对微弱线状分布目标的雷达检测方法  

Radar detection method for weak linear distributed targets

作　　者：刘忠训[1] 王涛[1] 王雪松[1] 李文臣[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《系统工程与电子技术》2010年第3期499-503,共5页Systems Engineering and Electronics

基　　金：总装备部探索研究项目(7130620);国防科技大学优秀研究生创新项目(S070406)资助课题

摘　　要：针对飞机尾流等空间分布式目标所具有的线性特征,提出一种基于Hough变换的微弱线状分布目标检测方法。首先描述了Hough变换直线检测的一般原理,推导建立了线状微弱分布式目标的雷达回波信号模型,给出了利用Hough变换技术对线状目标回波能量进行空域非相参积累的方法。结合某L波段典型雷达系统参数进行仿真实验,仿真结果表明该方法能够有效地实现对噪声图像中线状微弱分布式目标的检测。根据检测结果,利用逆Hough变换可以对目标空间位置进行较为准确的判断。Considering the linear characteristic of spatial distributed targets such as wake vortex,a novel method for linear weak distributed target detection is proposed on the basis of Hough transform.Firstly,the generic principle of line detection by Hough transform is described.The radar echo model of the linear weak distributed target is derived and established.Then the approach to non-coherent accumulation for linear target echo energy in spatial domain by using Hough transform technique is presented.Simulation experiment is performed referring to the typical parameters of a L-band radar system.The simulation results show that the method can effectively detection linear weak distributed targets in noise images.According to the detection results,the target spatial location can be accurately judged by using an inverse Hough transform.

关 键 词：微弱信号检测 分布式目标 HOUGH变换 非相参积累 

分 类 号：TN95[电子电信—信号与信息处理]