北斗系统测试型用户机定位性能影响分析  

Impact Analysis of BDS Testing Terminal Positioning Performances

作　　者：任晖 刘沉 李腾 赵伟 

机构地区：[1]北京卫星导航中心,北京100094

出　　处：《导航定位学报》2016年第1期1-4,15,共5页Journal of Navigation and Positioning

摘　　要：随着BDS的快速发展,电离层延迟、对流层延迟、轨道误差等得到了有效消除或减弱,但是不同接收机端的多路径效应误差是不相关的,不能通过差分技术进行修正,使得多径误差成为影响用户定位精度的主要误差源。针对多径误差对BDS测试型用户机定位性能的影响,提出采用Double-Delta抗多径技术,并通过在BDS测试型用户机上分别采用Double-Delta抗多径和窄相关处理技术获取测试数据,分析了不同基带处理技术多径抑制性能。结果表明采用Double-Delta抗多径处理技术BDS测试型用户机的双频定位精度更优,多径误差是影响目前北斗用户双频定位精度的主要误差源。Along with GNSS modernization,troposphere delay error,ionosphere delay error and satellite orbit error can be effectively eliminated or decreased.However,multipath error is difficult to be mitigated by difference correction for that multipath impacts are irrelevant.Double-Delta anti-multipath technology is used to avoid the influence,which is caused by multipath error,to position Performance of BeiDou testing terminal,and based on the experimental data which is acquired by a testing terminal based on wideband correlation,narrowband correlation and Double-Delta algorithms,respectively,impacts of different base band signal processing techniques on the positioning performances of the terminal are analyzed.The analytical results demonstrate that the Compass terminal can get the best positioning accuracy by the Double-Delta algorithm.

关 键 词：多路径误差 测试型用户机 窄相关 Double-Delta 

分 类 号：P228[天文地球—大地测量学与测量工程]