微波多普勒雷达海浪参数提取算法  

Inverse algorithm of ocean wave parameters for microwave Doppler radars

作　　者：范林刚[1] 陈泽宗[1] 金燕[1] 赵晨[1] 

机构地区：[1]武汉大学电子信息学院,湖北武汉430072

出　　处：《华中科技大学学报（自然科学版）》2012年第10期21-24,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：海洋公益性行业科研专项重大项目(201205032);国家高技术研究发展计划重大项目(2006AA09A303);国家自然科学基金资助项目(40976105);中央高校基本科研业务费专项资金资助项目(114003;20082120101000039;20102120201000125)

摘　　要：根据海浪混合表面散射理论和线性波理论,利用3种规模波对微波多普勒谱的不同贡献,推导出海浪谱与径向速度转换函数,得到了一种适用于多普勒雷达的海浪谱以及海浪参数提取算法.该算法从海洋回波的多普勒谱中获取径向速度序列,根据海浪速度谱与海浪谱之间的转换关系推导海浪谱,再用谱矩法计算相应的海浪参数.运用该算法分别对微波多普勒谱雷达的模拟与实测数据进行处理,实现了有效浪高和平均海浪周期的高精度提取,证实了该算法在微波段多普勒雷达的海浪参数反演中的准确性.An algorithm was presented to deduce the ocean wave spectrum and parameters for micro- wave Doppler radars. According to the composite surface scatter theory, three different scale waves dominate in microwave radar backscatters. Depending on the contributions of large, intermediate and small scale waves, ocean wave spectrum was deduced from the radial velocity series which are corre- sponding to the center of Doppler spectra. Wave parameters such as significant wave height and aver- age period were calculated by the moment method. The algorithm was used to deal with the simulated Doppler spectra and previous measured radar data. The results show that this algorithm is a promising method to measure ocean wave for coherent microwave radars.

关 键 词：微波传感器 海洋学 多普勒雷达 海浪谱 海浪参数 提取算法 

分 类 号：TN95[电子电信—信号与信息处理]