基于准最大似然估计的星载海洋雷达高度计跟踪器的实现及机载试验验证  

The Realization and Airborne Flight Experiment Verification for the Tracker of the Spaceborne Ocean Radar Altimeter Based on Sub-Optimal Maximum Likelihood Estimation

作　　者：许可[1] 刘和光[1] 

机构地区：[1]中国科学院空间科学与应用研究中心,北京100080

出　　处：《电子学报》2004年第6期929-932,共4页Acta Electronica Sinica

基　　金：国家 8 63计划项目

摘　　要：在轨实时跟踪处理是海洋雷达高度计的关键环节 ,本文系统地研究了应用于海洋雷达高度计跟踪器的最大似然估计算法的原理、算法误差分析、以及α β滤波器的工作机理 .在此基础上研制了基于准最大似然算法的星载海洋雷达高度计跟踪器 ,该跟踪器在机载飞行试验中获得了成功 ,在国内首次获得了基于准最大似然算法的海洋回波曲线 。Real-time tracking plays a key roll for ocean radar altimeter (RA).In this paper,the maximum likelihood estimation (MLE) algorithm for RA is studied,including the scheme,the errors,and the realization.The α-β filter is also analyzed.A tracker for spaceborne RA based on sub-optimal maximum likelihood estimation (SMLE) was developed,and by which a lot of ocean echo signal curves were obtained successfully in the airborne flight experiment.This was the first time for China to obtain ocean echo signal curves based on SMLE,and it was a great step for China to develop spaceborne RA.

关 键 词：雷达高度计 最大似然估计算法 跟踪器 

分 类 号：TN953[电子电信—信号与信息处理]