BDS反演对流层湿延迟精度比较分析  

Comparison and analysis of zenith wet delay accuracy of BDS inversion

作　　者：王郁茗[1] 邵利民[1] 张尚悦[1] WANG Yuming;SHAO Limin;ZHANG Shangyue(Dept.of Navigation,Dalian Naval Academy,Dalian 116018,China)

机构地区：[1]海军大连舰艇学院航海系,辽宁大连116018

出　　处：《中国测试》2018年第8期20-25,共6页China Measurement & Test

基　　金：国防科研基金资助项目(DJYKY2014-103)

摘　　要：利用现阶段BDS对不同干湿季月份的4个亚太区域和2个非亚太区域MGEX跟踪站反演对流层湿延迟,以高精度的GPS反演结果为基准,对BDS反演结果进行比较分析。实验表明,现阶段BDS系统在亚太及其周边区域反演对流层湿延迟精度与GPS结果较为一致,平均偏差在8 mm以内,均方根误差在10 mm以内。不同情况下存在差异:BDS卫星数少或GDOP值较大时会导致BDS反演误差增高,精度降低,BDS与GPS组合反演精度平均偏差和均方根误差均在1 mm以内,可利用BDS与GPS联合解算提高精度;干季月份水汽含量低,BDS反演结果与GPS更为一致,平均偏差在2 mm以内,均方根误差在3 mm以内,且反演精度能稳定保持在较高水平。The BDS inversion results were compared with the results of high frequency GPS inversion,and the results were compared with those of the four sub-regions of the Asia-Pacific region and two non-Asia-region MGEX tracking stations.Experiments show that the BDS system in the Asia-Pacific region and its surrounding area inversion of the tropospheric wet delay accuracy and GPS results are more consistent,the average deviation of less than 8 mm,root mean square error within 10 mm.The difference between BDS and GPS is low,the accuracy of BDS and GPS combination is improved,the accuracy of BDS and GPS combination is equal to less than 1 mm,and BDS and GPS combined solution to improve the accuracy;dry season monthly water vapor content is low,BDS inversion results and GPS more consistent,the average deviation of less than 2 mm,root mean square error within 3 mm,and inversion accuracy can be maintained at a high level.

关 键 词：BDS GPS 对流层湿延迟 反演 精密单点定位 

分 类 号：TB921[一般工业技术—计量学]