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Journal articles on the topic 'Satellite GEO'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Vahid oğlu Nasiyev, Müslim. "Research and application of satellite communication networks as an alternative to modern communication systems." SCIENTIFIC WORK 68, no. 07 (2021): 78–83. http://dx.doi.org/10.36719/2663-4619/68/78-83.

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Research work has been devoted to show how satellite technology can meet a variety of human needs and the ultimate measure of its effectiveness. Communication satellites, whether in geostationary Earth orbit (GEO) or non GEO, provide an effective platform to relay radio signals between points on the ground. The users who employ these signals enjoy a broad spectrum of telecommunication services on the ground, at sea, and in the air. In recent years, such systems have become practical to the point where a typical household can have its own satellite dish. That dish can receive a broad range of t

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Ye, Shirong, Yongwei Yan, and Dezhong Chen. "Performance Analysis of Velocity Estimation with BDS." Journal of Navigation 70, no. 3 (2017): 580–94. http://dx.doi.org/10.1017/s0373463316000813.

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The regional part of the current BeiDou navigation satellite system (BDS) consists of five Geostationary Earth Orbit (GEO) satellites, five Inclined Geosynchronous Satellite Orbit (IGSO) satellites and four Medium Earth Orbit (MEO) satellites. We examined three algorithms for BDS velocity estimation. In addition, the performance of velocity estimation using different BDS satellite combinations was analysed. Static tests demonstrated that velocity precision using Raw Doppler (RD) measurements was of the order of centimetres per second, whereas the carrier-phase-Derived Doppler (DD) measurements

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Song, Weiwei, Qiong Wu, Xiaopeng Gong, Fu Zheng, and Yidong Lou. "Corrections of BDS Code Multipath Error in Geostationary Orbit Satellite and Their Application in Precise Data Processing." Sensors 19, no. 12 (2019): 2737. http://dx.doi.org/10.3390/s19122737.

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Multipath error is a main error source in Global Navigation Satellite System (GNSS) data processing, which cannot be removed by a differential technique because of the strong relationship with the environment around the station. The multipath effect of the code observables is more complex than that of the carrier-phase observables, especially for BeiDou Navigation Satellite System (BDS) geostationary orbit (GEO) satellites. In this contribution, we deeply analyzed the characteristic and effect on the precise data processing of GEO satellite multipath errors based on a large number of permanent

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Zhang, Jiao Yan, Jun Yan Wang, Wei He, Hong Lan Bu, and Yan Zhang. "The Analysis of Abnormal Phenomena of GEO Satellites Solar Array." Advanced Materials Research 823 (October 2013): 559–62. http://dx.doi.org/10.4028/www.scientific.net/amr.823.559.

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Satellites solar array provides sustainable and reliable energy for satellite by changing the solar energy into electrical energy in order to ensure the normal working of the satellite. The working status of solar array is directly related to the satellites normal running in orbit. The thesis summarized the normal trend of the GEO satellites solar array output power, through comparing the real output power of a certain satellites solar array with the normal trend, and detected four abnormal phenomena of solar array output power. Then the thesis analyzed the reasons, and made related suggestion

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Ouyang, Chenhao, Junbo Shi, Yuru Shen, and Lihong Li. "Six-Year BDS-2 Broadcast Navigation Message Analysis from 2013 to 2018: Availability, Anomaly, and SIS UREs Assessment." Sensors 19, no. 12 (2019): 2767. http://dx.doi.org/10.3390/s19122767.

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The second-generation of the Beidou Navigation Satellite System (BDS-2) has been officially providing positioning, navigation, and timing (PNT) services within the Asia–Pacific region for six years, starting from 2013. A comprehensive analysis of BDS-2 satellite broadcast navigation message performance during the past six years is highly demanded, not only for the regional service but also for the global service announced in December 2018. Therefore, this study focuses on the performance assessment of six-year BDS-2 broadcast navigation messages from 2013 to 2018 in three aspects: Message avai

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Chen, Yongqian, Songhua Yan, and Jianya Gong. "Deformation Estimation Using Beidou GEO-Satellite-Based Reflectometry." Remote Sensing 13, no. 16 (2021): 3285. http://dx.doi.org/10.3390/rs13163285.

