本文介绍了目标宽带电磁散射理论建模采用的目标电磁散射模型以及一维距离像、两维成像等宽带雷达目标特征信号的预测，突破原有的点频 Ｒ Ｃ Ｓ散射理论建模水平；而且本文宽带散射建模进行多频散射计算，反映了宽带雷达工作原理，便于宽带建模数据的进一步处理，进行目标频域特性分析和时频表达．本文最后给出了理论建模实例并与实际测量结果进行比对，得到了满意的效果 In this paper, we introduce the target electromagnetic scattering model and the prediction of the target signals of one-dimensional wide-band radar, such as one-dimensional range imaging and two-dimensional imaging, and break through the original theoretical modeling of RCS theory. In this paper, the multi-frequency scattering calculation of broadband scattering modeling reflects the working principle of wideband radar, facilitates the further processing of broadband modeling data, and analyzes the target frequency-domain characteristics and time-frequency expression. At the end of this paper, the theoretical modeling examples are given and compared with the actual measurement results, and the satisfactory results are obtained