中国工程科学Issue(7)：62-67,6.
海洋二号卫星微波散射计数据预处理技术研究
Research on the preprocessing of HY-2A space-borne scatterometer data
摘要
Abstract
This paper describes the key technologies involved in the scatterometer data preprocessing, which include the geometric positioning algorithm and the radar backscatter coefficient calculation algorithm. The geometric positioning of space-borne scatterometer data is a process of obtaining the coordination of measur-ing pulse,which needs to consider the instrument scan geometry,spatial location,antenna pointing,earth cur-vature,rotation,and other factors. The traditional method of geometric positioning of space-borne scatterometer data depends on the satellite ephemeris with a low positioning accuracy. HY-2A satellite is equipped with a global positioning system(GPS)sensor to provide the location of the satellite platform with 1 s interval. Accordingly, the geometric relationship between sensor observation and ground surface can be established. The geographic co-ordination of the observation cell center,observation azimuth angle and incidence angle can be determined using this geometric relationship. The radar backscatter coefficient is calculated with a parameter substitution method.关键词
HY-2A卫星/微波散射计/预处理Key words
HY-2A satellite/microwave scatterometer/preprocessing分类
信息技术与安全科学引用本文复制引用
张毅,林明森,宋清涛,解学通,邹巨洪..海洋二号卫星微波散射计数据预处理技术研究[J].中国工程科学,2013,(7):62-67,6.基金项目
国家海洋局青年基金项目；海洋公益项目（201105032，201305032）；航天关键技术预先研究项目；国家自然科学基金面上项目 （）
