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分析船舶尾迹后向散射特性,可以进一步理解合成孔径雷达(SAR)图像上尾迹的雷达特征.基于双尺度法(TSM)给出了一种分析船舶尾迹微波后向散射特性的简化数值计算模型,并提出将尾迹海面波高函教用于模型的计算.同时得到尾迹的成像仿真结果.结果表明,探测参数对船舶尾迹散射特性与对无尾迹海面散射特性的影响是一致的.通过与海上试验得到的SAR图像比较,进一步分析和验证了雷达视向与船舶航向夹角的变化对尾迹散射特性的影响.“,”Through backscattering characteristic analysis of ship wake, radar signature of wake in Synthetic Aperture Radar (SAR) image can be understood further. Based on Two-scale model (TSM), a simplified numerical model for the microwave backscattering analysis of ship wake was given, and probability density function of wake wave height on ocean surface was proposed and applied in the model. Simulated SAP, image of wake was then derived. Simulation results indicate that for wake and ocean surface without wake, the effects of detecting parameters on scattering characteristic are identical. Compared with SAR image from sea trial, scattering coefficients of two wake arms affected by the variation of the angle between radar look direction and ship heading are analyzed and validated.