略论海洋测高卫星GPS厘米级定轨的实施基础

On the Attainable Basic of Centimeter Level Orbit Determinations with GPS for Ocean Altimetry Satellites

基于对多种飞机的机载GPS测量实践,认为我国HY-2海洋二号卫星实现厘米级精度的星载GPS定轨测量的基础是:选择适合天线,捕获多颗在视GPS卫星;注重天线安装位置,减弱多路径效应影响;选择适合GPS信号接收机,确保星载GPS测量数据优质。

Based on airborne GPS measurement practice for some aircrafts,the author believes that the following three aspects can help achieving centimeter-level accuracy of satellite-borne GPS orbit determinations for Chinese HY-2 ocean altimetry satellite：selecting the appropriate antenna for capturing many GPS satellites in the visibility;focussing on the antenna installation location,so as to reduce multipath effects;selecting the appropriate GPS receiver for ensuring high-quality data of satellite-borne GPS measurements.