CAJ | 학술논문

从机理上对基于阴影恢复形状技术（shape from shading，SFS）全极化SAR海浪谱反演方法的可行性进行了理论论证。结果表明，利用全极化SAR图像计算方位角漂移时，实际上隐含了速度聚束调制。除方位角处于90°附近很窄范围内的情形，流体动力学调制机制的影响可以忽略。通过对比不同极化模式数值模拟结果发现，将HH极化图像强度应用于SFS技术公式时，比采用VV极化图像强度所得的结果精度高，特别是在方位角ψ值较大时，采用HH极化SAR图像的优势更为明显。
종궤리상대기우음영회복형상기술（shape from shading，SFS）전겁화SAR해랑보반연방법적가행성진행료이론론증。결과표명，이용전겁화SAR도상계산방위각표이시，실제상은함료속도취속조제。제방위각처우90°부근흔착범위내적정형，류체동역학조제궤제적영향가이홀략。통과대비불동겁화모식수치모의결과발현，장HH겁화도상강도응용우SFS기술공식시，비채용VV겁화도상강도소득적결과정도고，특별시재방위각ψ치교대시，채용HH겁화SAR도상적우세경위명현。
Intend to develop a novel method of ocean wave spectra retrieving with full SAR images based on shape from shad -ing (SFS) combining with numerical simulating , feasibility of the new method was theoretically validated in this paper .The ve-locity bunching was implicit in the equation of orientation angle with full SAR images .Numerical simulating results show that hy-drodynamic effect can be neglected in the method except for the case when ocean waves propagate along a very small angular in -terval around the range direction (orientation angle is 90°).Compared results of applying HH polarization SAR image into SFS with those of VV polarization SAR image , especially when the orientation angleψis large, HH polarization has the higher accuracy than that of VV polarization .