摘要
印度星座导航系统(NAVIC)是由印度空间研究组织(ISRO)打造的区域性卫星导航系统,为印度及其邻近地区提供独立的定位、导航和授时服务。本文利用SLR数据检核广播星历精度的原理和方法,采用2017年1月至2018年6月的SLR观测数据,对NAVIC各卫星广播星历的精度进行评估。结果表明,IRNSS-1b卫星广播星历的视向精度约为2.7m;1RNSS-1c、JRNSS-1d、JRNSS-1e卫星广播星历的视向精度分别约为1.62m、2.18m、1.79m。
Navigation with Indian Constellation (NAVIC) is a regional satellite navigation system made by the Indian Space Research Organization (ISRO) to provide independent positioning, navigation and timing services for India and neighboring regions. The principle and method of checking broadcast ephemeris accuracy using SLR data is discussed in this paper. The accuracy of NAVIC satellites ephemeris is evaluated by SLR observation data from January 2017 to June 2018. The results show that the line - of- sight accuracy of the IRNSS - 1b satellite broadcast ephemeris is about 2. 7m, the line - of - sight accuracy of IRNSS - 1c, IRNSS - 1d and IRNSS - 1e satellites are approximately 1.62m, 2. 18m, and 1.79m respectively.
作者
李鼎
贾小林
王海春
孙鹏飞
杨武召
Li Ding;Jia Xiaolin;Wang Haichun;Sun Pengfei;Yang Wuzhao(School of Geology Engineering and Surveying, Chang'an University, Xi'an 710054,China;Xi'an Research Institute of Surveying and Mapping, Xi'an 710054,China)
出处
《测绘科学与工程》
2018年第5期12-16,共5页
Geomatics Science and Engineering
基金
地理信息工程国家重点实验室开放基金资助项目(SKLG1E2015-M-1-2,SKLGIE2016-M-3-2)。
