TY - JOUR
T1 - Comparison of Beidou autonomous navigation performance using the SRP model and onboard accelerometers
AU - Qiao, Jing
AU - Xu, Guochang
AU - Liu, Wanke
AU - Fang, Peng
AU - Chen, Wu
N1 - Funding Information:
The work described in this paper was substantially supported by the National Key Research and Development Program of China (Project 2016YFB0502101 ), and the European Commission/Research Grants Council (RGC) Collaboration Scheme sponsored by the Research Grants Council of Hong Kong Special Administrative Region, China (Project No. E-PolyU 501/16 ), and the Research Institute of Sustainable Development of the Hong Kong Polytechnic University .
Publisher Copyright:
© 2020 IAA
PY - 2020/8
Y1 - 2020/8
N2 - The Autonomous Navigation (AutoNav) mode of a Global Navigation Satellite System (GNSS) utilizes Inter-Satellite Links (ISLs) to maintain satellite operations without the service from the ground control segment. The newly launched Beidou satellites are capable of conducting ISLs for orbit determination to improve their autonomy, integrity, reliability, and robustness. However, the satellite orbit errors can increase over time due to various force model errors, particularly that of Solar Radiation Pressure (SRP). Accelerometers aboard satellites can measure non-conservative forces directly and have been successfully used in satellite missions for gravity recovery and atmosphere study (i.e., GRACE, CHAMP, and GOCE). This study investigates the feasibility to use accelerometers aboard Beidou satellites to improve AutoNav accuracy and service span. The results show that in a simulated 180-day AutoNav period, the orbit accuracy with the aid of accelerometers is two times better than that of using ISL data only.
AB - The Autonomous Navigation (AutoNav) mode of a Global Navigation Satellite System (GNSS) utilizes Inter-Satellite Links (ISLs) to maintain satellite operations without the service from the ground control segment. The newly launched Beidou satellites are capable of conducting ISLs for orbit determination to improve their autonomy, integrity, reliability, and robustness. However, the satellite orbit errors can increase over time due to various force model errors, particularly that of Solar Radiation Pressure (SRP). Accelerometers aboard satellites can measure non-conservative forces directly and have been successfully used in satellite missions for gravity recovery and atmosphere study (i.e., GRACE, CHAMP, and GOCE). This study investigates the feasibility to use accelerometers aboard Beidou satellites to improve AutoNav accuracy and service span. The results show that in a simulated 180-day AutoNav period, the orbit accuracy with the aid of accelerometers is two times better than that of using ISL data only.
KW - Accelerometer
KW - Autonomous navigation
KW - Beidou navigation satellite system
KW - Solar radiation pressure
UR - http://www.scopus.com/inward/record.url?scp=85083888458&partnerID=8YFLogxK
U2 - 10.1016/j.actaastro.2020.04.018
DO - 10.1016/j.actaastro.2020.04.018
M3 - Journal article
AN - SCOPUS:85083888458
SN - 0094-5765
VL - 173
SP - 183
EP - 194
JO - Acta Astronautica
JF - Acta Astronautica
ER -