新版GAMIT10.70解算GPS/BDS基线精度对比分析
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摘要
为了进一步验证新版GAMIT软件解算BDS/GPS数据的精度,对BDS、GPS数据基线进行解算分析:利用多模GNSS实验跟踪网提供的中国及其周边的6个MGEX站数据分别进行BDS、GPS数据基线解算,并以标准化均方根误差(NRMS)、基线重复性等为判断指标对基线解算结果进行分析。实验结果表明:进行高精度基线解算时,BDS、GPS基线解算结果 NRMS值均优于高精度基线解算要求(NRMS<0.3);N、E、U分方向上BDS基线解算结果基线长度小于1 000 km的情况为:当基线较长时,GPS基线解算精度优于BDS基线解算结果;BDS基线重复性均大于GPS,且当基线较短时,BDS和GPS的基线向量相对重复性均出现偏大现象。
In order to further verify the solution accuracy of the GAMIT software of new version for BDS/GPS data, the paper calculated and analyzed the BDS/GPS baseline data: the data of six MGEX stations in China and its surrounding areas provided by multi-mode GNSS experimental tracking network were used to calculate the baseline data of BDS and GPS data respectively, and the normalized root mean square(NRMS) and baseline repeatability were utilized as the judgment indicators of the baseline solution results. Experimental result showed that: the NRMS values of BDS and GPS baseline solution would be both better than the requirements of high-precise baseline solution(NRMS<0.3); the BDS baseline solution results for N, E and U directions would apply to the case when the baseline length is less than 1 000 km, while when the baseline is longer, the baseline solution accuracy of GPS would be better than that of BDS; the baseline repeatability of BDS would be greater than that of GPS, and when the baseline is relatively short, the relative repeatability of the baseline vectors of BDS and GPS would both be large.
In order to further verify the solution accuracy of the GAMIT software of new version for BDS/GPS data, the paper calculated and analyzed the BDS/GPS baseline data: the data of six MGEX stations in China and its surrounding areas provided by multi-mode GNSS experimental tracking network were used to calculate the baseline data of BDS and GPS data respectively, and the normalized root mean square(NRMS) and baseline repeatability were utilized as the judgment indicators of the baseline solution results. Experimental result showed that: the NRMS values of BDS and GPS baseline solution would be both better than the requirements of high-precise baseline solution(NRMS<0.3); the BDS baseline solution results for N, E and U directions would apply to the case when the baseline length is less than 1 000 km, while when the baseline is longer, the baseline solution accuracy of GPS would be better than that of BDS; the baseline repeatability of BDS would be greater than that of GPS, and when the baseline is relatively short, the relative repeatability of the baseline vectors of BDS and GPS would both be large.
引文
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[11]郑二龙,伍吉仓,毕元,等.基于GAMIT高精度数据处理及精度分析[J].工程勘察, 2015, 43(11):55-58, 82.
[12]王超,郭际明,周命端,等.高精度GPS数据处理中GAMIT批处理方法与实现[J].测绘信息与工程, 2012, 37(2):10-12.
[13]李征航,张小红.卫星导航定位新技术及高精度数据处理方法[M].武汉:武汉大学出版社, 2013:146-176.
[14]姜卫平. GNSS基准站网数据处理方法与应用[M].武汉:武汉大学出版社, 2017:21-71.
[15]姜卫平.卫星导航定位基准站网的发展现状、机遇与挑战[J].测绘学报, 2017, 46(10):1379-1388.
[2]王阅兵,甘卫军,陈为涛,等.北斗导航系统精密单点定位在地壳运动监测中的应用分析[J].测绘学报,2018,47(1):48-56.
[3]聂兆生,熊维,黄勇.湖北地区现今地壳运动的GPS监测与分析[J].大地测量与地球动力学,2016,36(10):922-926.
[4]瞿伟,王运生,张勤,等.空间大地测量GPS揭示的汾渭盆地及其邻域现今地壳应变场变化特征[J].地球物理学报, 2016, 59(3):828-839.
[5]李森,张凤录,陈积旭,等.大气改正模型对精密GPS数据处理的影响分析[J].测绘通报, 2016(增刊2):53-55, 95.
[6]杨登科,安向东,汤勰. GAMIT数据处理中基线解算模式的对比分析[J].测绘地理信息, 2016, 41(2):18-21.
[7]高旺,高成发,潘树国,等.基于快速星历的GAMIT高精度基线解算研究[J].测绘科学, 2015, 40(2):22-25, 38.
[8]罗权.不同截止高度角对GAMIT基线解算的影响分析[J].测绘地理信息, 2017, 42(3):14-17.
[9]王树东,万军.不同星历的GAMIT高精度基线解算[J].导航定位学报, 2018, 6(1):103-107.
[10]李星光,郑南山.参数设置对高精度GPS数据解算的影响探讨[J].测绘科学, 2015, 40(1):33-37, 51.
[11]郑二龙,伍吉仓,毕元,等.基于GAMIT高精度数据处理及精度分析[J].工程勘察, 2015, 43(11):55-58, 82.
[12]王超,郭际明,周命端,等.高精度GPS数据处理中GAMIT批处理方法与实现[J].测绘信息与工程, 2012, 37(2):10-12.
[13]李征航,张小红.卫星导航定位新技术及高精度数据处理方法[M].武汉:武汉大学出版社, 2013:146-176.
[14]姜卫平. GNSS基准站网数据处理方法与应用[M].武汉:武汉大学出版社, 2017:21-71.
[15]姜卫平.卫星导航定位基准站网的发展现状、机遇与挑战[J].测绘学报, 2017, 46(10):1379-1388.
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