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Deformation monitoring has been brought to the fore and extensively studied in recent years. Global Navigation Satellite System Reflectometry (GNSS-R) techniques have so far been developed in deformation estimation applications, which however, are subject to the influence of mobile satellites. Rather than compensating for the path delay variations caused by mobile satellites, adopting Beidou geostationary Earth orbit (GEO) satellites as transmitters directly eliminates the satellite-motion-induced phase error and thus provides access to stable phase information. This paper presents a novel def

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Jiang, Weiping, Wen Zhao, Hua Chen, Xuexi Liu, Xiangdong An, and Qusen Chen. "Analysis of BDS Fractional Cycle Biases and PPP Ambiguity Resolution." Sensors 19, no. 21 (2019): 4725. http://dx.doi.org/10.3390/s19214725.

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It is difficult to enable traditional precise point positioning (PPP) with ambiguity resolution (AR) due to fractional cycle biases (FCBs), which limit the accuracy and reliability of positioning results. The BeiDou Navigation Satellite System (BDS) has been providing continuous positioning, navigation, and timing (PNT) services in the global region since the end of 2018. The BDS constellation includes geostationary earth orbit (GEO), inclined geostationary orbit (IGSO), and medium earth orbit (MEO) satellites. However, its hybrid constellation structure and the satellite-side multipath effect

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Wang, Dong Hui, Wen Xiang Liu, and Shao Wei Yong. "Optimal Design of Regional Power-Enhancing Based on Mixed Navigation Constellation." Applied Mechanics and Materials 336-338 (July 2013): 1092–98. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1092.

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In navigation war, satellite signals need to be power-enhanced to improve anti-jamming performance, especially in some important areas. A navigation constellation structure is proposed for optimal regional power-enhancing performance. In the structure, GEO and IGSO are adopted to be the basic power-enhanced satellite, all the GEO and IGSO satellite antenna beams are turned to point to the power-enhanced target areas center while power-enhancing. MEO satellites are adopted as complementation to improve satellite coverage performance in power-enhanced area. The design principle is to let the sat

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Stojce Ilcev, Dimov. "Network architecture of internet backhaul by DVB-RCS standards for shipborne and other mobile applications." International Journal of Engineering & Technology 9, no. 3 (2020): 830. http://dx.doi.org/10.14419/ijet.v9i3.31087.

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In this paper is introduced a new Digital Video Broadcasting-Return Channel via Satellite (DVB-RCS) for the implementation of modern satellite Internet for shipborne, Vehicleborne and airborne mobile applications via Geostationary Erath Orbit (GEO) satellites. Mobile Satellite Internet aims at providing the next generation satellite broadcasting service through C, Ku and Ka-band DVB-S2 standard for Mobile Earth Stations (MES) via GEO satellite and Land Earth Stations (LES) to the ground or other mobile subscribers. It is de facto a mobile interactive broadcast satellite access system, which pr

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Huang, Feijiang, Xiaochun Lu, Guangcan Liu, Liping Sun, Wang Sheng, and Yingde Wang. "Improvement and Simulation of an Autonomous Time Synchronization Algorithm for a Layered Satellite Constellation." Mathematical Problems in Engineering 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/136301.

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Autonomous time synchronization for satellite constellations is a key technology to establish a constellation system time without the use of a ground station. The characteristics of satellite visibility time for layered satellite constellations containing geostationary earth orbit (GEO), inclined geosynchronous orbit (IGSO), and medium earth orbit (MEO) satellites are simulated by establishing a visible satellite model. Based on the satellite visible simulation results for a layered constellation, this study investigates the autonomous time synchronization algorithm that corresponds to the lay

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Lee, Byoung-Sun, and Kyu-Hong Choi. "Collocation of two GEO satellites and one inclined GSO satellite." Aerospace Science and Technology 4, no. 7 (2000): 507–15. http://dx.doi.org/10.1016/s1270-9638(00)01076-2.

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Jin, S. G., R. Jin, and D. Li. "Assessment of BeiDou differential code bias variations from multi-GNSS network observations." Annales Geophysicae 34, no. 2 (2016): 259–69. http://dx.doi.org/10.5194/angeo-34-259-2016.

