On the Discrimination of Radar Signatures of Atmospheric Gravity Waves and Oceanic Internal Waves on Synthetic Aperture Radar Images of the Sea Surface
On the Discrimination of Radar Signatures of Atmospheric Gravity Waves and Oceanic Internal Waves on Synthetic Aperture Radar Images of the Sea Surface
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DOI：
10.1109/tgrs.2010.2072930
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发表时间：
2011-03
影响因子：
8.2
通讯作者：
W. Alpers;Weigen Huang
中科院分区：
文献类型：
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作者：
W. Alpers;Weigen Huang
在海洋上空获得的合成孔径雷达（SAR）图像经常显示海浪样图案，其波长远高于海洋表面波的波长，是海洋内波或大气重力波的海面特征。然而，通常很难确定它们是由第一种还是第二种海浪引起的，这导致许多调查人员误解了海面的SAR图像。基于孤立波和雷达成像理论，我们提出了有助于区分它们的标准。然而，在某些情况下，这些标准仅仅基于SAR图像上可见的特征的形状和结构，产生模糊的结果。在这些情况下，必须求助于本文列出的关于agw和OIWs产生的附加信息。
Synthetic aperture radar (SAR) images acquired over the ocean frequently show sea wave-like patterns that have wavelengths well above those of ocean surface waves and that are sea surface signatures of oceanic internal waves (OIWs) or of atmospheric gravity waves (AGWs). However, it is often difficult to decide whether they result from the first or the second kind of waves, which has led many investigators to misinterpret SAR images of the sea surface. Based on solitary wave and radar imaging theories of AGWs and OIWs, we present criteria that help distinguish between them. However, there are cases where these criteria, which are based solely on the shape and structure of the features visible on the SAR images, yield ambiguous results. In these cases, one must resort to additional information on the generation of AGWs and OIWs, which are listed in this paper.