中文摘要：

基于网络的在线GPS定位服务系统提高了测量精度和作业效率，极大地方便了用户。AUSPOS是澳大利亚有关专业部门开发的在线定位服务系统，具备处理静态双频接收机RINEX格式的GPS数据的能力。试算表明：AUSPOS使用2h的数据便能获得cm级的定位精度（3D），8h就可以获得水平方向优于1cm和垂直方向优于2cm的定位精度。利用24h的观测数据可以获得mm级的内符合精度和1cm左右的外符合精度。AUSPOS这类高性能在线定位服务系统在GPS基准站建设、GPS高程测量和GPS控制网解算等领域有着很大的实际应用价值。

英文摘要：

Web-based online GPS positioning service systems not only improve the survey precision and field efficiency, but also give a lot convenient to GPS users. AUSPOS is such a system developed by related department of Australia, which can statically solve the RINEX GPS data. This paper analyzed AUSPOS＇s positioning precision through true tests in detail. The analyzed results indicated that AUS- POS can get centimeter precision （3D） using 2 hours of observation data, and 8 hours of data gave coordinates to better than lcm horizontally and better than 2cm in the vertical. Such online positioning service systems have great practical value to the GPS reference station positioning, high accuracy vertical GPS positioning and GPS network quality control.