Depth inversion in coastal water based on SAR image of waves |
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| Authors: | Kaiguo Fan Weigen Huang Mingxia He Bin Fu Biao Zhang Xiaoyan Chen |
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| Institution: | [1]State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, Hangzhou 310012, China [2]Key Laboratory of Ocean Remote Sensing, Ministry, of Education, Ocean University of China, Qingdao 266003, China [3]Institute ofOceanology, ChineseAcademy of Sciences, Qingdao 266071, China |
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| Abstract: | Wave-number spectrum technique is proposed to retrieve coastal water depths by means of Synthetic Aperture Radar (SAR) image of waves. Based on the general dispersion relation of ocean waves, the wavelength changes of a surface wave over varying water depths can be derived from SAR. Approaching the analysis of SAR images of waves and using the general dispersion relation of ocean waves, this indirect technique of remote sensing bathymetry has been applied to a coastal region of Xiapu in Fujian Province, China. Results show that this technique is suitable for the coastal waters especially for the near-shore regions with variable water depths. |
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| Keywords: | SAR coastal water depth ocean waves dispersion relation |
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