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首页> 外文期刊>Geoscience and Remote Sensing, IEEE Transactions on >Retrieval of Sea Surface Range Velocities From Envisat ASAR Doppler Centroid Measurements
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Retrieval of Sea Surface Range Velocities From Envisat ASAR Doppler Centroid Measurements

机译:通过Envisat ASAR多普勒质心测量反演海面速度

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摘要

The processing steps and error corrections needed to retrieve estimates of sea surface range Doppler velocities from Envisat Advanced Synthetic Aperture Radar Wide Swath Medium resolution image products are presented. Retrieval accuracies based on examination of the corrected Doppler shift measurements are assessed. The root-mean-square errors of the Doppler shift after bias corrections are found to be 4.7 and 3.9 Hz in VV and HH polarizations, respectively. At 35$^{circ}$ incidence angle, this corresponds to horizontal Doppler velocities of 23 and 19 cm/s.
机译:介绍了从Envisat高级合成孔径雷达宽幅中分辨率图像产品中检索海面多普勒速度估计值所需的处理步骤和错误校正。评估基于校正的多普勒频移测量值的检索准确性。偏差校正后的多普勒频移的均方根误差在VV和HH极化中分别为4.7 Hz和3.9 Hz。在35°的入射角下,这对应于23和19cm / s的水平多普勒速度。

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