帕米尔高原现代地壳运动首期GPS观测及处理  

Data Procession and the First Epoch GPS Survey of Recent Crustal Movement in Pamirs Plateau

作　　者：潘正洋[1,2] 何建坤[1] 卢双疆[1,2] 

机构地区：[1]中国科学院青藏高原研究所大陆碰撞与高原隆升重点实验室,北京100101 [2]中国科学院大学,北京100049

出　　处：《地球科学与环境学报》2013年第1期103-110,共8页Journal of Earth Sciences and Environment

基　　金：国家自然科学基金重点项目(41030320);中国科学院知识创新工程重要方向项目(KZCXZ-EW-116)

摘　　要：介绍了在帕米尔高原进行全球定位系统(GPS)观测的剖面布设和首期观测情况,详细描述了GAMIT/GLOBK软件的处理流程,对研究区域首期GPS观测数据进行处理,并将结果归算到ITRF08参考框架下,GAMIT计算得到的准观测值均满足结果需要的精度,其中单天解标准化均方差都小于0.3mm,最好站点的单程均方根残差处于3～5mm,最差站点的单程均方根残差处于7～9mm,满足GAMIT结算的预期结果。GLOBK在ITRF08参考框架下对GAMIT的单天解联合全球解一起结算,并且对处理结果及其误差进行分析与研究,得到GPS站点的精确坐标。结果表明:所有站点的点位精度水平分量为1～2mm,高程分量为3～7mm,达到帕米尔地区GPS观测预期的设计要求。这对于研究帕米尔高原运动学特征及探讨青藏高原的隆升机制具有重要意义。The layout of profile and the first epoch GPS survey in Pamirs Plateau were introduced, the data processing by the software GAMIT/GLOBK was described in detail. The GPS observational data in the study area were processed and the results were calculated under the reference frame ITRF08. The quasi-observation calculated by GAMIT met the precision criteria, all the normalized RMS of day solution were less than 0.2 mm, the single RMS residuals of the best sites were 3-5 mm, and the residuals of the worst sites were 7-9 mm, so that the above was coincidence with the expected results calculated by GAMIT. The global solution combined with day solutions together was calculated by GLOBK under the reference frame ITRF08, and the processed results including error were analyzed and studied in order to get the exact coordinates of the GPS sites. The results showed that the horizontal components of coordinate precision for all the sites were 1-2 mm, and the vertical components were 3-7 mm, so the designed requirement of GPS survey in Pamir Plateau was acceptable. It is of great significance for the kinematic characteristic of Pamirs Plateau and uplift mechanism of Tibet Plateau.

关 键 词：地壳运动 全球定位系统 GAMIT GLOBK软件 ITRF08参考框架 单天解 全球解 帕米尔 

分 类 号：P228[天文地球—大地测量学与测量工程]