The rapid development of Low Earth Orbit (LEO) constellation, with the advantages of strong landing signal, rapid change of satellite geometry and strong anti-interference capability of satellite signal, has become an important development trend of satellite navigation enhancement. In view of the problems such as weak landing signals of BeiDou-3 Navigation Satellite System (BDS-3) and vulnerability to external spoofing, combined with the potential advantages of LEO constellation, this paper explores the improvement of the credibility of BeiDou navigation satellites with the enhancement of LEO constellation, namely integrity and anti-spoofing. Through the receiver autonomous integrity monitoring algorithm (RAIM), based on the integrity fault detection rate index, the improvement of the integrity performance of the LEO constellation enhanced BDS-3 was analyzed. On this basis, an improved RAIM identification algorithm is proposed for both integrity and hostile faults. Based on the fault detection rate and recognition rate index, the anti-spoofing performance of LEO constellation enhanced BDS-3 is studied and analyzed. The simulation results show that, under the pseudorange deviation of 15 m to 30 m, the integrity fault detection rate of two different LEO constellations with 72 and 144 satellites is 8% and 10% higher than that of single BDS-3 respectively. The two different LEO constellations with 72 and 144 satellites have improved the detection rate of hostile faults by 8% and 10%, and the recognition rate by 40% and 50% respectively, compared with the single BDS-3 under the pseudorange deviation of 15 m to 50 m. Therefore, the enhancement of BDS by LEO constellation can effectively improve the credibility performance of BDS.
Credibility Research of BeiDou Navigation Satellites Based on LEO Constellation Enhancement
Lect. Notes Electrical Eng.
China Satellite Navigation Conference ; 2022 ; Beijing, China May 22, 2022 - May 25, 2022
China Satellite Navigation Conference (CSNC 2022) Proceedings ; Kapitel : 17 ; 196-209
2022-05-10
14 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
LEO constellation , BeiDou-3 Navigation Satellite System , Receiver autonomous integrity monitoring (RAIM) , Credibility Engineering , Communications Engineering, Networks , Signal, Image and Speech Processing , Aerospace Technology and Astronautics , Control, Robotics, Mechatronics , Computer Applications , Geography, general
Credibility Research of BeiDou Navigation Satellites Based on LEO Constellation Enhancement
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