基于全球激光观测资料的COMPASS-M1轨道质量评定
Determining Orbit of COMPASS-M1 Using International Laser Ranginge Data
-
摘要: 介绍了基于全球IGS实时站数据流的广域实时精密定位原型系统的工作流程及关键技术解决方案。原型系统通过接收全球50个左右IGS参考站1s采样间隔的实时观测数据每秒解算的卫星钟差,并将广播星历的轨道与钟差改正数通过无线通信网络发送给双频用户,用户通过实时精密单点定位的方式实现高精度实时定位。原型系统的整个链路时间延迟为4～8s。测试结果表明,实时钟差产品精度优于0.2ns,实时用户定位精度平面为10cm,高程优于20cm。Abstract: COMPASS-M1 satellite orbits with different arc lengths are determined based on SLR-only data collected from the ILRS tracking network. Orbit overlaps and range residuals are derived to assess the orbit quality. SLR-based orbits of 19 days arc length are determined with an accuracy of about 0.207 m in radial orbit component,2.28 m in 3D position,and 0.25 m in radial orbit component,2.75 m in 3D position after 1 day of prediction.
下载:
