GEO/IGSO/MEO对北斗SPP精度的影响  

The Influence of GEO/IGSO/MEO on the Precision of Beidou SPP

作　　者：何瑞棉 高益忠[1] 欧阳松南[1] HE Ruimian;GAO Yizhong;OUYANG Songnan(Dongguan Geographic Information and Planning Research Center, Dongguan Guangdong 523000, China)

机构地区：[1]东莞市地理信息与规划编制研究中心,广东东莞523000

出　　处：《北京测绘》2020年第3期402-407,共6页Beijing Surveying and Mapping

摘　　要：北斗卫星导航系统混合星座增强了北斗的抗遮挡能力,每种星座卫星对定位精度的影响是目前研究的重点。本文基于北京地区的连续跟踪站BFGY站和ZGDZ站2018年第96天实测数据,采用反向分析法首次分析了GEO/IGSO/MEO对北斗卫星可见数、PDOP值和北斗SPP精度的影响程度,发现每种星座卫星都对北斗卫星可见数有很大的影响,对PDOP值的影响最大达到21;GEO卫星对SPP精度的影响大于IGSO卫星大于MEO卫星。The hybrid constellation of Beidou satellite navigation system enhances the anti-occlusion ability of Beidou.The influence of each constellation satellite on the positioning accuracy is the focus of current research.Based on the measured data of the continuous tracking station BFGY station and ZGDZ station in Beijing on the 96th day of 2018,this paper analyzes the contribution of GEO/IGSO/MEO to Beidou satellite visible number,PDOP value and Beidou SPP accuracy by reverse analysis.It is found that each constellation satellite has a great influence on the visible number of the Beidou satellite,and the impact on the PDOP value is up to 21;the GEO satellite contributes more to the SPP accuracy than the IGSO satellite is larger than the MEO satellite.

关 键 词：北斗标准单点定位(SPP) 地球静止轨道(GEO) 中圆地球轨道(MEO) 倾斜地球同步轨道(IGSO) 

分 类 号：P228.4[天文地球—大地测量学与测量工程]