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介绍了中国地壳运动观测网络的布设、基准站和基本站首期观测情况。利用 GAMIT和GL OBK软件对首期观测数据进行了处理 ,计算结果归算到 ITRF97框架上。单天整体解结果表明 :基线重复性 NS向分量为 2 .2 8+0 .87× 1 0 - 9×S,EW向分量为 3.67+0 .82× 1 0 - 9×S,高程分量为 6.84+1 .2 9× 1 0 - 9×S(S为 GPS站间距离 ,以 mm为单位 )。对基准网和基本网的整体平差结果表明 :点位精度水平分量为 2～ 3mm,高程分量为 3～ 5mm,基准网和基本网首期观测达到了设计要求
This paper introduces the layout of the crustal movement observation network in China, the first observation of the base stations and the basic stations. The first observation data was processed using GAMIT and GL OBK software and the results were reduced to the ITRF97 framework. The results of a single day overall solution show that the baseline NS component is 2.28 + 0.87 × 10-9 × S, the EW component is 3.67 + 0.82 × 10-9 × S, and the elevation component is 6.84 + 1 .2 9 × 1 0 - 9 × S (S is the distance between GPS stations in mm). The overall adjustment results for the base network and the basic network show that the horizontal component of point accuracy is 2 ~ 3mm and the elevation component is 3 ~ 5mm. The first phase of the base network and the base network meet the design requirements