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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >A Simple Model for Marine Radar Images of the Ocean Surface
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A Simple Model for Marine Radar Images of the Ocean Surface

机译：海洋表面海洋雷达图像的简单模型

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摘要

This letter describes a simple model for the backscattered signal received from the ocean surface by a horizontal-polarization marine radar operating at low grazing angles, including the effects of the logarithmic amplifiers conventionally used in these radars. Shadowing is accounted for via geometric optics. The range dependence of the mean radar signal predicted by this model compares well with that observed in two marine radar data sets collected under different environmental conditions. The model also indicates that the radar signal modulation (the deviation from the mean normalized by the mean) is proportional to the radial component of the surface slope in unshadowed regions. This suggests the possibility of direct quantitative wave observations using marine radar modulation data, without the need for calibration.
机译：这封信描述了一个由低极化角工作的水平极化海洋雷达从海面接收到的反向散射信号的简单模型，包括这些雷达中常规使用的对数放大器的影响。阴影通过几何光学解决。该模型预测的平均雷达信号的距离相关性与在不同环境条件下收集的两个海洋雷达数据集中观察到的相关性很好。该模型还表明，雷达信号调制（通过均值归一化的均值偏差）与无阴影区域中表面坡度的径向分量成比例。这表明可以使用船用雷达调制数据直接进行定量波观测，而无需进行校准。

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