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研究了复杂目标激光雷达散射截面(LRCS)与电磁波段雷达散射截面的差异,提出使用可视化技术计算复杂目标后向激光雷达散射截面的流程框图,并使用该技术对某飞机全尺寸模型进行了计算。将计算结果按缩比关系换算,得到了1∶8缩比模型的散射截面。利用标准板定标法,在外场环境对1∶8缩比模型进行了实际测量,获得了缩比模型散射截面的实验数据。对计算数据与测量数据进行了对比分析,结果表明,在目标主要散射方位,理论计算和测量结果一致;通过缩比模型的测量可以获取全尺寸目标的激光散射特性。
The differences between the LRCS and electromagnetic scattering cross sections are studied. The flow chart of calculating the cross section of the backward laser radar using the visualization technique is proposed, and the full-scale model of a certain aircraft is calculated using this technique . According to the result of scaling, the scattering cross section of 1: 8 reduction model is obtained. Using the standard plate calibration method, the 1: 8 reduction ratio model was measured in the field and the experimental data of the scattering cross section was obtained. Comparing the calculated data with the measured data, the results show that the theoretical calculation and measurement results are consistent with the target primary scattering azimuth. The laser scattering characteristics of the full-size target can be obtained by scaling the model measurement.