基于三级GNSS大地控制网同步环闭合差超限的分析  

Analysis on the Transfinite of the Three GNSS Geodetic Control Network Synchronization Loop Closure

作　　者：汤虎 张前恩 

机构地区：[1]61287部队

出　　处：《北京测绘》2015年第6期34-37,12,共5页Beijing Surveying and Mapping

摘　　要：通过我部近年来执行三级GNSS大地控制网GNSS静态测量任务中出现的同步环闭合差超限情况做以分析,通过比较探讨发现,凡是闭合差不满足限差要求的点组,测站间高差都很大,点组间这种过大的高差使基线解算质量明显受到对流层改正残差的影响,从而增大了环闭合差。This article discusses on the transfinite for synchronous loop closureerror of GNSS static measurement through our ministry of implementation of level three GNSS Geodetic Control Network in recent years . When height difference of stations is too large ,All the closure of every point group does not comply with the error limit. Too much height difference between the point groups causes that tropospheric correction residuals influences the baseline solution quality, accordingly Increases the loop closure.

关 键 词：GNSS 高差 双差观测方程 对流层延迟改正残差 同步环闭合差 

分 类 号：P221[天文地球—大地测量学与测量工程]