一种检测悬停直升机的新方法  

A New Method to Detect Hovering Helicopter

作　　者：孙文峰[1] 王永良[1] 

机构地区：[1]空军雷达学院重点实验室,武汉430010

出　　处：《现代雷达》2001年第1期28-32,共5页Modern Radar

基　　金：国防预研实验室基金;信息产业部电子第14研究所资助课题

摘　　要：首先对直升机旋翼的雷达回波进行建模和分析 ,在此基础上提出一种悬停直升机积累检测新方法即低通滤波和多级假设检验相结合的方法。理论分析和仿真实验表明 ,该方法简单实用 。The radar echo of a helicopter rotor is modeled and analyzed theoretically at first, then a new method is proposed to detect hovering helicopter by using low-pass filter and multilevel hypothesis examination. Theoretical analysis and simulation experiments prove that the method is simple and practicable, it can resolve the detection problem of hovering typical helicopters with airborne phased array radar under low signal to noise ratio (SNR) background.

关 键 词：悬停直升机 低信噪比 机载相控阵雷达 低通滤波 多级 雷达回波 仿真实验 直升机旋翼 

分 类 号：TN957[电子电信—信号与信息处理]