基于X波段航海雷达的海面风场反演技术研究  

Inversion of Wind Parameters from X-band Marine Radar Images

作　　者：王海霞[1] 徐进[1] 王庆名 陈丽 庞玺斌 WANG Haixia;XU Jin;WANG Qingming;CHEN Li;PANG Xibin(Navigation College,Dalian Maritime University,Dalian 116026,China;Alumni Affairs and Cooperation Office,Dalian Maritime University,Dalian 116026,China)

机构地区：[1]大连海事大学航海学院,辽宁大连116026 [2]大连海事大学校友事务与合作处,辽宁大连116026

出　　处：《无线电工程》2019年第6期467-470,共4页Radio Engineering

基　　金：国家自然科学基金资助项目(51709031);辽宁省博士启动基金资助项目(201601069;20170520163);中央高校基本科研业务费专项基金资助项目(3132018145;3132018149);2018年教育部第一批产学合作协同育人项目(201801290006)

摘　　要：以大连海事大学教学实习船"育鲲"轮采集的航海雷达原始数据为基础,基于梯度网络算法进行风场反演。依据雷达成像原理和雷达回波影响因素,利用图像求和及中值滤波法对雷达图像预处理,增强海浪信息所在位置的灰度强度,降低同频干扰和尾迹效应;运用梯度算法,求得梯度加权直方图,并根据梯度变化最大方向与风向的垂直关系,生成主风向。计算结果与大连气象台实测的风向对比,吻合度较高。Based on the original radar image collected by the teaching ship Yukun of Dalian Maritime University,the gradient algorithm is used for wind field inversion.According to the principle of radar imaging and the influencing factors of radar echo,the radar image is preprocessed by image summation and median filtering to enhance the gray intensity of the sea wave information and reduce the co-frequency interference.The gradient weighted histogram is obtained by using gradient algorithm,and the main wind direction is generated according to the vertical relationship between the maximum direction of gradient change and the wind direction.The calculated results are in good agreement with the measured wind direction and velocity at Dalian Meteorological Station.

关 键 词：航海雷达 图像处理 梯度法 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术]