实现海洋测高卫星厘米级定轨精度的策略分析

On the Attainable Tactics of Centimeter Level Orbit Determinations for Ocean Altimetry Satellites

基于对多种飞机的机载GPS测量实践,提出我国海洋二号(HY-2)卫星实现厘米级精度的星载GPS定轨测量的基本要求:1)选择适合天线,捕获多颗在视GPS卫星;2)注重天线安装位置,减弱多路径效应影响;3)选用适合的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 aircraft,this paper advances that the following three aspects to achieve centimeter-level accuracy of satellite-borne GPS orbit determinations for Chinese HY-2 ocean altimetry satellite：first,to select the appropriate antenna for capturing many GPS satellites in the visibility;secondly,to focus on the antenna installation location,so as to reduce multipath effects;thirdly,to select the appropriate GPS receiver for ensuring high-quality data of satellite-borne GPS measurements.