中段目标宽带雷达回波仿真及分析

Simulation and Analysis of Radar Echo Based on Moving Scattering Center Model

优化雷达自动识别中段目标,对中段目标宽带雷达回波信号进行建模,为研究中段目标散射特性,实现雷达自动识别中段目标的重要基础,提出建立了微进动目标数学描述方程,采用一种移动散射点模型的散射中心位置计算方法,根据几何绕射理论计算了各散射中心的散射强度,得到了宽带雷达中段目标的回波模型,并针对两种典型目标运用该模型进行回波仿真,获得给定目标在特定战情下的回波仿真信号。仿真结果较好地反映出目标特征,为进一步进行中段目标的识别提供了理论分析依据。

It is important to study the modeling and simulation of wideband radar midcourse targets＇ echo in order to detect the midcourse targets automatically.In this paper,the micro-precession mathematic formulas were improved,and formula of scattering center locations was raised based on the moving scattering center model.Scattering intensities of every scattering center were calculated based on geometry diffraction theory.Then,the model of midcourse targets was created.For a special model,the simulations of two representative targets＇ scattering returns were presented on the given circumstance.The results show that the simulations give a good characteristic of targets,which will assist in understanding midcourse target recognition.