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Abstract. The differential code bias (DCB) of global navigation satellite systems (GNSSs) affects precise ionospheric modeling and applications. In this paper, daily DCBs of the BeiDou Navigation Satellite System (BDS) are estimated and investigated from 2-year multi-GNSS network observations (2013–2014) based on global ionospheric maps (GIMs) from the Center for Orbit Determination in Europe (CODE), which are compared with Global Positioning System (GPS) results. The DCB of BDS satellites is a little less stable than GPS solutions, especially for geostationary Earth orbit (GEO) satellites. Th

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Qin, Zhiwei, Guanwen Huang, Qin Zhang, et al. "A Method to Determine BeiDou GEO/IGSO Orbital Maneuver Time Periods." Sensors 19, no. 12 (2019): 2675. http://dx.doi.org/10.3390/s19122675.

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Because there are different types of BeiDou constellations with participating geostationary orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites, the maneuvering frequency of BeiDou satellites is higher than that of other navigation systems. The satellite orbital maneuvers lead to orbital parameter failure for several hours from broadcast ephemeris. Due to the missing initial orbit, the maneuvering thrust, and the period of orbital maneuvering, the orbit products of maneuvering satellites cannot be provided by the International Global Navigation Satellite System (GNSS) Service (IGS)

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Krischke, M., W. Niemeyer, and S. Scherer. "RapidEye satellite based geo-information system." Acta Astronautica 46, no. 2-6 (2000): 307–12. http://dx.doi.org/10.1016/s0094-5765(99)00219-2.

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15

Lee, Jonghyuk, Dong-Bin Shin, Chu-Yong Chung, and JaeGwan Kim. "A Cloud Top-Height Retrieval Algorithm Using Simultaneous Observations from the Himawari-8 and FY-2E Satellites." Remote Sensing 12, no. 12 (2020): 1953. http://dx.doi.org/10.3390/rs12121953.

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In this paper, we introduce a cloud top-height (CTH) retrieval algorithm using simultaneous observations from the Himawari-8 and FengYun (FY)-2E geostationary (GEO) satellites (hereafter, dual-GEO CTH algorithm). The dual-GEO CTH algorithm estimates CTH based on the parallax, which is the difference in the apparent position of clouds observed from two GEO satellites simultaneously. The dual-GEO CTH algorithm consists of four major procedures: (1) image remapping, (2) image matching, (3) CTH calculation, and (4) quality control. The retrieved CTHs were compared with other satellite CTHs from th

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Zhao, Rui Bin, Bo Shao, Rui Li, and Zhi Gang Huang. "A Satellite Ephemeris Correction Calculating Algorithm Based on the Hill Differential Equation." Applied Mechanics and Materials 336-338 (July 2013): 1682–87. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1682.

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The Hill differential equation is used to describe the change characteristic of the ephemeris prediction error in order to calculate the satellite broadcast ephemeris error and the error change rate. After the ECEF coordinate system converses the satellite inertial coordinate system, both the satellite ephemeris correction and the correction accuracy can be calculated by the Kalman filter. When the GEO, IGSO and MEO satellites move over the China, the calculation algorithms based on the weighted least square, the velocity model of the Kalman filter and the Hill differential equation are compar

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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 (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 an

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Wang, Chuang, Dongming Bian, Gengxin Zhang, Jian Cheng, and Yongqiang Li. "A Novel Dynamic Spectrum-Sharing Method for Integrated Wireless Multimedia Sensors and Cognitive Satellite Networks." Sensors 18, no. 11 (2018): 3904. http://dx.doi.org/10.3390/s18113904.

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With the growing demand, Wireless Multimedia Sensor Networks (WMSNs) play an increasingly important role, which enhances the capacity of typical Wireless Sensor Networks (WSNs). Additionally, integrating satellite systems into WMSNs brings about the beneficial synergy, especially in rural and sparsely populated areas. However, the available spectrum resource is scarce, which contradicts the high-speed content required for multimedia. Cognitive radio is a promising solution to address the conflict. In this context, we propose a novel spectrum-sharing method for the integrated wireless multimedi

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Savastano, Giorgio, Attila Komjathy, Esayas Shume, et al. "Advantages of Geostationary Satellites for Ionospheric Anomaly Studies: Ionospheric Plasma Depletion Following a Rocket Launch." Remote Sensing 11, no. 14 (2019): 1734. http://dx.doi.org/10.3390/rs11141734.

