BDS-3不同类型卫星对BDS-2伪距定位性能提升定量分析

Quantitative analysis of BDS-3 pseudo-range positioning performance improvement by different types of BDS-3 satellites

摘要: 针对北斗三号（BDS-3）不同类型卫星对北斗二号（BDS-2）伪距单点定位性能的影响,基于iGMAS机构发布的跟踪站实测数据,分析了BDS-3地球静止轨道（GEO）、倾斜地球同步轨道（IGSO）、中圆轨道（MEO）、全部BDS-3卫星对BDS-2卫星可见数、位置精度因子（PDOP）值以及伪距单点定位精度的影响．经研究发现,BDS-3不同卫星对BDS-2卫星可见数、卫星空间几何结构以及伪距单点定位精度提升程度不同,MEO卫星的提升程度优于IGSO卫星和GEO卫星,三种类型卫星对BDS-2定位性能提升量之和与全部BDS-3卫星对BDS-2定位性能提升量相当．

Abstract: Based on the measurement data of tracking stations released by iGMAS,the BDS-3 GEO,IGSO,MEO,and all BDS-3 satellites are analyzed for the impact of BDS-3 different types of satellites on the BDS-2 pseudorange single-point positioning performance.The impact of satellite visibility, PDOP value, and pseudorange single-point positioning accuracy.The research found that BDS-3 satellites have different degrees of improvement in BDS-2 satellite visibility,satellite space geometry and pseudorange single-point positioning accuracy.MEO satellites are better than IGSO satellites than GEO satellites.The sum of the satellite positioning performance improvements to BDS-2 is the same as that of all BDS-3 satellite positioning performance improvements to BDS-2.