Results 11 to 20 of about 318,817 (173)
International Journal of Aerospace Engineering, 2016 The accuracy of autonomous orbit determination of Lagrangian navigation constellation will affect the navigation accuracy for the deep space probes. Because of the special dynamical characteristics of Lagrangian navigation satellite, the error caused by ...
Youtao Gao +3 more
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Precise Orbit Determination of BDS MEO Satellites Based on Satellite TT&C Stations
International Journal of Aerospace Engineering, 2016 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.
Kezhao Li +5 more
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A Parallel Approach for Multi-GNSS Ultra-Rapid Orbit Determination
Remote Sensing, 2021 Global Navigation Satellite System (GNSS) ultra-rapid orbit is critical for geoscience and real-time engineering applications. To improve the computational efficiency and the accuracy of predicted orbit, a parallel approach for multi-GNSS ultra-rapid ...
Chunhua Jiang +5 more
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IEEE Access, 2023 Massive global Low Earth Orbit (LEO) constellations have been developed rapidly with the characteristics of larger number and shorter orbital periods of LEO satellites in recent years.
Shuren Guo +6 more
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Remote Sensing, 2022 Future Geosynchronous Synthetic Aperture Radar (GEOSAR) missions will provide permanent monitoring of continental areas of the planet with revisit times of less than 24 h.
Jorge Nicolás-Álvarez +6 more
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Orbit Determination Using Angle-Only Data for MEO & GEO Satellite and Obsolete [PDF]
Journal of Astronomy and Space Sciences, 2009 We used an optical observation system with a 0.6m wide-field telescope and 5 computers system in KASI (Korean Astronomy and Space Science Institute) for satellite optical observation.
Jin Choi +6 more
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Asteroid impact monitoring [PDF]
Serbian Astronomical Journal, 2006 Some asteroids and comets with Earth-crossing orbit may impact our planet, thus we need to be able to identify the cases which could have a dangerous close approach within a century.
Milani A.
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Uncertainty Analysis of the Short-Arc Initial Orbit Determination
IEEE Access, 2020 The solution of the short-arc angles-only orbit determination problem has large uncertainty because the topocentric range is not observable. For a certain angular observation tracklet with measurement noise, there exist numerous potential orbits, all of ...
Xuefeng Tao +4 more
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Effect of lunar gravity models on Chang'E-2 orbit determination using VLBI tracking data
Geodesy and Geodynamics, 2016 The precise orbit determination of Chang'E-2 is the most important issue for successful mission and scientific applications, while the lunar gravity field model with big uncertainties has large effect on Chang'E-2 orbit determination.
Erhu Wei +3 more
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Remote Sensing, 2022 The autonomous orbit determination of the navigation constellation uses only bidirectional ranging data of the inter-satellite link for data processing.
Wei Zhou +5 more
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