应用虚拟基准站(VRS)技术提高测控系统精度

Improving the Measurement Accuracy of TT&C Systems Using Virtual Reference Stations

虚拟基准站 VRS( Virtual Reference Stations)技术是国外近年发展起来的一项新的 GPS差分技术 ,它综合利用多个基准站的测量信息 ,经过精确的误差修正 ,产生一随用户运动的基准站。始终与用户构成短基线差分 ,该技术有效提高了 GPS差分定位的精度 ,并具有获得高精度解的可靠性。文中分析虚拟基准站的原理与关键技术 ,提供部分试验结果 ,对测控系统利用

The VRS(Virtual Reference Stations)is a new differential GPS technology developed in recent years.It synthesizes the informations of multiple reference stations and stringently corrects errors,and then creates a reference station data that simulates a reference station near by the positioned receiver.This virtual reference station will provide a short baseline performance to the user,so it can effectively improve the differential GPS positioning accuracy and the reliability of high-precision solutions.The VRS principles with its key techniques are analyzed in this paper.Some test results are also provided.The engineering feasibility of VRS in TT&C (Tracking Telemetry and Telecommunications systems)is discussed.