. However, the visible satellite number of GPS + BDS may decrease in dynamic environments. Therefore, the inertial navigation system (INS) is adopted to bridge GPS + BDS PPP solutions during signal outage periods. Meanwhile, because the quality of BDS geosynchronous Earth orbit (GEO) satellites is much lower than that of inclined geo-synchronous orbit (IGSO) satellites, the predicted observation residual based robust extended Kalman filter (R-EKF) is adopted to adjust the weight of GEO and IGSO data. In this paper, the mathematical model of the R-EKF aided GEO/IGSO/GPS PPP/INS tight integration, which uses the raw observations of GPS + BDS, is presented. Then, the influences of GEO, IGSO, INS, and R-EKF on PPP are evaluated by processing land-borne vehicle data. Results indicate that (1) both GEO and IGSO can provide accuracy improvement on GPS PPP; however, the contribution of IGSO is much more visible than that of GEO; (2) PPP’s accuracy and stability can be further improved by using INS; (3) the R-EKF is helpful to adjust the weight of GEO and IGSO in the GEO/IGSO/GPS PPP/INS tight integration and provide significantly higher positioning accuracy.

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35

Abraham, Ingo, Wolfgang Hasse, and Martin Plato. "Numerical Modelling of Satellite Downlink Signals in a Finslerian-Perturbed Schwarzschild Spacetime." Universe 6, no. 4 (April 20, 2020): 57. http://dx.doi.org/10.3390/universe6040057.

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The work presented in this paper aims to contribute to the problem of testing Finsler gravity theories by means of experiments and observations in the solar system. Within a class of spherically symmetric static Finsler spacetimes we consider a satellite with an on-board atomic clock, orbiting in the Finslerian-perturbed gravitational field of the earth, whose time signal is transmitted to a ground station, where its receive time and frequency are measured with respect to another atomic clock. This configuration is realized by the Galileo 5 and 6 satellites that have gone astray and are now on non-circular orbits. Our method consists in the numerical integration of the satellite’s orbit, followed by an iterative procedure which provides the numerically integrated signals, i.e., null geodesics, from the satellite to the ground station. One of our main findings is that for orbits that are considerably more eccentric than the Galileo 5 and 6 satellite orbits, Finslerian effects can be separated from effects of perturbations of the Schwarzschild spacetime within the Lorentzian geometry. We also discuss the separation from effects of non-gravitational perturbations. This leads us to the conclusion that observations of this kind combined with appropriate numerical modelling can provide suitable tests of Finslerian modifications of general relativity.

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Zulkifli, et al. "Alignment measurement technique for satellite assembly, integration, and test." International Journal of ADVANCED AND APPLIED SCIENCES 4, no. 9 (September 2017): 119–24. http://dx.doi.org/10.21833/ijaas.2017.09.016.

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Hadjifotinou, K. G. "Numerical integration of the variational equations of satellite orbits." Planetary and Space Science 50, no. 4 (April 2002): 361–69. http://dx.doi.org/10.1016/s0032-0633(02)00008-9.

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YAMAWAKI, Koji. "Integration of Satellite Navigation Algorithm and It's Applicative Effects." Journal of the Japan Society for Aeronautical and Space Sciences 41, no. 475 (1993): 472–81. http://dx.doi.org/10.2322/jjsass1969.41.472.

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RAJBHNADARI, Ashik, Masahiko NAGAI, Masafumi ONO, and Ryosuke SHIBASAKI. "Integration of Disaster Information with Satellite Imagery Using Ontology." TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES, AEROSPACE TECHNOLOGY JAPAN 12, ists29 (2014): Pt_1—Pt_6. http://dx.doi.org/10.2322/tastj.12.pt_1.

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Pellet, Victor, Filipe Aires, Annarita Mariotti, and Diego Fernández-Prieto. "Analyzing the Mediterranean Water Cycle Via Satellite Data Integration." Pure and Applied Geophysics 175, no. 11 (June 13, 2018): 3909–37. http://dx.doi.org/10.1007/s00024-018-1912-z.

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Birkenheuer, Daniel L. "Integration of satellite data with other data for nowcasting." Advances in Space Research 7, no. 11 (January 1987): 363–73. http://dx.doi.org/10.1016/0273-1177(87)90343-7.

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Sieglin, B., W. Treutterer, and L. Giannone. "DCS satellite: Enhanced plant system integration on ASDEX Upgrade." Fusion Engineering and Design 146 (September 2019): 1737–40. http://dx.doi.org/10.1016/j.fusengdes.2019.03.028.

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Xu, Zhi-Zheng, Chong-Quan Zhong, and Hong-Fei Teng. "Assignment and layout integration optimization for simplified satellite re-entry module component layout." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 12 (April 19, 2017): 4287–301. http://dx.doi.org/10.1177/0954410017704220.

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Previous studies of satellite module component (equipment) layout optimization usually initialized a component assignment in the initialization stage, which kept constant in following optimization process. The invariable component assignment will restrict the further improvement in layout optimization. To overcome this deficiency, an assignment and layout integration optimization method is presented for multi-module or supporting surface satellite module component layout design. The assignment and layout integration optimization model and the component reassignment model are built. The component reassignment model is solved by algorithms with new heuristic rule, and the integration optimization model itself is solved by evolutionary algorithm. The purpose of this article is to improve the computational performance of algorithms for multi-module or supporting surface satellite module component layout optimization. The proposed method is applied to a simplified satellite re-entry module component layout optimization problem to illustrate its effectiveness.