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In this study, we analyzed signals transmitted by the U.S. Wide Area Augmentation System (WAAS) geostationary (GEO) satellites using the Variometric Approach for Real-Time Ionosphere Observation (VARION) algorithm in a simulated real-time scenario, to characterize the ionospheric response to the 24 August 2017 Falcon 9 rocket launch from Vandenberg Air Force Base in California. VARION is a real-time Global Navigation Satellites Systems (GNSS)-based algorithm that can be used to detect various ionospheric disturbances associated with natural hazards, such as tsunamis and earthquakes. A noise re

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Barbara, Nicholas H., Stéphanie Lizy-Destrez, Paolo Guardabasso, and Didier Alary. "New GEO paradigm: Re-purposing satellite components from the GEO graveyard." Acta Astronautica 173 (August 2020): 155–63. http://dx.doi.org/10.1016/j.actaastro.2020.03.041.

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Lotfy, A., W. Anis, and Joseph V. M. Halim. "Design PV system for a small GEO satellite and studying the effect of using different types of propulsion." International Journal of Advances in Applied Sciences 8, no. 1 (2019): 54. http://dx.doi.org/10.11591/ijaas.v8.i1.pp54-63.

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<p>This paper presents an optimum design of the solar Photo-Voltaic (PV) power system for small Geostationary Earth Orbit (GEO) satellites using triple junction solar cells and advanced Lithium Ion batteries. The paper applies the proposed system on various propulsion technologies; full chemical, full electrical and hybrid propulsions. This research work studies the capability to fulfil efficiently all the satellite power requirements during both the launching and the on-station phases while reducing the high cost challenge. Since the propulsion type is a key factor for the satellite cos

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Vydrin, Nikita K. "STUDY OF PROCESSING METHODS OF GEO-SPATIAL DATA TO MANAGE SUSTAINABLE DEVELOPMENT OF TERRITORIES." Interexpo GEO-Siberia 6, no. 1 (2020): 87–90. http://dx.doi.org/10.33764/2618-981x-2020-6-1-87-90.

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The article discusses the technique for processing satellite images by PlanetScope satellites, implemented as a Planet Analytics Feeds web service. Basic characteristics of the survey equipment of these satellite systems and key steps of automated processing are considered. The obtained information can be used to study and analyze sustainable development of territories, as well as making managerial decisions.

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García-Pereda, Javier, José Fernández-Serdán, Óscar Alonso, et al. "NWCSAF High Resolution Winds (NWC/GEO-HRW) Stand-Alone Software for Calculation of Atmospheric Motion Vectors and Trajectories." Remote Sensing 11, no. 17 (2019): 2032. http://dx.doi.org/10.3390/rs11172032.

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The High Resolution Winds (NWC/GEO-HRW) software is developed by the EUMETSAT Satellite Application Facility on Support to Nowcasting and Very Short Range Forecasting (NWCSAF). It is part of a stand-alone software package for the calculation of meteorological products with geostationary satellite data (NWC/GEO). NWCSAF High Resolution Winds provides a detailed calculation of Atmospheric Motion Vectors (AMVs) and Trajectories, locally and in near real time, using as input geostationary satellite image data, NWP model data, and OSTIA sea surface temperature data. The whole NWC/GEO software packa

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Oh, Hyungjik, Eunseo Park, Hyung-Chul Lim, and Chandeok Park. "Orbit Determination of Korean GEO Satellite Using Single SLR Sensor." Sensors 18, no. 9 (2018): 2847. http://dx.doi.org/10.3390/s18092847.

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Geostationary Earth Orbit (GEO)-Korea Multi-Purpose Satellite (KOMPSAT)-2B (GK-2B) is a Korean geostationary Earth orbit (GEO) satellite that is scheduled to be launched in 2020 for meteorological and ocean monitoring. While the primary orbit determination (OD) for GK-2B is by ground-based radar observations and the expected orbit precision is less than 1 km, a satellite laser ranging (SLR) technique has been selected as a subsidiary OD method to verify/complement/enhance primary OD results. In general, the available time and equipment for observing GEO satellites with SLR are limited. Further

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Zhang, Jiao Yan, Gang Weng Han, Wei Bo Zhu, Jing Yong Liu, and Na Kang. "On-Orbit Fault Location Analysis and Solution Strategy of GEO Satellite Solar Array." Advanced Materials Research 986-987 (July 2014): 1536–40. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1536.

