海浪极化SAR成像模拟对海面散射的研究有重要的意义。 基于海浪谱理论, 在考虑大、 小尺度海浪影响的基础上, 构建了双尺度的随机粗糙海面。 根据该海面模型, 利用Bragg散射模型, 小扰动模型与速度聚束理论, 模拟了不同状况下海浪的极化SAR图像。 并针对海浪参数对极化图像的影响进行了分析, 结果符合成像统计特性, 得出了一些有益于海浪信息提取的结论, 并可以为海洋卫星的设计与海洋研究提供一种行之有效的手段。

The polarization synthetic aperture radar (SAR) imaging simulation is of great significance to ocean surface scattering. According to the theory of wind-wave spectrum, rough ocean surface was modeled in the present paper using the two-scale-model. This treatment takes both the large scale and small scale surface into account. By using the velocity bunching (VB) theory, Bragg scattering model and the small perturbation model (SPM), the polarization SAR system can simulate the ocean surface with various parameters and ocean states. The effects of the parameters of ocean waves and the parameters of SAR system were analyzed. Finally, some useful conclusions were drawn, which are helpful for extracting the information of ocean surface. The method is an effective way in the ocean SAR design and the ocean surface research.