TY - JOUR
T1 - BDS autonomous orbit determination using inter-satellite tracking and onboard accelerometers
AU - Qiao, Jing
AU - Chen, Wu
AU - Liu, Zhizhao
N1 - Funding Information:
Zhizhao Liu currently is an Associate Professor at the Department of Land Surveying and Geo-Informatics (LSGI), The Hong Kong Polytechnic University, Hong Kong, P. R. China. He received his BSc degree in Surveying Engineering from the Jiangxi University of Science and Technology, China, in 1994 and MSc degree in Geodesy from the Wuhan University, China, in 1997. He earned his PhD in Geomatics Engineering from the University of Calgary, Canada, in 2004. His research interests include new algorithm development for precise Global Positioning System (GPS) and Global Navigation Satellite System (GNSS), GPS/GNSS Precise Point Positioning, ionosphere modeling and scintillation monitoring, tropospheric modeling and GPS/GNSS meteorology. He was the recipient of the inaugural Early Career Award of the Hong Kong Research Grants Council (RGC), Hong Kong, in 2012 and was the recipient of the inaugural Best Conference Paper of the China Satellite Navigation Conference (CSNC), China, in 2013. In 2014, he was nominated by the Hong Kong Observatory for the World Meteorological Organization (WMO) “Norbert Gerbier-MUMM International Award for 2015” for his paper that has developed a method to evaluate the absolute accuracy of water vapor measurements.
Funding Information:
The work described in this paper was substantially supported by the grants from Hong Kong RGC Joint Research Scheme (EC/RGC Collaboration Scheme, E-PolyU501/16) and the Research Institute of Sustainable Urban Development (RISUD) of Hong Kong Polytechnic University.
Publisher Copyright:
© 2017 Proceedings of the Institute of Navigation Pacific Positioning, Navigation and Timing Meeting, Pacific PNT.
PY - 2017
Y1 - 2017
N2 - Satellites Autonomous Navigation (AutoNav) mode utilizes inter-satellite crosslink measurements to maintain satellites operation, without relying on ground control facilities. The newly launched BeiDou (BD) satellites are capable of conducting satellite to satellite tracking (SST). However, as there is no absolute reference frame control with SST data only, satellite constellation will experience rotation related to the earth fixed reference frame, due to various force perturbations. The main problem for orbit determination is how to precisely model the non-conservative forces (i.e. Solar Radiation Pressure (SRP)). Space-borne accelerometers have been successfully used for gravity recovery and atmosphere study in GRACE, CHAMP, and GOCE missions to measure the non-conservative forces directly. This study investigates the feasibility to use accelerometers onboard BD satellites to improve BD AutoNav accuracy and service span. Using simulated BD orbits and SST data, AutoNav has been performed using SST data only or SST data with accelerometers. Using the simulated inter-satellite range observations of decimeter level accuracy (σ=0.75 m), AutoNav with accelerometer data can achieve 15 m and 8 m horizontal orbit accuracies for GEO/IGSO and MEO satellites within a 180-day AutoNav period, which is significantly better than the results from SST data only.
AB - Satellites Autonomous Navigation (AutoNav) mode utilizes inter-satellite crosslink measurements to maintain satellites operation, without relying on ground control facilities. The newly launched BeiDou (BD) satellites are capable of conducting satellite to satellite tracking (SST). However, as there is no absolute reference frame control with SST data only, satellite constellation will experience rotation related to the earth fixed reference frame, due to various force perturbations. The main problem for orbit determination is how to precisely model the non-conservative forces (i.e. Solar Radiation Pressure (SRP)). Space-borne accelerometers have been successfully used for gravity recovery and atmosphere study in GRACE, CHAMP, and GOCE missions to measure the non-conservative forces directly. This study investigates the feasibility to use accelerometers onboard BD satellites to improve BD AutoNav accuracy and service span. Using simulated BD orbits and SST data, AutoNav has been performed using SST data only or SST data with accelerometers. Using the simulated inter-satellite range observations of decimeter level accuracy (σ=0.75 m), AutoNav with accelerometer data can achieve 15 m and 8 m horizontal orbit accuracies for GEO/IGSO and MEO satellites within a 180-day AutoNav period, which is significantly better than the results from SST data only.
UR - http://www.scopus.com/inward/record.url?scp=85048009294&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:85048009294
SN - 2331-6284
VL - 2017-May
SP - 307
EP - 316
JO - Proceedings of the Institute of Navigation Pacific Positioning, Navigation and Timing Meeting, Pacific PNT
JF - Proceedings of the Institute of Navigation Pacific Positioning, Navigation and Timing Meeting, Pacific PNT
T2 - Institute of Navigation Pacific Positioning, Navigation and Timing Meeting, PACIFIC PNT 2017
Y2 - 1 May 2017 through 4 May 2017
ER -