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Solar array is the important part of the satellite’s Electrical Power Supply, the failure of the solar array may lead to the loss of some or all of the satellite’s functions, so fault location in time and solution strategy of solar array is particularly important. The thesis studied the on-orbit failure of GEO satellite’s solar array, analyzed the fault location according to the related telemetry, and researched the solution of all kind of the faults. The thesis contributes to the satellite control center to locate faults in time and the satellite manufacture to improve the design of the solar

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Fen, Cao, Yang XuHai, Su MuDan, et al. "Evaluation of C-Band Precise Orbit Determination of Geostationary Earth Orbit Satellites based on the Chinese Area Positioning System." Journal of Navigation 67, no. 2 (2013): 343–51. http://dx.doi.org/10.1017/s0373463313000787.

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Geostationary Earth Orbit (GEO) satellites play a significant role in the space segment of the Chinese Area Navigation System. The C-Band transfer ranging method developed by the National Time Service Center (NTSC) has been widely used in the Chinese Area Positioning System (CAPS), with its advantages of separating satellite ranging from time synchronization and being unaffected by weather. The explicit ranging correction models for the C-Band transfer ranging method are introduced in detail in this article for the first time. Precise Orbit Determination (POD) using C-Band pseudo-range observa

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Xuan, Cheng, Li ZhiGang, Yang XuHai, Wu WenJun, Lei Hui, and Feng ChuGang. "Chinese Area Positioning System With Wide Area Augmentation." Journal of Navigation 65, no. 2 (2012): 339–49. http://dx.doi.org/10.1017/s0373463311000750.

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The Chinese Area Positioning System (CAPS) is a regional satellite navigation system; its space segment consists of some Geostationary Earth Orbit (GEO) satellites and 2∼3 Inclined Geo-Synchronous Orbit (IGSO) satellites. Only a few satellites are needed to provide good area coverage and hence it is an ideal space segment for a regional navigation system. A time transfer mode is used to transmit navigation signals, so no high-precision atomic clocks are required onboard the satellites; all of the transferred navigation signals are generated by the same atomic clock at the master control statio

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Li, Kezhao, Zhiwei Li, Lin Chai, An-min Ding, Jin-ben Wei, and Long Li. "Precise Orbit Determination of BDS MEO Satellites Based on Satellite TT&C Stations." International Journal of Aerospace Engineering 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/7856353.

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A novel method, which is based on the triple-frequency combination and Space-Based Telemetry, Tracking, and Command (STT&C) stations, is proposed in this paper. Considering BeiDou Navigation Satellite System (BDS) Geostationary Orbit (GEO) and Inclined Geostationary Orbit (IGSO) satellites as the STT&C facilities, firstly, we presented the BDS Medium Earth Orbit (MEO) satellites’ precise orbit determination scheme based on triple-frequency combination. Then, we gave the sufficient and necessary conditions about the visibility and the coverage rate calculation model of STT&C to BDS

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Kim, Jhoon, Ukkyo Jeong, Myoung-Hwan Ahn, et al. "New Era of Air Quality Monitoring from Space: Geostationary Environment Monitoring Spectrometer (GEMS)." Bulletin of the American Meteorological Society 101, no. 1 (2019): E1—E22. http://dx.doi.org/10.1175/bams-d-18-0013.1.

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Abstract The Geostationary Environment Monitoring Spectrometer (GEMS) is scheduled for launch in February 2020 to monitor air quality (AQ) at an unprecedented spatial and temporal resolution from a geostationary Earth orbit (GEO) for the first time. With the development of UV–visible spectrometers at sub-nm spectral resolution and sophisticated retrieval algorithms, estimates of the column amounts of atmospheric pollutants (O3, NO2, SO2, HCHO, CHOCHO, and aerosols) can be obtained. To date, all the UV–visible satellite missions monitoring air quality have been in low Earth orbit (LEO), allowin

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Chang, Wen-Yen, Chih-Tien Wang, Chih-Yuan Chu, and Jyun-Ru Kao. "Mapping Geo-Hazard by Satellite Radar Interferometry." Proceedings of the IEEE 100, no. 10 (2012): 2835–50. http://dx.doi.org/10.1109/jproc.2012.2194629.

