Results 141 to 150 of about 425 (159)
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Type B Fault Integrity Monitoring for BDS Broadcast Ephemeris
2020The integrity and continuity of aircraft precision approach are the most significant performance requirements for aviation users. To ensure positioning integrity of users, it is necessary to detect type B ephemeris fault one of the main integrity risk sources of precision approach.
Liang Li +3 more
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Accuracy Analysis of BDS-3 Experiment Satellite Broadcast Ephemeris
2018Currently, five BDS-3 experiment satellites are transmitting both BDS-2 signals and new signals for users. They are equipped with high-precision rubidium or/and passive hydrogen maser clocks. In view of the inconsistency of BDS-3 experiment satellites signals received by iGMAS and MGEX network, the experiment to determine BDS-3 orbits is carried out by
Ya Mao, Qianxin Wang, Chao Hu, Yilei He
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Fitting Method and Accuracy Analysis of Broadcast Ephemeris in Hybrid Constellation
2014Broadcast ephemeris parameter is an important reflection of navigation system service performance. In hybrid constellation, GEO, IGSO and MEO satellites have different dynamic characteristics which lead to different fitting performances. In this article, the basic physical meaning of ephemeris parameters are analyzed, and the evaluation for the ...
Feng He +8 more
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Satellite autonomous navigation algorithm analysis based on broadcast ephemeris parameters
SCIENTIA SINICA Physica, Mechanica & Astronomica, 2015At present, the satellite on-board processing and transmission capacity of autonomous navigation is not enough to support the traditional centralized dynamic navigation algorithm. In order to augment the possibility of centralized onboard processing, this paper puts forward a centralized kinematics orbit determination method which is based on the long ...
XiaoLin JIA +5 more
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Real-Time Determination of a BDS Satellite's Velocity Using the Broadcast Ephemeris
2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control, 2014This paper studies the algorithms for determining a BDS satellite's velocity using the broadcast ephemeri. Firstly, by taking the time derivatives of the Kepler orbit elements and the correction terms, the algorithm comprises close-form analysis formulas and the processing steps for directly computing a BDS satellite's instant velocity using the ...
Guangjun Liu, Jing Guo
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GPS ephemeris message broadcast simulation
2012The warfighter constantly needs increased accuracy from GPS and a means to increasing this accuracy to the decimeter level is a broadcast ephemeris message containing GPS satellite orbit and clock corrections. The ephemeris message is produced at the GPS MCS (Master Control Station) which receives GPS signal data from NGA and Air Force worldwide and ...
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Satellite Ephemeris Broadcasting Architecture for 5G Integrated LEO Satellite Internet
2022 IEEE 22nd International Conference on Communication Technology (ICCT), 2022Jianwei Li +4 more
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Machine learning approach for predicting precise ZTD produced by GNSS broadcast ephemeris
2022 IEEE 11th Global Conference on Consumer Electronics (GCCE), 2022Taiki Matsumura +3 more
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A Novel Method to Provide URE in Broadcast or Extended Ephemeris
ION Pacific PNT, 2017Wentao Zhang, Yang Gao
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