基于不同卫星截止高度角的伪距单点定位性能  

Performance of Pseudo-range Single Point Positioning on Different Satellite Cut-off Elevation Angles

作　　者：张维宽 董进生[1,2] 赵海霞 安华育[1,2] ZHANG Weikuan;DONG Jinsheng;ZHAO Haixia;AN Huayu(Key Laboratory of Geological Processes and Minereal Resources of Northern Qing-Tibetan, Qinghai Province,Xining, Qinghai 810012, China;Qinghai Institute of Geological Survey, Xining, Qinghai 810012, China)

机构地区：[1]青海省青藏高原北部地质过程与矿产资源重点实验室,青海西宁810012 [2]青海省地质调查院,青海西宁810012

出　　处：《中国锰业》2018年第6期30-33,共4页China Manganese Industry

摘　　要：随着全球卫星导航系统的飞速发展,GPS和GLONASS两种导航系统在全球得到广泛应用,并且目前应用最为广泛的导航定位模式是伪距单点定位。然而在山区或城区等遮挡严重区域,伪距单点定位精度在很大程度上受卫星截止高度角的影响。因此,文章开展了在0(°)～30(°)(间隔为5(°))的卫星截止高度角条件下,GPS、GLONASS以及两者组合的伪距单点定位实验。实验结果表明:两者组合定位模式对卫星截止高度角最不敏感; GLONASS受截止高度角影响最大;此外,在临界截止高度角处,三维方向中U方向受其影响最大。With the rapid development of global satellite navigation systems,both GPS and GLONASS navigation systems are widely used in the world.The widely-used navigation positioning mode is pseudo-range single point positioning.However,in the areas such as mountainous areas or urban areas that are heavily covered,its accuracy is largely affected by the satellite cut-off elevation angle.Therefore,the article carries out a pseudo-range single point positioning experiment of GPS,GLONASS.We know of a combination of the both at a satellite cut-off elevation angle of 0(°)to 30(°)(5(°)spacing).The experimental results show that the combined positioning mode is the least sensitive to the satellite cut-off elevation angle.Glonass is the most affected by the cut-off elevation angle.In addition,at the critical elevation cut-off angle,the U direction in the three-dimensional direction is most affected.

关 键 词：伪距单点定位 卫星截止高度角 置信区间 组合定位 

分 类 号：P228.4[天文地球—大地测量学与测量工程]