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Kasonsuwan, K., S. Wannawichian, and T. Kirdkao. "Observation of GEO Satellite Above Thailand’s Sky." Journal of Physics: Conference Series 901 (September 2017): 012009. http://dx.doi.org/10.1088/1742-6596/901/1/012009.

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Hu, Sixing, and Gim Hee Lee. "Image-Based Geo-Localization Using Satellite Imagery." International Journal of Computer Vision 128, no. 5 (2019): 1205–19. http://dx.doi.org/10.1007/s11263-019-01186-0.

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Matricciani, Emilio. "Geocentric Spherical Surfaces Emulating the Geostationary Orbit at Any Latitude with Zenith Links." Future Internet 12, no. 1 (2020): 16. http://dx.doi.org/10.3390/fi12010016.

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According to altitude, the orbits of satellites constellations can be divided into geostationary Earth orbit (GEO), medium Earth orbit (MEO), and low Earth orbit (LEO) constellations. We propose to use a Walker star constellation with polar orbits, at any altitude, to emulate the geostationary orbit with zenith paths at any latitude. Any transmitter/receiver will be linked to a satellite as if the site were at the equator and the satellite at the local zenith. This constellation design can have most of the advantages of the current GEO, MEO, and LEO constellations, without having most of their

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Qiao, Jing, Wu Chen, Shengyue Ji, and Duojie Weng. "Accurate and Rapid Broadcast Ephemerides for Beidou-Maneuvered Satellites." Remote Sensing 11, no. 7 (2019): 787. http://dx.doi.org/10.3390/rs11070787.

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The geostationary earth orbit (GEO) and inclined geosynchronous orbit (IGSO) satellites of the Beidou navigation satellite system are maneuvered frequently. The broadcast ephemeris can be interrupted for several hours after the maneuver. The orbit-only signal-in-space ranging errors (SISREs) of broadcast ephemerides available after the interruption are over two times larger than the errors during normal periods. To shorten the interruption period and improve the ephemeris accuracy, we propose a two-step orbit recovery strategy based on a piecewise linear thrust model. The turning points of the

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Jeong, J. "IMAGING GEOMETRY AND POSITIONING ACCURACY OF DUAL SATELLITE STEREO IMAGES: A REVIEW." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences IV-2/W4 (September 13, 2017): 235–42. http://dx.doi.org/10.5194/isprs-annals-iv-2-w4-235-2017.

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Many previous studies have demonstrated the potential applications of stereo pairs obtained from high-resolution satellites for accurate geo-positioning, but it should be noted that they are based on the conventional use of single-satellite stereo images produced by integrating two images taken by the same satellite. Considering the emergence of various types of satellite data and the requirements to combine these data, it is important to investigate dual-satellite stereo images that integrate two images taken by different satellites. This study reviews the image geometry and positioning accur

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Yang, Fan, Hai Bo Yuan, and Shao Wu Dong. "Analysis and Evaluation of One-Way Time Service by Beidou Dual-Frequency Multichannel Receiver." Advanced Materials Research 718-720 (July 2013): 1234–39. http://dx.doi.org/10.4028/www.scientific.net/amr.718-720.1234.

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High precision time plays a key role in technology and economy domain. as the time transmitting carrier, time service restricts timing precision of users. Combined with the characteristics of Beidou navigation system, the paper describes the one-way time service theory, accomplishes Beidou one-way timing algorithm and the software design. Finally, using the satellite data of Beidou dual-frequency multichannel receiver at the National Time Service Center (NTSC), the Chinese Academy of Sciences, the precision of Beidou one-way time service by the different types of satellites-GEO satellites, IGS

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Sathish, P., and N. Alivelu Manga. "Investigation of Doppler Collision Effects in Kinematic Conditions and its Mitigation for NavIC System." Alinteri Journal of Agriculture Sciences 36, no. 1 (2021): 541–49. http://dx.doi.org/10.47059/alinteri/v36i1/ajas21077.

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NavIC (Navigation with Indian Constellation) constellation consists of four geosynchronous and three geostationary satellites and it is developed by ISRO, India. It provides position, velocity and timing services. Doppler Collision (DC) is a phenomenon where tracking errors are introduced in the measurements due to cross-correlation between the satellites. If relative doppler between satellites is less than the code loop bandwidth, then DC occurs. In this paper, to analyze DC impact on NavIC, the Doppler shift of each GEO satellite is calculated, the most effected GEO satellite pair is identif

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Xu Rong, 徐. 融., and 赵. 飞. Zhao Fei. "Spectral scattering inversion method of GEO satellite components." Infrared and Laser Engineering 45, s1 (2016): 123001. http://dx.doi.org/10.3788/irla201645s1.123001.

