首页|期刊导航|中国海洋湖沼学报（英文版）|Numerical simulation and validation of ocean waves measured by an Along-Track Interferometric Synthetic Aperture Radar
中国海洋湖沼学报（英文版）Issue(1)：1-8,8.
Numerical simulation and validation of ocean waves measured by an Along-Track Interferometric Synthetic Aperture Radar
Numerical simulation and validation of ocean waves measured by an Along-Track Interferometric Synthetic Aperture Radar
摘要
Abstract
A new nonlinear integral transform of ocean wave spectra into Along-Track Interferometric Synthetic Aperture Radar (ATI-SAR )image spectra is described.ATI-SAR phase image spectra are calculated for various sea states and radar configurations based on the nonlinear integral transform.The numerical simulations show that the slant range to velocity ratio(R/V),significant wave height to ocean wavelength ratio(Hs/λ),the baseline (2B) and incident angle(θ)affect ATI-SAR imaging.The ATI-SAR imaging theory is validated by means of Two X-band,HH-polarized ATI-SAR phase images of ocean waves and eight C-band,HH-polarized ATI-SAR phase image spectra of ocean waves.It is shown that ATI-SAR phase image spectra are in agreement with those calculated by forward mapping in situ directional wave soectra collected simultaneously with available ATI-SAR observations.ATI-SAR spectral correlation coefficients between observed and simulated are greater than 0.6 and ale not sensitive to the degree of nonlinearity.However,the ATI-SAR phase image spectral turns towards the range direction.even if the real ocean wave direction is 30°.It is also shown that the ATI-SAR imaging mechanism is significantly affected by the degree of velocity bunching nonlinearity,especially for high values of R/V and Hs/λ.关键词
ATI-SAR/nonlinear integral transform/numerical simulation/validationKey words
ATI-SAR/nonlinear integral transform/numerical simulation/validation分类
海洋科学引用本文复制引用
ZHANG Biao,HE Yijun,Paris W.VACHON..Numerical simulation and validation of ocean waves measured by an Along-Track Interferometric Synthetic Aperture Radar[J].中国海洋湖沼学报（英文版）,2008,(1):1-8,8.基金项目
National Natural Science Foundation of China(No.40276050) （No.40276050）