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Cox, M. E. "SATCOM/ADS: The Key to CNS Integration for ATM in Europe?" Journal of Navigation 48, no. 3 (September 1995): 361–73. http://dx.doi.org/10.1017/s037346330001287x.

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The availability of an aeronautical mobile satellite service and the emergence of a global navigation satellite system should enable CNS services to be established for civil aviation, virtually worldwide. This paper discusses how the development of a low-cost ADS system, employing these satellite services, might be used to the advantage of European air traffic management (ATM). It indicates that the earlier action is taken, the greater will be the potential benefits. This paper is an updated version of that presented at the NAV94 Conference in November 1994.

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Strachan, Victor F. "Inertial Measurement Technology in the Satellite Navigation Environment." Journal of Navigation 53, no. 2 (May 2000): 247–60. http://dx.doi.org/10.1017/s0373463300008808.

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Inertial measurement technology can make a valuable contribution to the development of autonomous, sole-means Satellite Navigation Systems. The integration of inertial measurement technology and GPS can enable a significant performance improvement to the various configurations of GPS, WAAS and LAAS. This paper provides a conceptual discussion of the safety and performance benefits that inertial measurement and integration technology can bring to the satellite navigation environment.

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de Cola, Tomaso, Mario Marchese, and Maurizio Mongelli. "Evolution of satellite communications: Integration of ETSI BSM and DVB-RCS for future satellite terminals." International Journal of Satellite Communications and Networking 34, no. 2 (April 1, 2015): 131–54. http://dx.doi.org/10.1002/sat.1104.

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Kamei, Lawrence. "Construction and Activation of Rockwell International's Acoustic Test Chamber." Journal of the IEST 30, no. 1 (January 1, 1987): 25–30. http://dx.doi.org/10.17764/jiet.1.30.1.p0257q1v12213257.

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Rockwell International's Satellite Systems Division in Seal Beach recently completed a plant modernization program to support the mass production of 28 satellites. The modernization program consisted of multiple satellite integration and test stations and environmental test facilities, which included a high intensity acoustic test chamber, contained within a 4,645 m2 (50,000 ft2) cleanroom. This paper discusses the design philosophy, construction, integration, and activation of the high intensity acoustic test chamber for production acceptance testing of satellites. The 906m3 (32,000 ft3) acoustic test cell consists of a steel reinforced concrete chamber with six electropneumatic noise generators. One of the innovative features of the chamber is a unique quarter hom assembly that acoustically couples the noise generators to the chamber. Design concepts, model testing, and evaluation results are presented in the paper. Considerations such as nitrogen versus compressed air source, digital closed loop spectrum control versus manual equalizers, and microprocessor based interlock systems are included in the discussion. Construction difficulties, anomalies encountered, and their resolution are also discussed. Results of the readiness demonstration testing are highlighted, and the paper concludes with illustrations and discussion of the first series of tests performed in the test cell.

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Zhou, Jian, and Xing Cun Wu. "The Collocation Method's Application on Low Earth Orbit Satellite Orbit Integration." Applied Mechanics and Materials 644-650 (September 2014): 4435–38. http://dx.doi.org/10.4028/www.scientific.net/amm.644-650.4435.

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This paper starts with the principle and operation approaches of Collocation orbit integration method, analyzing the integration process and initialization value of motion equation and variation equation. Through different integration lengths and polynomial degrees, this paper discussed the impact to orbit precision. It also compares the results to the scientific orbit which were offered by GFZ, through the analysis of this method; we also find the appropriate integration length and polynomial degree and validate the validity of this method.

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Rahmat, Ali, Mustofa Abi Hamid, Muhammad Khoiru Zaki, and Abdul Mutolib. "Normalized Difference Vegetation Index in the Integration of Conservation Education." Indonesian Journal of Science and Technology 3, no. 1 (April 10, 2018): 47. http://dx.doi.org/10.17509/ijost.v3i1.10798.

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Forest plays an important role to support a global environment. Currently, forest degradation occurs in developing countries. Therefore, the excellent strategies to against the forest degradation must be found. One of the best solutions is understanding the information of vegetation condition. Here, the objective of this paper was to apply a method as the assessment of vegetation monitoring using satellite data in the integration of conservation education forest at great forest Wan Abdul Rachman in Lampung Province, Indonesia. In this study, normalized difference vegetation index (NDVI) was used, completed with satellite data (namely MODIS). This technique helps in monitoring vegetation status. Data NDVI from MODIS satellite data showed that forest area decrease very small from 2000-2017. The data was obtained for June, July, and the end of September.

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Journal, Baghdad Science. "Study the Effect of Solar Radiation Pressure at Several Satellite Orbits." Baghdad Science Journal 10, no. 4 (December 1, 2013): 1253–61. http://dx.doi.org/10.21123/bsj.10.4.1253-1261.

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The effects of solar radiation pressure at several satellite (near Earth orbit satellite, low Earth orbit satellite, medium Earth orbit satellite and high Earth orbit satellite ) have been investigated. Computer simulation of the equation of motion with perturbations using step-by-step integration (Cowell's method) designed by matlab a 7.4 where using Jacobian matrix method to increase the accuracy of result.

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