Influence of anchors on the precision of autonomous navigation for BDS

doi:10.13474/j.cnki.11-2246.2020.0114

Abstract

Abstract: This paper has introduced the orbit determination and time synchronization observation equations. Aiming at the simulated constellation of BDS, AutoNav for 60 days has been implemented adopting the simulated inter-satellite and satellite-anchor observations. The influence of the number of anchors and the continuity of anchor observations on the precision of AutoNav has been discussed, considering the three different types of satellites for BDS. Results indicate that the number of anchors and the continuity of anchor observations have no affect on the result of RERR and CERR, but the precision of URE can be improved distinctly by adding one anchor into the constellation, and which can be further improved when increasing the number of anchors with a limited effect. On the other hand, for the continuity of anchor observations, the longer the interruption time of anchor observations, the lower the precision of AutoNav. Therefore, the high observation frequency to satellites from anchors should be ensured to keep the high precision of AutoNav. Besides, the influences of the number of anchors and the continuity of anchor observations on the three types of satellites have no difference.

Key words: BDS, AutoNav, anchor, inter-satellite cross-link, parameter decomposition filter model

CLC Number:

P228

GONG Xiaoying, CAI Shixiang. Influence of anchors on the precision of autonomous navigation for BDS[J]. Bulletin of Surveying and Mapping, 2020, 0(4): 68-75.

References

[1] YANG D, YANG J, XU P. Timeslot scheduling of inter-satellite links based on a system of a narrow beam with time division[J]. GPS Solutions, 2017, 21(3):999-1011.
[2] ZHOU Y, WANG Y, HUANG W, et al. In-orbit performance assessment of BeiDou intersatellite link ranging[J]. GPS Solutions, 2018, 22(4):119.
[3] ANANDA M P, BERNSTEIN H, FEESS W A. Global Positioning System (GPS) autonomous user system[J]. Navigation, 1998, 35(2):197-216.
[4] RAJAN J. Highlights of GPS II-R autonomous navigation[C]//Proceedings of the 58th Annual Meeting of The Institute of Navigation and CIGTF 21st Guidance Test Symposium, ION. Albuquerque:[s.n.], 2002:354-363.
[5] CHANG J, SHANG L, LI G. The research on system error of inter-satellite-link (ISL) measurements for autonomous navigation of Beidou system[J]. Advances in Space Research, 2017, 60(1):65-81.
[6] WANG H, CHEN Q, JIA W, et al. Research on autonomous orbit determination test based on BDS inter-satellite-link on-orbit data[C]//Proceedings of 2017 China Satellite Navigation Conference.[S.l.]:Springer, 2017:89-99.
[7] PAN J, HU X, ZHOU S, et al. Time synchronization of new-generation BDS satellites using inter-satellite link measurements[J]. Advances in Space Research, 2018, 61(1):145-153.
[8] TANG C, HU X, ZHOU S, et al. Initial results of centralized autonomous orbit determination of the new-generation BDS satellites with inter-satellite link measurements[J]. Journal of Geodesy, 2018, 92(10):1155-1169.
[9] 中国卫星导航系统管理办公室. 北斗卫星导航系统发展报告(3.0版)[EB/OL]. 2018-12-01. http://www.beidou.gov.cn/xt/gfxz/201812/P020181227529449178798.pdf.
[10] RAJAN J, BRODIE P, RAWICZ H. Modernizing GPS autonomous navigation with anchor capability[C]//Proceedings of International Technical Meeting of the Satellite Division of the Institute of Navigation, ION. Portland:[s.n.], 2003:1534-1542.
[11] 杜玉军, 王甫红, 王泽民, 等. 导航卫星自主定轨星座旋转误差的地面校正算法[J]. 武汉大学学报(信息科学版), 2015, 40(4):534-539.
[12] 尚琳, 任前义, 张锐, 等. 利用锚固站时序差分测量消除星座旋转误差[J]. 武汉大学学报(信息科学版), 2013, 38(8):920-924.
[13] 杨力, 郭飞霄, 文援兰, 等. 单锚固站辅助导航星座自主定轨分析[J]. 飞行器测控学报, 2013, 32(5):444-448.
[14] 汪菲菲, 郭飞霄, 文援兰. 锚固站数量及布局对导航星座自主定轨影响分析[J]. 飞行器测控学报, 2015, 34(3):254-259.
[15] REN X, YANG Y, ZHU J, et al. Comparing satellite orbit determination by batch processing and extended Kalman filtering using inter-satellite link measurements of the next-generation BeiDou satellites[J]. GPS Solutions, 2019, 23(1):25.
[16] GONG X, HUANG D, CAI S, et al. Parameter decomposi-tion filter of BDS-3 combined orbit determination using inter-satellite link observations[J]. Advances in Space Research, 2019, 64(1):88-103.
[17] 龚晓颖,徐韶光,冯威. 星间链路构型对自主导航精度的影响分析[J].大地测量与地球动力学,2017, 37(11):1-5.
[18] GONG X. Parameter integration filter and parameter decom-position filter for autonomous navigation of BDS[J]. GPS Solutions, 2017, 21(3):1405-1416.
[19] ANANDA M P, BERNSTEIN H, CUNNINGHAM K E, et al. Global Positioning System autonomous navigation[C]//Proceedings of IEEE Position Location & Navigation Symposium.[S.l.]:IEEE, 1990:497-508.