不同截止高度角下BDS／GPS／GALILEO 多模组合SPP 解算性能分析

Performance Analysis of Multimode SPP Solving for BDS／GPS／GALILEO at Different Cut-Off Height Angles

摘要: 文中选取MGEX跟踪站部分测站的2016年2月1日1天的观测数据,在截止高度角分别为5°、15°、25°、30°、40°、45°的情况下,分析BDS(C)、GPS(G)、GPS+BDS(GC)、BDS+GALILEO(CE)、GPS+GALILEO(GE)、GPS+BDS+GALILEO(GCE)六种组合模式的单点定位(SPP)的定位性能. 研究结果表明:GPS+BDS+GALILEO(GCE)组合稳定性最好. 同一高度截止角下,卫星数目最多,历元可用率最高,为96％,相比其他模式,定位精度提高了20％~40％. 在建筑物密集区、山区、树林和遮挡严重的区域具有很好的应用价值.

Abstract: This paper selects the observation data of February 1st, 2016, which is part of the MGEX tracking station, in the case of cut-off elevation angles of 5°, 15°, 25°, 30°, 40°, and 45°, respectively,This paper analyzes the positioning performance of single point positioning (SPP) of six combined modes of BDS(C), GPS(G), GPS+BDS(GC), BDS+GALILEO(CE), GPS+GALILEO(GE),and GPS+BDS+GALILEO(GCE). Research indicates: the stability of GPS+BDS+GALILEO(GCE) is the best. At the same height, the number of satellites is the highest, the rate of epoch availability is highest, which is 96％, compared with other combination modes, the positioning accuracy increased by 20％~40％. It has good application value in denselypacked areas, mountains, forests, and areas with severe shelter.