Directional ocean wave spectra extracted from the dual-polarization SAR imagery

被引：1
|
作者：
Ren, Lin [1 ]
Yang, Jingsong [1 ]
Wang, Juan [1 ]
Zheng, Gang [1 ]
Chen, Peng [1 ]
Chen, Jianyu [1 ]
机构：
[1] State Ocean Adm, Inst Oceanog 2, State Key Lab Satellite Ocean Environm Dynam, Hangzhou 310012, Zhejiang, Peoples R China
来源：
REMOTE SENSING OF THE OCEAN, SEA ICE, COASTAL WATERS, AND LARGE WATER REGIONS 2013 | 2013年 / 8888卷
关键词：
SAR; dual-polarization; directional ocean wave spectra; INVERSION;
D O I：
10.1117/12.2028517
中图分类号：
TP7 [遥感技术];
学科分类号：
081102 ; 0816 ; 081602 ; 083002 ; 1404 ;
摘要：
A new method is proposed to extract the directional ocean wave spectra from the dual-polarization SAR imagery. Firstly, a new SAR - ocean transform is constructed by combining the quasi-linear transforms of the dual-polarization image spectra and cross spectra. The modulation transfer function (MTF) of the transform depends only on the tilt MTF. The uncertainty of MTFs in hydrodynamic and velocity bunching modulation can't bring extra errors. Secondly, the 180 degrees ambiguity of wave spectra is removed by the imaginary part of dual-polarization cross spectra. Finally, Radarsat-2 quad-polarization SAR imagery was collected to validate the performance. The extracted wave parameters are compared with the ones from buoy. Comparisons preliminarily show the potential of wave spectra extraction from dual-polarization SAR imagery. More cases will be studied.
引用
收藏
页数：7
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