中文摘要：

为避免用户使用不同GNSS在线数据处理系统可能具有的盲目性,提高系统在国内的利用率及应用价值,本文对国际上流行的AUSPOS、OPUS、APPS、CSRS和GAPS五个系统进行了对比分析。利用IGS测站进行算例测试,得出结果为：五个系统具有界面友好,定位精度高等特点;不同系统对数据量的要求存在差异;APPS和CSRS较GAPS、AUSPOS和OPUS精度高,X和Y方向均可达到mm级,且在不同纬度位置的测站的精度差异小;国外GNSS在线数据处理系统在我国测区范围内均可达到cm级定位精度。

英文摘要：

In order to avoid the possible blindness when the GNSS Online Data Processing Systems are used and improve their utilization and application value in GNSS positioning and other research aspects in domestic.The paper compared and analyzed the popular five systems,such as AUSPOS、OPUS、APPS、CSRS and GAPS.The conclusion was got by testing using IGS stations in the aspect of different feature,the demand of data sets,positioning mode and latitude.The five systems is friendly interfaced,easy-to-handle and high-precision.Different systems require different data sets.Compared with the AUSPOS and OPUS,the accuracy of APPS,CSRS and GAPS in precise point positioning is higher within cm in the direction of X,Y and Z and has tiny differences when the stations are in different latitude.The GNSS online data processing systems are within cm in our country and are valuable to the regional CORS online data processing.