【摘要】 本文分析了雷达高度计在天线误指向角较大的情况下,目前常用的回波模型存在的主要问题.提出了一个带有偏斜度系数的雷达高度计二阶回波模型,该模型适用于大误指向角情况下的回波重跟踪处理.本文利用该模型对HY-2A卫星雷达高度计的回波数据进行了处理,并将处理结果与NDBC(National Data Buoy Center)的海洋浮标观测数据做了比较,获得了比现有模型更好的结果.更多还原

【Abstract】 The main problem of the conventional radar altimeter echo model for big antenna mispointing angle is analyzed, and then an echo model containing the sea surface skewness coefficient is derived.This echo model can be used for retracking the echo wave when the antenna mispointing angle is big.Finally, the model is used to process the data of the HY-2A radar altimeter during the stage of adjusting satellite attitude, and the results are compared with the measurements of the buoys of NDBC( National Data Buoy Center).It shows that the model can give more accurate results.更多还原