【摘要】 通过对我国4个IGS站上的数据给予不同的初始坐标来解算基线的实验,发现Bernese软件对未知点的初始坐标的精度要求不像GAM IT那么高,当未知点初始坐标达到1 000 m的误差时,经过迭代解算仍然可以得到正确的基线结果,而GAM IT要正确解算基线,初始坐标误差不能超过20 m.建议用Bernese软件进行计算时,最好进行一次以上迭代计算;当用GAM IT处理含有昆明站的数据时,昆明站的初始坐标不能使用观测数据文件中给的初始坐标.更多还原

【Abstract】 Experiments with the GAMIT and Bernese software to process the data of the four tracking stations of IGS were performed and found different approximate coordinate to the stations.Firstly,Bernese needs lower precision of the unknown stations than the GAMIT software,when the error of the origin coordinate is about 1 000 kilometers.The right baseline can be obtained with Bernese in a few iterative process,whereas with GAMIT the error of the approximate coordinate won′t be larger than 20 meters.Secondly,when with the Bernese software to process the data,it has better iterate at least one time.Thirdly,when processing the data including the KUNM station with the GAMIT,the origin coordinate of the KUNM station can′t be obtained from the observation file,or it will fail.更多还原