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本文阐述了塔里木盆地卫星定位网的外业资料采集、数据处理、整体平差及卫星定位网地心坐标系与80坐标系、新54坐标系联合平差的精度。表明天文大地网相对于卫星定位网来说,含有系统误差,且越向西北,尺度比因子变化越大。认为塔里木盆地今后开展卫星定位时,地心坐标转换应使用七参数为宜;当联测距在500km以内,现场卫星有效通过不低于25次,可望达到1-2m的定位精度。
In this paper, the accuracy of the joint adjustment of geodetic data collection, data processing, overall adjustment and geodetic coordinate system of the satellite positioning network in Tarim Basin with the 80-coordinate system and the new 54-coordinate system is described. Astronomical geodesic network relative to the satellite positioning network that contains systematic errors, and the more to the northwest, the greater the scale factor changes. When considering satellite positioning in the Tarim Basin in the future, seven parameters should be used for geocentric coordinate conversion. When the joint detection distance is within 500km, the effective passing of the satellite in the field is not less than 25 times, and the positioning accuracy of 1-2m can be expected.