双基地逆合成孔径雷达成像平面分析

摘要

This work mainly discusses the imaging plane of the Bistatic ISAR. The imaging plane is modeled by two different methods separately. One is modeling the imaging plane according to the bistatic SAR image planing; the other is to model the plane by target rotation vector analysis. The modeling process is presented in detail. Both the models are seem to be reasonable, but are different to each other.They are then testified by applying them to interpret the bistatic turntable imaging, and to analyze the possible result. The results of BP algorithm turntable imaging simulation perfectly match the predictions of the second model, which is built by target rotation vector analysis. Further simulations of moving pointscatter bistatic imaging also indicate the validity of the second model. The deficiency of the first model is also discussed.%主要分析了双基地逆合成孔径雷达的成像平面.基于双基地SAR成像平面分析,双基地目标旋转矢量分析两种方法,分别建立了两种不同的双基地ISAR成像平面模型.为验证模型正确性,分别将两种模型应用于双基地转台成像分析,并预测成像结果.基于BP算法的双基地转台点目标成像仿真表明,旋转矢量分析法建立模型的分析结果与仿真结果完全吻合.基于虚拟目标航迹的双基地逆合成孔径雷达BP算法成像仿真也验证了该模型的正确性.对基于双基地SAR的ISAR成像平面模型的缺陷也进行了初步探讨.