频谱畸变下的非连续谱信号设计方法

By establishing a discontinuous spectrum signal model under spectral distortion, and using the MM method and coordinate descent method to optimize radar signal design, the performance degradation problem caused by spectral distortion is solved, and the autocorrelation performance and computational efficiency of the radar system are improved.

CN116663278BActive Publication Date: 2026-07-17HARBIN INST OF TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HARBIN INST OF TECH
Filing Date
2023-05-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing designs for discontinuous spectrum signals do not take into account spectral distortion, resulting in degraded signal performance and insufficient optimization of autocorrelation sidelobes, which affects the detection capability of radar systems.

Method used

By establishing the relationship between the discrete transmitted signal vector and the power spectrum, distortion spectrum, and autocorrelation function, the MM method and coordinate descent method are used to optimize the low-distortion integral sidelobe discontinuous spectrum signal, satisfying the spectrum constraint and constant mode constraint, and thus optimizing the signal design.

Benefits of technology

Taking spectral distortion into account, the autocorrelation performance and computational efficiency of the radar system are improved, enhancing the radar's ability to operate in complex electromagnetic environments.

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Abstract

频谱畸变下的非连续谱信号设计方法,属于雷达波形设计领域。本发明针对目前在设计低积分旁瓣非连续谱信号时未考虑频谱畸变,使得产生的信号性能变差的问题。包括基于离散发射信号矢量S的信号模型建立S与功率谱的关系,根据功率谱确定信号的自相关函数R;再根据S的离散傅里叶变换频谱确定畸变频谱,并获得畸变后信号的表达式;同时确定畸变自相关函数;在满足频谱约束的条件下,基于畸变自相关函数获得低畸变积分旁瓣非连续谱信号DISL的表达式;构造DISL的优化问题,使低畸变积分旁瓣非连续谱信号DISL满足恒模约束;利用MM法与坐标下降法求解优化问题,获得优化后低畸变积分旁瓣非连续谱信号DISL。本发明实现了频谱畸变下的非连续谱信号设计。
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