摘要
针对转发式卫星定位系统目前尚处建设初期,可用卫星数量较少,基于实测数据的相关实验和精度验证工作较难开展等问题,利用我国BDS中类转发式系统的GEO卫星和IGSO卫星数据,提出仿真类转发式卫星的虚拟钟数据和观测数据的技术方法,并基于转发式定位原理进行相应导航定位精度验证实验。数值算例结果表明,利用5颗GEO卫星和1颗IGSO卫星,用户站的差分定位精度在平面上约为2 m,高程精度优于3 m,利用5颗GEO卫星和5颗IGSO卫星,用户站的差分定位精度平面和高程方向上均优于0.1 m,初步验证了转发式导航定位系统的精度和性能。
The China Area Position System (CAPS)is still in the construction and has not enough available satellite.The experiments to evaluate the accuracy of positioning are difficult to perform.In case of BeiDou navigation satellite system (BDS) contains geostationary orbit (GEO)satellites and Inclined Geosynchronous Satellite Orbit (IGSO)satellites which are analo-gous to CAPS satellites,virtual CAPS satellite clocks data and satellite observation data are simulated based on BDS satellites data.The experiment to evaluate the accuracy is carried on based on the positioning principle of CAPS.The numerical example shows that the positioning precision at the user station can reach about 2 m on plane and better than 3 m on elevation when uti-lizing 5 GEO and 1 IGSO satellites.When utilizing 5 GEO and 5 IGSO satellites,it can reach about 0.1 m on plane and eleva-tion.The simulate results validate the positioning precision and performance of CAPS.
出处
《导航定位学报》
2015年第3期110-116,共7页
Journal of Navigation and Positioning
基金
地理信息工程国家重点实验室开放基金(SKLGIE2013-Z-2-1)
宇航动力学国家重点实验室开放基金(2013ADLDW0103)
国家自然基金青年基金(41304033)
北斗二代导航重大专项课题(GFZX0301040308)
