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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数用于模型的计算。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。
Analyzing the backscattering characteristics of ship wake can further understand the radar features of wake on synthetic aperture radar (SAR) images. Based on the double-scale method (TSM), a simplified numerical model for analyzing the backscattering characteristics of the wake of a ship is presented. The wake function of wave height is proposed for the calculation of the model. At the same time the wake of the imaging simulation results. The results show that the influence of sounding parameters on the wake characteristics of ship wake is consistent with that of tailless sea surface profile. By comparing with the SAR images obtained at sea, further analysis and verification of the influence of the variation of the radar orientation and the heading angle of the ship on the wake scattering characteristics are carried out.