GAMIT数据处理中基线解算模式的对比分析  

Comparative Analysis of Baseline Solution Based on GAMIT Data Processing

作　　者：杨登科[1] 安向东[2] 汤勰 

机构地区：[1]武汉大学测绘学院,湖北武汉430079 [2]武汉大学卫星导航定位技术研究中心,湖北武汉430079 [3]中国矿业大学,北京100083

出　　处：《测绘地理信息》2016年第2期18-21,共4页Journal of Geomatics

基　　金：国家自然科学基金资助项目(41374033)~~

摘　　要：BASELINE和RELAX是GAMIT软件中两种高精度的基线解算模式。为分析这两种基线解算模式在不同基线长度中的解算效果,并确定其适用范围,选择长度均在特定范围内的基线组成同步闭合环,应用两种处理模式BASELINE、RELAX进行基线向量解算,以标准化的均方根误差(NRMS)、基线重复性、基线较差等指标对结果进行比较分析。结果表明,中、短基线(<100km)时,两种处理模式差别不大;长基线(>100km)时,BASELINE解算效果较好。BASELINE and RELAX are both high-precision baseline solutions in GAMIT software.The aim of analyzing the results of these two baseline solutions with different baseline lengths is to determine the scope of their application.We select the baseline length within a specific range of synchronous closed loop,and employ these two baseline solutions to solve baseline vectors.It can be concluded that the results of BASELINE and RELAX are similar when the baseline is not long enough（〈100km）,while the result of BASELINE is better when the baseline is very long（〉100km）.

关 键 词：GAMIT 基线解算模式 同步闭合环 

分 类 号：P228.41[天文地球—大地测量学与测量工程]