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首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Directional ocean wave measurements in a coastal setting using a focused array imaging radar
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Directional ocean wave measurements in a coastal setting using a focused array imaging radar

机译:使用聚焦阵列成像雷达在沿海环境中进行定向海浪测量

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摘要

A unique focused array imaging Doppler radar was used to measure directional spectra of ocean surface waves in a nearshore experiment performed on the North Carolina Outer Banks. Radar images of the ocean surface's Doppler velocity were used to generate two dimensional spectra of the radial component of the ocean surface velocity field. These are compared to simultaneous in-situ measurements made by a nearby array of submerged pressure sensors. Analysis of the resulting two-dimensional spectra include comparisons of dominant wave lengths, wave directions, and wave energy accounting for relative differences in water depth at the measurement locations. Limited estimates of the two-dimensional surface displacement spectrum are derived from the radar data. The radar measurements are analagous to those of interferometric synthetic aperture radars (INSAR), and the equivalent INSAR parameters are shown. The agreement between the remote and in-situ measurements suggests that an imaging Doppler radar is effective for these wave measurements at near grazing incidence angles.
机译:在北卡罗莱纳州外河岸进行的近岸实验中,使用了独特的聚焦阵列成像多普勒雷达来测量海洋表面波的定向光谱。海洋表面多普勒速度的雷达图像用于生成海洋表面速度场的径向分量的二维光谱。将这些与附近一系列浸入式压力传感器进行的实时原位测量进行比较。对所得二维光谱的分析包括对主要波长,波方向和波能的比较,以解释测量位置水深的相对差异。二维表面位移谱的有限估计是从雷达数据中得出的。雷达测量与干涉式合成孔径雷达(INSAR)的测量类似,并显示了等效的INSAR参数。远程和现场测量之间的一致性表明,成像多普勒雷达在接近掠入射角的情况下对于这些波测量是有效的。

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