| 基于X波段雷达海面波高估计的改进方法 |
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| 引用本文： | 段华敏,王剑.基于X波段雷达海面波高估计的改进方法[J].海洋通报,2009,28(2). |
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| 作者姓名： | 段华敏 王剑 |
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| 作者单位： | 中国海洋大学信息科学与工程学院,山东,青岛,266100 |
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| 基金项目： | 国家高技术研究发展计划(863计划) |
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| 摘 要： | 船用X波段导航雷达凹波形成的海杂波图像中包含丰富的海浪、海表层流信息.借鉴合成孔径雷达(SAR)估计有效波高的方法,假设有效波高与雷达回波强度信噪比的平方根成线性关系,可由X波段雷达图像估计得到海浪的有效波高.用此方法主要分析小麦岛海域实验数据,结果显示,直流滤波后计算的信噪比估计的有效波高比不进行直流滤波结果符合得好;而按波浪浮标测得有效波高数据的高低,分两段分别进行线性拟合获取校准系数,估测的有效波高更加准确.
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| 关 键 词： | X波段雷达 有效波高 直流滤波 线性拟合 |
An Improved Method on the Wave Height of Ocean Surface Based on X-Band Radars |
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| DUAN Huamin,WANG Jian.An Improved Method on the Wave Height of Ocean Surface Based on X-Band Radars[J].Marine Science Bulletin,2009,28(2). |
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| Authors: | DUAN Huamin WANG Jian |
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| Institution: | College of Information Science & Engineering;Ocean University of China;Qingdao 266100;Shandong;China |
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| Abstract: | It contains plenty of ocean wave and sea surface current information in the sea clutter images formed by X-band marine radar's echo.Applying the method to calculate the significant wave height from the SAR imagery,which supposes the significant wave height in linear relation with the square of the signal-to-noise ratio of radar images,the significant wave height can be obtained from the estimation of the images of X-band radar.We mostly analyzed the experimental data in the Small Mai-island sea area by this... |
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| Keywords: | X-band radar significant wave height direct current filtering linear fit |
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