基于S波段多普勒雷达的海风信息提取  

Sea Wind Information Extraction Based on S-band Doppler Radar

作　　者：何晨阳[1] 陈泽宗[1,2] 赵晨[1] 谢飞[1] HE Chenyang;CHEN Zezong;ZHAO Chen;XIE Fei(School of Electronic and Information, Wuhan University, Wuhan 430072, Hubei, China;Collaborative Innovation Center for Geospatial Technology, Wuhan University, Wuhan 430072, Hubei, China)

机构地区：[1]武汉大学电子信息学院,湖北武汉430072 [2]武汉大学地球空间信息技术协同创新中心,湖北武汉430072

出　　处：《武汉大学学报（理学版）》2018年第3期278-282,共5页Journal of Wuhan University:Natural Science Edition

基　　金：国家自然科学基金(41376182,41506201);国家重点研发计划课题(2016YFC1400504)项目;湖北省科技支撑计划项目(2014BEC057)资助

摘　　要：针对雷达遥测方式测量海面风信息精度不高的问题,基于S波段多普勒雷达系统,提出了一种海风信息的反演算法.该算法首先利用二维有向海浪谱提取风向,然后把雷达获取的海浪参数代入经验公式得到风速,运用非线性最小二乘法的谱拟合法计算风区,最后将雷达实测数据提取的风信息与风速风向仪结果进行对比,结果表明两者数值接近,误差较小.For the low accuracy of the measurement of sea surface wind information through radar remote sensing technology,an algorithm is proposed based on the S-band Doppler radar system.The proposed algorithm firstly utilizes the two-dimensional wave spectrum to extract the wind direction.Then it substitutes the wave parameters obtained from the radar into the empirical formula to obtain the wind speed and finally uses the nonlinear least square method to calculate the fetch by fitting wave spectrum.Compared with the measured data,the results show that the values have the advantages of higher accuracy and less errors.

关 键 词：风信息提取 多普勒雷达 海浪谱 最小二乘法 实测数据 

分 类 号：TN958.95[电子电信—信号与信息处理]