基于有限分布参数的地面多普勒回波模型

Echo Model of Ground Doppler Based on Finite Distributed Parameters

针对目前地面弹目交会的多普勒回波信号实测数据的获取耗时耗力,而基于分布参数法的目标多普勒回波信号生成模型计算效率又低,提出了基于有限分布参数的地面多普勒回波模型生成方法。该方法以地面目标为分布参数目标,选取目标有限个反射较强的散射点作为目标质点,把目标各质点和地面分别对电磁波的反射都放到一起考虑,即有限分布参数法,建立对地目标模型。仿真表明,该方法兼顾模型精度和计算效率,可简捷有效地得到背景为地杂波的多普勒回波信号。

This paper indicated the establishment of echo model of ground Doppler on the basis of finite distributed parameters in view of low efficiency in acquiring measured data for echo Doppler signals of ground missile-target encounter and long process of establishing echo model of target Doppler by distributed parameters.The method,finite distributed parameters method,took ground target as distributed parameters target,dozens of scattering dots with strong reflection were selected as target particles,and the electromagnetic reflections of target particles and ground were respectively taken in consideration together to establish ground target model.The method was beneficial to improve model precision and calculation efficiency,effectively obtain echo Doppler signals with ground clutter as background by simulation.