CAJ | 학술논문

传统的初猜谱海浪反演方法，需要先使用海浪预报模式来获取初猜谱，其优劣直接影响着反演的精度。为了摆脱对初猜谱的依赖，在不需要先验信息的情况下实现海浪反演，提出了基于交叉谱法的海浪反演方案。该方案采用C波段全极化机载SAR探测数据，利用全极化信息反演海面风矢量，作为WVW算法的风场输入，再通过WVW算法获取海浪谱，进而提取海浪信息。研究结果表明，海浪反演精度得到显著提高，海浪传播180°模糊问题也得到了有效解决。该方案对机载SAR海浪反演业务化应用具有借鉴意义。
전통적초시보해랑반연방법，수요선사용해랑예보모식래획취초시보，기우렬직접영향착반연적정도。위료파탈대초시보적의뢰，재불수요선험신식적정황하실현해랑반연，제출료기우교차보법적해랑반연방안。해방안채용C파단전겁화궤재SAR탐측수거，이용전겁화신식반연해면풍시량，작위WVW산법적풍장수입，재통과WVW산법획취해랑보，진이제취해랑신식。연구결과표명，해랑반연정도득도현저제고，해랑전파180°모호문제야득도료유효해결。해방안대궤재SAR해랑반연업무화응용구유차감의의。
The traditional first guess spectra wave retrieval method requires the first guess spectra firstly, which is taken from the numerical wave model. The quality of first guess spectra affects the accuracy of the retrieval. In or-der to get rid of the dependence on first guess spectra, to retrieve ocean wave in the case does not require a priori information. A scheme for airborne SAR wave retrieval was presented based on the cross spectra method. The C-band fully polarimetric airborne SAR sounding data were used to retrieve the ocean wind vectors, and regarded as the input of the wind field part of WVW algorithm, and then the WVW algorithm was used to get the ocean wave spectrum and the wave information. The results show that the wave retrieval accuracy is significantly improved, and the problem about the ambiguity of the waves spread direction is also effectively solved. This scheme is useful to airborne SAR wave retrieval operational application.