空天预警研究学报2025，Vol.39Issue(1)：7-11,5.DOI:10.3969/j.issn.2097-180X.2025.01.002
基于Hilbert的超宽谱极窄脉冲拖尾抑制及相参积累方法
An ultra-wide spectrum narrow pulse trailing suppression and coherent accumulation method based on Hilbert transform
摘要
Abstract
In order to solve such problems of impulse radar in long-distance detection as weak target echoes accompanied by trailing distortion effects,an ultra-wide spectrum narrow pulse trailing suppression and coherent accumulation method is proposed.Firstly,the effective suppression of ultra-wide spectrum signal trailing is achieved by frequency-domain polynomial fitting of ultra-wide spectrum narrow pulse waveform based on Hilbert transform.Then,a coherent accumulation method for ultra-wide spectrum narrow pulse moving targets based on direct wave estimation and generalized Radon Fourier transform(GRFT)is adopted to solve the problem of in-ter-pulse jitter of impulse signals and severe degradation of accumulation performance caused by sensitivity to tar-get velocity.The experimental results show that the proposed method is effective in reducing narrow pulse trailing length and improving the performance of multi-pulse accumulation.关键词
冲激雷达/Hilbert变换/极窄脉冲/拖尾抑制/相参积累Key words
impulse radar/Hilbert transform/narrow pulse/tailing suppression/coherent accumulation分类
信息技术与安全科学引用本文复制引用
时鹏飞,郭国强,韩文俊,伍光新..基于Hilbert的超宽谱极窄脉冲拖尾抑制及相参积累方法[J].空天预警研究学报,2025,39(1):7-11,5.
