无线电掩星反演大气参数误差分析及应用进展

ERROR SOURCE ANALYSIS ON INVERSION OF TERRESTRIAL ATMOSPHERIC PARAMETERS USING SPACEBORNE GPS RADIO OCCULTATION AND ITSPROGRESS

本文详细分析了影响空间GPS无线电掩星反演大气参数方法的主要误差源 ,其中包括信噪比误差 ,精密定轨误差 ,电离层模制误差 ,多路径效应和时钟改正等误差 .

The principle and error assessments are presented on the application of spaceborne GPS radio occultation to terrestrial atmosphere inversion. They include signal to noise ratio error, precision orbit determination error, ionospheric effect calibration error, multipath error and clock correction errors for GPS satellites and inflight GPS receiver. GPS/MET scientific results are summarized and a Taiwan US joint project, COSMIC, isintroduced, which might be one of the tentative and most competitive Earth observing systems. Domestic GPS occultationrelevant researches are also shortly reviewed.