一种基于随机共振的PD雷达小目标检测方法

当导弹处于低空尾追攻击时,实现强副瓣杂波中弱小雷达目标检测给弹载雷达信号处理提出了一定挑战。为改善信杂比、提高检测性能,引入近年发展起来的随机共振技术。文中在介绍随机共振原理并分析脉冲多普勒雷达回波频谱特性的基础上,提出了基于随机共振原理的脉冲多普勒雷达弱小目标检测方法,并给出了检测算法流程,进而在理论上分析了该算法的检测性能。仿真实验表明,该算法有效提高了信杂比,对于脉冲多普勒体制下的弱小目标信号检测有显著效果。

A Method for PD Radar Dim Target Detection Based on Stochastic Resonance Principle

Dim signal detection is chanllenging due to the fact that the signal is submerged by the powerful sidelobe clutter,while the pulse Dopple(PD) radar is following the target.Stochastic resonance principle is made good use of to improve the signal noise ratio and the detection performance.Firstly,the basic principle of stochastic resonance is introduced,and the frequency spectrum characteristic of the return signals is analyzed while the radar is after the target.Then a novel approach based upon stochastic res...