GPS/COMPASS组合变形测量性能分析  

Analysis of Deformation Monitoring Ability for Combined GPS/COMPASS Systems

作　　者：向民志 薛志宏[1,2] 孙现申 刘兴春 

机构地区：[1]信息工程大学地理空间信息学院 [2]航天恒星科技有限公司(503所) [3]65015部队

出　　处：《全球定位系统》2013年第3期16-19,共4页Gnss World of China

基　　金：中国航天科技集团公司卫星应用研究院开放基金资助(批准号:2012-1520)

摘　　要：GNSS系统的定位精度和可靠性在很大程度上依赖于观测到的卫星数量和几何图形分布。在城市、露天矿区和峡谷等地区,由于可观测卫星数少,单一系统的定位精度往往难以满足要求,GNSS多星座组合是解决问题的一个有效措施。选取雅砻江卡拉电站滑坡监测网中的一个监测点,利用实测的COMPASS星历和GPS卫星星历,从可见卫星数目及GDOP值两个角度,对GPS、COMPASS单星座系统以及其组合系统变形测量性能进行了对比分析。实验表明GPS和COMPASS组合系统能够有效改善变形监测精度。The positioning accuracy and reliability of GNSS system depends heavily on the observed number of satellites and geometry distribution. In the city and open-pit mining and valley etc. , because of less visible satellites, a single system positioning accuracy is often difficult to meet the requirements, and GNSS multi-constellation integrated navigation is an effective solution to the problem. Selecting one point of the Kala hydroelectric station land- slide monitoring network, studied the deformation monitoring ability of GPS.COMPASS and the integrated system by analyzing the visible satellite number and GDOP value using the measured GPS and COMPASS navigation ephemeris. The results indicate： the COMPASS/ GPS multi-constellation integrated navigation system can greatly improve the deformation monitoring precision.

关 键 词：COMPASS GPS 组合定位 变形测量 

分 类 号：P228.4[天文地球—大地测量学与测量工程]