现代雷达2024，Vol.46Issue(6)：50-55,6.DOI:10.16592/j.cnki.1004-7859.2024.06.008
基于多点频调制的反利用波形设计和优化处理
Design and Optimization Processing of Anti-exploitation Waveform Based on Multi-point Frequency Modulation
彭哲凡 1武亚涛 1郭国强1
作者信息
- 1. 南京电子技术研究所,江苏 南京 210039
- 折叠
摘要
Abstract
Conventional radar linear frequency modulation waveforms and coding waveforms are easily utilized by passive non-coop-erative radars,and the current radar waveform design has not taken into account the issue of waveform exploitation.An anti-exploi-tation waveform based on multi-point frequency modulation is proposed to address this issue.In terms of waveform design,the min-imax method is used to design a special frequency coded waveform with multiple false targets after matched filtering,and then multi-point frequency modulation is applied to this waveform to destroy the sidelobe performance of matched filtering.During the processing of waveform,based on the prior knowledge of the waveform,a pre-designed notch filter is used to remove multi-point frequency modulation firstly.Then,a convex optimization method under multiple constraints is employed to design a mismatch fil-ter,and the designed mismatch filter coefficients are used for mismatch filtering to eliminate the influence of false targets,reduce sidelobe levels,and obtain good detection indicators.Simulation analysis show that the waveform has the characteristics of high sidelobe level and multiple false targets that can confuse the distance information of true targets during matched filtering,making it difficult for passive non-cooperative radars to utilize.However,optimization processing can achieve good detection performance.关键词
反利用波形/特殊频率编码波形/多点频调制/凸优化方法/失配滤波Key words
anti-exploitation waveform/special frequency coded waveform/multi-point frequency modulation/mismatch filtering/convex optimization分类
信息技术与安全科学引用本文复制引用
彭哲凡,武亚涛,郭国强..基于多点频调制的反利用波形设计和优化处理[J].现代雷达,2024,46(6):50-55,6.
