GPS软件接收机中载波相位测量的实现  

Implementation of Carrier Phase Measurements in GPS Software Receivers

作　　者：国佳[1] 张彦仲[1] 邵定蓉[1] 李署坚[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100191

出　　处：《遥测遥控》2011年第5期37-42,共6页Journal of Telemetry,Tracking and Command

摘　　要：GPS接收机载波相位测量的精度优于码相位测量,但却存在整周模糊度。利用码和载波相位测量的组合可以提高伪距的精度,进而改善接收机的定位性能。研究GPS软件接收机中载波相位测量的实现方法。通过处理实际采集的信号,分析码和载波相位测量组合方法的性能。实验结果表明,通过50 s的平滑,伪距误差可以减小到毫米量级。In GPS receivers,carrier phase measurements are much more precise than that of code phase,but contain the integer ambiguity.Combination of measurements of code phase and carrier phase can improve the precision of pseudorange and the positioning performance of the receivers.The implementation method of carrier phase measurements in GPS software receivers is studied in this paper.The performance of combination of measurements of code phase and carrier phase is analyzed through processing of collected signals.Experimental results indicate that the error of pseudorange can be reduced to the order of millimeter by smoothing 50 seconds of data.

关 键 词：全球定位系统(GPS) 软件接收机 码相位测量 载波相位测量 整周模糊度 

分 类 号：P228.4[天文地球—大地测量学与测量工程]