摘要
船用X波段导航雷达海杂波图像中包含有丰富的海浪、海面流和风场等环境信息。阵风的运动在滤波后的雷达图像序列中是可见的,根据分析阵风的运动,用基于运动估计技术的光流方法从阵风的运动中测定风矢量。文章主要分析了小麦岛海域岸基试验的海杂波数据,将用雷达图像序列提取的风矢量和现场风速仪、风向标测得的风矢量做了比较,证明了光流运动估计技术提取高分率风场的可行性。
It contains plenty of ocean wave, sea surface current and wind fields information in the sea clutter images formed by X- band marine radar＇s echo. The movement of wind gust is visible in radar image sequences after filtering, wind vectors are determined using a optical flow based motion estimation technique. The experimental data in the Small Mai-island sea area are analyzed, wind vectors retrieved from radar image sequences are then compared with wind vectors determined by anemometer and vane mounted at the same location. It is proved that using the optical flow motion estimation technique to retrieve high-resolution wind fields is feasible.
出处
《海洋技术》
北大核心
2010年第3期5-8,共4页
Ocean Technology
基金
国家高技术研究发展计划(863计划)资助项目(2006AA09A305)
关键词
X波段雷达
海杂波
风矢量
光流
X-band radar
sea clutter
wind vector
optical flow
