摘要
弹道目标平动补偿有利于弹道目标微动参数提取。针对多散射点目标平动补偿的问题,提出了一种利用Radon变换对目标整体微多普勒曲线进行参数投影来达到平动参数估计的方法。对典型弹道目标进行了建模分析,得出了其散射点微动距离表达式。根据雷达信息对目标回波进行预补偿并对预补偿结果进行时频变换,再采用Radon变换对时频曲线进行参数投影,利用熵值法对投影得到的二维平面进行参数提取。利用提取的平动参数对回波进行平动补偿,仿真结果表明了上述方法的准确性。
Ballistic target translational motion compensation is beneficial to motion parameter extraction.Aiming at the problem of multiple scattering points translational motion compensation,an algorithm is proposed to extract the translational motion parameters of ballistic targets based on using the projection transform of the whole micro-frequency curve by Radon transform in this paper.First,establishing and analyzing the typical ballistic target model and the expressions of scattering points’micro-frequency are solved.Second,target signal is pre-compensated based on radar information and time-frequency transform.And Radon transform is applied to the parameter projection of time-frequency curve.Then translational motion parameters are estimated based on minimum entropy criteria and gauss fitting.Finally,translational motion is compensated by making use of the estimated motion parameters.Simulation results verify the accuracy of the proposed algorithm.
作者
韩立珣
许丹
田波
冯存前
王业峰
HAN Li-xun;XU Dan;TIAN Bo;FENG Cun-qian;WANG Ye-feng(School of Air and Missile Defense,Air Force Engineering University,Xi’an 710051,China;Unit 32147 of PLA,Baoji 721000,China)
出处
《火力与指挥控制》
CSCD
北大核心
2019年第11期16-19,共4页
Fire Control & Command Control
基金
国家自然科学基金青年基金资助项目(61501495)
关键词
弹道目标
RADON变换
参数估计
平动补偿
ballistic target
radon transform
parameter estimation
translational motion compensation
