The positioning performance analysis of COMPASS integrated with GPS

Weihua Ma, Jianjun Luo, Jianping Yuan, Xiaokui Yue, Shuguang Li

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

COMPASS system, termed as the Beidou-2 Navigation Satellite System, is the navigation satellite system of China. There are about eight working satellites currently in space although COMPASS is to be a global navigation satellite system. As the first construction stage of COMPASS, 12 satellites would be located in space by the end of 2012. The corresponding system is named as COMPASS-1. It is still regional system and its positioning performance is not good enough because constellation configuration would result in poor geometric construction of navigation satellites sometimes. To improve the navigation performance of the COMPASS-1, the system integrated with GPS is discussed here. One method is considered to work with more satellites, with which COMPASS satellites should be good geometric construction, so the COMPASS-1 are supposed to work together with GPS. COMPASS-1/GPS integrated system is adopted positioning navigation algorithm with code pseudo-range information. The news performance indexes, based on Geometric Dilution of Positioning (GDOP) of the COMPASS integrated with GPS, are researched here. Maximum-optimal GDOP (MGDOP) and Average-optimal GDOP (AGDOP) are used to evaluate the positioning performance of integrated system. MGDOP is the maximum of all optimal GDOP which is the smallest in all GDOP corresponding to fixed place and fixed time. It is used to estimate the worst positioning precision in the limited area during the available time. AGDOP is the average of all optimal GDOP corresponding to fixed place and fixed time. It is used to estimate the average positioning precision in the limited area during the available time. Simulation shows that the COMPASS-1 has poor positioning performance in the northwest of China or its neighbouring area although it supplies better servicing for the other area of China. COMPASS-1 integrated with GPS supplies good positioning better than COMPASS-1 does when servicing in the area. Simultaneity, if working with COMPASS-1, positioning precision of GPS could be better and more stable.

源语言英语
主期刊名62nd International Astronautical Congress 2011, IAC 2011
3154-3161
页数8
出版状态已出版 - 2011
活动62nd International Astronautical Congress 2011, IAC 2011 - Cape Town, 南非
期限: 3 10月 20117 10月 2011

出版系列

姓名62nd International Astronautical Congress 2011, IAC 2011
4

会议

会议62nd International Astronautical Congress 2011, IAC 2011
国家/地区南非
Cape Town
时期3/10/117/10/11

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