基于GAMIT10.61的高精度GPS／BDS数据处理及精度对比分析

High Precision GPS／BDS Data Processing and Precision Contrast Analysis Based on GAMIT10.61

摘要: 本文利用GAMIT10.61软件对重庆8个CORS站GPS数据和BDS数据进行处理,并从基线重复性、单日解时间序列、联合解平差等三个方面对GPS和BDS解算结果进行对比分析.结果表明，GPS解算结果整体优于BDS,且单BDS解与单GPS解在水平方向差值小于0.7 cm,高程方向差值在1～3 cm;基于GAMIT 10.61的BDS基线解算重复性在南北方向上1.39 mm+0.205 mm×10 ^-8,东西方向上为3.10 mm+0.252×10^-8,高程方向上为7.81 mm+2.001×10^-8,基线长度方向上2.13 mm+0.384×10^-8,解算精度能满足高精度数据处理要求.

Abstract: The paper deals with the GPS data and BDS data of eight station CORS in Chongqing using GAMIT10.61 software, and mainly from the baseline repeatability, coordinate time series, combined adjustment in three aspects analyzed the calculation results of GPS and BDS.Results show that GPS results is better than BDS, and the difference between the single BDS and single GPS solution in the horizontal direction is less than 0.7cm, and 1cm～3 cm in the vertical; the BDS baseline repeatability is 1.39mm+0.205mm×10^-8 in the north-south direction, 3.10mm+0.252×10^-8in the east-west direction, 7.81mm+2.001×10^-8in the vertical direction, 2.13mm+0.384×10^-8 in the baseline length, calculation precision can meet the high precision data processing requirements using GAMIT 10.61.