HY-2A卫星高度计不同重跟踪方案对反演海浪有效波高的影响

被引:1
作者
李秀仲 [1 ]
何宜军 [1 ]
赵海峰 [2 ]
机构
[1] 南京信息工程大学海洋科学学院
[2] 江苏省地质测绘院
关键词
重跟踪; 理论回波模型; 偏度系数; 奇异值分解滤波; 有效波高;
D O I
暂无
中图分类号
P714.1 []; P716.22 [];
学科分类号
0816 ;
摘要
本文基于Amarouche的二阶理论回波模型,导出了带有偏度系数的二阶理论回波模型;针对HY-2A卫星高度计波形特点,引入了奇异值分解滤波,并根据最大似然估计算法反演参数的不同得到6种重跟踪方案;利用其中的五参数方案处理该波形数据,获得海面散射点高度概率密度函数中偏度的合理取值为0.15;将结果分别与浮标、Jason-1和HY-2AIDR有效波高对比,分析6种方案反演有效波高的准确度,确定了MLE4SVD(波形重跟踪之前进行滤波)对HY-2A高度计重跟踪更适合反演有效波高。
引用
收藏
页码:45 / 56
页数:12
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