摘要
首先分析直升机目标回波组成,提取了旋翼回波微多普勒,通过仿真,分析比较了不同叶片数目和不同入射角时旋翼回波微多普勒,表明旋翼微多普勒分布特征与入射角无关,为提取稳定的直升机雷达特征提供了思路。
Echo components from a helicopter target are analyzed. Micro-Doppler is extracted from the echo of helicopter. By simulation micro-Doppler is analyzed and compared when the number of the blades and the angles of incidence are different, which indicated the micro - Doppler distribution feature is independent of the angle of incidence. The conclusion points out a way for extracting stable radar feature of a helicopter target.
出处
《电子信息对抗技术》
2009年第6期25-28,72,共5页
Electronic Information Warfare Technology
关键词
直升机
微动
微多普勒
旋翼
时频分析
helicopter
micro-motion
micro-Doppler
blades
time-frequency analysis
