基于直升机主旋翼回波的检测方法研究  

Research on Detection Method of Helicopter Main Rotor Echo

作　　者：胡瑞[1] 吴琳拥[1] 

机构地区：[1]四川九洲电器集团有限责任公司第2研究所,四川绵阳621000

出　　处：《电子科技》2017年第6期96-98,共3页Electronic Science and Technology

摘　　要：提出了一种利用直升机主旋翼雷达回波特征检测直升机的方法。通过理论和实测数据分析直升机旋翼闪烁脉冲回波时域调制特点和频域分布特性,提出了时域检测分析方法和Hough变换算法获取直升机旋翼闪烁回波的闪烁脉冲宽度和闪烁周期,从而实现对直升机的有效探测。经实测数据验证,该方法能够有效检测距离3 km、高度100 m的施瓦泽269C-1直升机和罗宾逊R44直升机。The article proposes a method to detect the helicopter based on the echo signal of the helicopter rotor blade. The features of the time - domain modulation and the frequency distribution of the pulse echo signal of the helicopter rotor blade are analyzed based on the theory and measured data, and the pulse width and glint period of the echo signal of the helicopter rotor blade are obtained by the time - domain detection method and Hough transform algorithm, so as to realize detection of the helicopter. The measured data show that the proposed algorithm can detect the Schweizer 269c - 1 and Robinson r44 within the range of 3 km and at a height of 100 m.

关 键 词：雷达探测 悬停直升机 目标回波 HOUGH变换 

分 类 号：TN957[电子电信—信号与信息处理]