BDS/GPS单历元多频定向算法性能对比  

Study on algorithm of BDS/GPS multi-frequency instantaneous heading determination and its performance analysis

作　　者：单弘煜 何俊[1] 刘心龙 刘万科[1] 

机构地区：[1]武汉大学测绘学院,武汉430079

出　　处：《测绘科学》2016年第2期158-162,共5页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(41204030);中电集团54所高校合作项目(KX132600031);预研基金项目(9140A24020713JB11342;51324040103);2014国家基础测绘科技项目

摘　　要：针对多频多系统定向的不同需求,该文采用了BDS/GPS单历元双差非组合定向算法以及附有基线长约束的最小二乘降相关平差模糊度固定方法。4组实测数据的处理结果表明,单频GPS、单频BDS的模糊度平均固定成功率分别为55.9%、84.3%;单频双系统、多频(双频三频)单系统及多频(双频或三频)双系统定向时,其模糊度固定成功率均可达98%以上;在模糊度固定正确的情况下,BDS/GPS组合定向的精度最高,且与单GPS较为相近,但两者都略高于单BDS,频率差异所带来的精度差异并不明显。According to the fact of different performance on standalone or combined GNSS attitude determination with single/double/triple frequency data,an efficient GNSS attitude determination algorithm using single-epoch observations and known baseline length constraint（CLAMBDA）was put forward.The results based on real data showed that the average success rate of single frequency for GPS and BDS was55.9% and 84.3%separately;for BDS/GPS single frequency,BDS or GPS multi frequencies（double frequencies or triple frequencies）and BDS/GPS multi frequencies（double frequencies or triple frequencies）,the success rate was over 98%;the precision of BDS/GPS was the highest when the ambiguity was fixed right,which was similar with the single GPS.But they were both slightly better than the single BDS;the frequency had no obvious influence on the precision.

关 键 词：BDS/GPS定向 多频 单历元 CLAMBDA 性能分析 

分 类 号：P228.4[天文地球—大地测量学与测量工程]