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CHIPADE, Radhika A., and Thekke Variyam RAMANATHAN. "Extended Kalman filter based statistical orbit determination for geostationary and geosynchronous satellite orbits in BeiDou constellation." Contributions to Geophysics and Geodesy 51, no. 1 (2021): 25–46. http://dx.doi.org/10.31577/congeo.2021.51.1.2.

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BeiDou Navigation Satellite System (BDS) is composed of satellites in geostationary Earth orbit (GEO), medium Earth orbit (MEO) and inclined geosynchronous orbit (IGSO). However, the orbit determination of geostationary Earth orbits and of geosynchronous orbits (GSO) with small inclination angle and small eccentricity is a challenging task that is addressed in this paper using Extended Kalman Filter (EKF). The satellite positions were predicted in Earth-centred inertial (ECI) reference frame when propagated through Keplerian model and perturbation force model for different values of right asce

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Scarino, Benjamin R., Patrick Minnis, Thad Chee, Kristopher M. Bedka, Christopher R. Yost, and Rabindra Palikonda. "Global clear-sky surface skin temperature from multiple satellites using a single-channel algorithm with angular anisotropy corrections." Atmospheric Measurement Techniques 10, no. 1 (2017): 351–71. http://dx.doi.org/10.5194/amt-10-351-2017.

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Abstract. Surface skin temperature (Ts) is an important parameter for characterizing the energy exchange at the ground/water–atmosphere interface. The Satellite ClOud and Radiation Property retrieval System (SatCORPS) employs a single-channel thermal-infrared (TIR) method to retrieve Ts over clear-sky land and ocean surfaces from data taken by geostationary Earth orbit (GEO) and low Earth orbit (LEO) satellite imagers. GEO satellites can provide somewhat continuous estimates of Ts over the diurnal cycle in non-polar regions, while polar Ts retrievals from LEO imagers, such as the Advanced Very

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Tanaka, Toshiki, Takuji Ebinuma, Shinichi Nakasuka, and Heidar Malki. "A Comparative Analysis of Multi-Epoch Double-Differenced Pseudorange Observation and Other Dual-Satellite Lunar Global Navigation Systems." Aerospace 8, no. 7 (2021): 191. http://dx.doi.org/10.3390/aerospace8070191.

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In this study, dual-satellite lunar global navigation systems that consist of a constellation of two navigation satellites providing geo-spatial positioning on the lunar surface were compared. In our previous work, we proposed a new dual-satellite relative-positioning navigation method called multi-epoch double-differenced pseudorange observation (MDPO). While the mathematical model of the MDPO and its behavior under specific conditions were studied, we did not compare its performance with other dual-satellite relative-positioning navigation systems. In this paper, we performed a comparative a

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Huang, Fei Jiang, Xiao Chun Lu, Jun Yang, Qing Xiao Shan, and Yong Bin Zhou. "Study on Aerospace Layering Time Synchronization Architecture and Time Synchronization Algorithm." Advanced Materials Research 546-547 (July 2012): 1614–19. http://dx.doi.org/10.4028/www.scientific.net/amr.546-547.1614.

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The rapid development of various kinds of aerospace application systems requires the appropriate high-accuracy time and frequency standard. This problem can be effectively solved by establishing suitable time and frequency standard in aerospace. Based on the establishment of aerospace satellite visual model, the simulation of satellite visual time on 3-layer constellation structure, including GEO satellite, IGSO satellites and MEO satellites, has been conducted. The visual features of this constellation have been gained. Combining with the major influencing factors of satellite clock correctio

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Franck, Laurent, and Gérard Maral. "Signaling for inter-satellite link routing in broadband non-GEO satellite systems." Computer Networks 39, no. 1 (2002): 79–92. http://dx.doi.org/10.1016/s1389-1286(01)00299-7.

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Wang, Lei, Beizhen Xu, Wenju Fu, et al. "Centimeter-Level Precise Orbit Determination for the Luojia-1A Satellite Using BeiDou Observations." Remote Sensing 12, no. 12 (2020): 2063. http://dx.doi.org/10.3390/rs12122063.

