基于修正Green函数的穿墙雷达目标对齐

Through-Wall Radar Target Alignment Based on Modified Green Function

针对接收天线接收的目标散射体的散射强度取决于目标相对于收发天线的位置、目标电性能参数以及目标几何形状的问题,提出一种将不同位置的目标对齐到参考位置的目标对齐框架。该框架创新地从BP(Back Projection)算法与线性波恩近似(Born Approximation,BA)电磁场逆散射数学模型关系入手,结合修正Green函数设计,推导出目标特征受多个参数耦合约束的去相关数学模型。基于电磁场仿真数据,从定性和定量两个角度验证所提出的目标对齐框架的有效性。

Usually in through-wall radar target imaging, the scattering intensity of target scatterers depends on multiple parameters, such as the relative position between targets and transmitting/receiving antennas, the electrical performance parameters and the geometry of targets. Aiming at such problem, this paper proposes a target alignment framework that aligns the targets at different positions to the reference po- sition. Under the framework, starting from the relationship between BP（Back Projection） algorithm and lin- ear Born approximation（BA） electromagnetic inverse scattering mathematical model and combining the modi- fied Green function, a decorrelative mathematical model is derived that the target feature is constrained by the coupling of multiple parameters. Electromagnetic simulation data is used to validate the proposed target a- lignment framework in both qualitative and quantitative ways.