中文摘要：

为了解决高精度定位中的卫星轨道粗差判别问题，采用轨道积分方法和轨道拟合方法，重点分析了卫星精密星历SP3文件的轨道积分精度，利用对卫星轨道加入不同粗差的计算方案，讨论了轨道积分的精度以及其对定位的影响，研究了利用卫星轨道积分精度实现完备性监测的方法。结果表明：通过卫星轨道积分精度的方法，可以反映卫星的粗差信息并予以将粗差卫星剔除；当剔除粗差卫星后，精密单点定位精度提高；当对正常卫星加入粗差，且随着加入粗差的增大，卫星轨道积分精度越来越差。该成果对完备性监测的研究具有一定的参考价值和指导意义。

英文摘要：

In order to solve satellite orbit gross error in high precise positioning, based on the orbit integration and orbit fitting methods, with emphasis on analyzing the accuracy of orbit integration method about satellite precise ephemeris （sp3 file）, and the orbit integration accuracy was discussed and its impact on positioning by adding different error to satellite orbit, integrity monitoring method is studied by using satellite orbit integration accuracy. The results show that satellite orbit integration can reflect gross error information and eliminate the satellite with gross error so that it can improve the accuracy of precise point positioning; when adding gross error on the normal satellite, the accuracy of satellite orbit integration will become lower with the error larger. The results have a certain reference value and the guide meaning for the research of integrity monitoring.