BDS-3载波相位平滑伪距单点定位性能分析  

Performance Analysis of BDS-3 Carrier Phase Smoothing Pseudo-range Single Point Positioning

作　　者：岑铭 CEN Ming(Guangxi Water Conservancy and Electric Power Survey,Design and Research Institute Co.,Ltd.,Nanning 530023,China)

机构地区：[1]广西壮族自治区水利电力勘测设计研究院有限责任公司,广西南宁530023

出　　处：《地理空间信息》2022年第10期82-85,102,共5页Geospatial Information

基　　金：广西高校中青年教师科研基础能力提升项目(2021KY670)。

摘　　要：分析了相位平滑算法对BDS-3伪距单点定位性能的影响,选用多个MGEX跟踪站多天BDS-3多频数据,采用CNMC相位平滑算法,进行了BDS-3卫星B1I、B1C、B2a、B2b、B3I单频和B1C/B2a、B1I/B3I双频组合伪距单点定位和相位平滑伪距单点定位实验。实验结果表明:CNMC相位平滑伪距算法能有效提升伪距单点定位性能的稳定性,对B1I定位精度提升量在10%~15%之间;对B1C、B2a、B2b、B3I定位精度提升量在2%~10%之间;对B1C/B2a定位精度提升量在30%~35%之间;对B1I/B3I定位精度的提升量在40%~50%之间,对双频组合伪距单点定位精度的提升量优于单频定位。In order to analyze the influence of phase smoothing algorithm on the performance of BDS-3 pseudo-range single point positioning(PPP),we selected the multiple MGEX tracking stations for multi-day BDS-3 multi-frequency data,and used the CNMC phase smoothing algo-rithm to perform BDS-3 satellites B1I,B1C,B2a,B2b,B3I single-frequency and B1C/B2a,B1I/B3I dual-frequency combined pseudo-range PPP and phase-smooth pseudo-range PPP experiments.The experimental results show that the CNMC phase smoothing pseudo-range algorithm can effectively improve the stability of pseudo-range PPP performance.The positioning accuracy of B1I is improved by 10%~15%,and the posi-tioning accuracy of B1C,B2a,B2b and B3I are improved.Between 2%and 10%,the positioning accuracy of B1C/B2a is improved between 30%and 35%,and the positioning accuracy of B1I/B3I is improved between 40%and 50%.The improvement of PPP accuracy is better than that of single frequency positioning.

关 键 词：BDS-3 CNMC相位平滑伪距 单频 双频 定位性能 

分 类 号：P228[天文地球—大地测量学与测量工程]