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Luojia-1A is a scientific experimental satellite operated by Wuhan University, which is the first low earth orbiter (LEO) navigation signal augmentation experimental satellite. The precise orbit is the prerequisite of augmenting existing Global Navigation Satellite System (GNSS) performance and improves users’ positioning accuracy. Meanwhile, LEO precise orbit determination (POD) with BeiDou-2 observations is particularly challenging since it only provides regional service. In this study, we investigated the method of precise orbit determination (POD) for Luojia-1A satellite with the onboard B

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Xu, Tian He, Yue Peng Chen, and Qian Xin Wang. "Kalman Filter-Based Orbit Determination with Dynamic Model Compensation for a Maneuvered GEO Satellite." Advanced Materials Research 383-390 (November 2011): 5626–31. http://dx.doi.org/10.4028/www.scientific.net/amr.383-390.5626.

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Orbit determination methods for a geostationary (GEO) satellite are introduced. In order to control or model the thrust force, a Kalman filter based on dynamic model compensation is proposed for the orbit determination of a maneuvered GEO satellite. The main idea is to use a first-order Gauss-Markov process to compensate the unmodeled or inaccurately modeled accelerations caused by orbital maneuver in Kalman filter-based orbit determination. Simulation with Chinese ground tracking network for a maneuvered GEO satellite was conducted to verify the performance of the proposed orbit determination

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CAO, XIAOCHUN, LIN WU, ZEESHAN RASHEED, et al. "AUTOMATIC GEO-REGISTRATION FOR PORT SURVEILLANCE." International Journal of Pattern Recognition and Artificial Intelligence 24, no. 04 (2010): 531–55. http://dx.doi.org/10.1142/s0218001410008093.

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This paper proposes a new solution to geo-register the nearly feature-less maritime video feeds. We detect the horizon using sizable or uniformly moving vessels, and estimate the vertical apex using water reflections of the street lamps. The computed horizon and apex provide a metric rectification that removes the affine distortions and reduces the searching space for geo-registration. Geo-registration is obtained by searching the best orientation where the estimated water masks on satellite images and camera views are matched. The proposed solution has the following contributions: first, wate

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Hu, Yiwen, Zhanyue Zhang, and Hongqiang Sun. "Effect of GEO satellite explosion on space environment." E3S Web of Conferences 131 (2019): 01068. http://dx.doi.org/10.1051/e3sconf/201913101068.

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The distribution status of spatial targets in the geosynchronous orbit (GEO) is analysed, and the GEO orbital space environment model with space debris above 10 cm in feature size is established. The debris situation after the fragmentation of the satellite explosion in the orbit is simulated, and the safety of the space environment under the current conditions is analysed.

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Gusev, I. V., E. V. Dargel, I. P. Langeman, and S. A. Lebedev. "The results of calibrating satellite altimetry measurements from the space geodetic system “GEO-IK-2” in the water area of the Rybinsk reservoir." Geodesy and Cartography 973, no. 7 (2021): 43–55. http://dx.doi.org/10.22389/0016-7126-2021-973-7-43-55.

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The authors present the results of satellite altimetry measurements calibration from the space geodetic system “GEO-IK-2” in the water area of the Rybinsk reservoir, obtained through two independent methods. In the first case, the altimetry measurements were calibrated by comparing the sea surface heights with respect to the reference ellipsoid, which were calculated from radio altimeter measurements, and from the processing of ground GNSS measurements performed at the sub-satellite point at the time of passing the GEO-IK-2 spacecraft. For this, in the summer of 2020, special geodetic measurem

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Bisio, Igor, and Mario Marchese. "Power Saving Bandwidth Allocation over GEO Satellite Networks." IEEE Communications Letters 16, no. 5 (2012): 596–99. http://dx.doi.org/10.1109/lcomm.2012.030912.111913.

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Chung, Sung-Rae, Myoung-Hwan Ahn, Kyung-Soo Han, Kyu-Tae Lee, and Dong-Bin Shin. "Meteorological Products of Geo-KOMPSAT 2A (GK2A) Satellite." Asia-Pacific Journal of Atmospheric Sciences 56, no. 2 (2020): 185. http://dx.doi.org/10.1007/s13143-020-00199-x.

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