基于互相关处理和分数阶傅里叶变换的高机动目标检测算法研究

庞存锁; 张硕; 郭华玲

doi:10.15892/j.cnki.djzdxb.2021.05.002

弹箭与制导学报 >

2021 , Vol. 41 >Issue 5: 7 - 11

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2021.05.002

基于互相关处理和分数阶傅里叶变换的高机动目标检测算法研究

庞存锁 ,
张硕 ,
郭华玲

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¹ 中北大学信息与通信工程学院,太原 030051
² 中北大学信息探测与处理山西省重点实验室,太原 030051
³ 中北大学电子测试技术国家重点实验室,太原 030051
⁴ 中北大学电气与控制工程学院,太原 030051

庞存锁(1978—),男,山西大同人,副教授,博士,研究方向:雷达信号处理.

收稿日期: 2020-12-21

网络出版日期: 2025-05-30

基金资助

国防科技重点实验室基金(6142001200406);山西省自然科学基金(201801D121152)

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High Maneuvering Target Detection Algorithm Based on Cross Correlation and Fractional Fourier Transform

PANG Cunsuo ,
ZHANG SHUO ,
GUO Hualing

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¹ School of Information and Communication Engineering, North University of China, Taiyuan 030051, China
² Key Laboratory of Information Detection and Processing in Shanxi Province, North University of China, Taiyuan 030051, China
³ National Key Laboratory of Electronic Measurement Technology, North University of China, Taiyuan 030051, China
⁴ School of Electrical and Control Engineering, North University of China, Taiyuan 030051, China

Received date: 2020-12-21

Online published: 2025-05-30

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摘要

针对抑制高机动目标引起的雷达回波能量扩散现象所采用的参数补偿方法存在运算量大,难以满足实时性要求的问题。文中从提高算法检测性能和运算效率的角度出发,提出一种基于互相关处理和分数阶傅里叶变换的方法。首先利用脉压信号的频域结构,基于互相关处理实现回波信号中速度与积累时间的解耦运算;然后在MTD基础上利用分数阶傅里叶变换,获得目标的距离和加速度参数,并通过连续两帧回波信号的距离信息,获得目标的速度参数;最后通过运算量分析和仿真验证,对比了所提方法的运算效率以及检测性能。

关键词： 能量扩散; 高机动; 互相关处理; 分数阶傅里叶变换

本文引用格式

庞存锁 , 张硕 , 郭华玲 . 基于互相关处理和分数阶傅里叶变换的高机动目标检测算法研究[J]. 弹箭与制导学报, 2021 , 41(5) : 7 -11 . DOI: 10.15892/j.cnki.djzdxb.2021.05.002

Abstract

In order to suppress the radar echo energy diffusion caused by high maneuvering target, the existing parameter compensation methods have the problem of large amount of computation and difficult to meet the realtime requirements. In order to improve the detection performance and operation efficiency of the algorithm, this paper proposes a method based on crosscorrelation processing and fractional Fourier transform. Firstly, using the frequencydomain structure of pulse compression signal, the decoupling operation of velocity and accumulation time in echo signal is realized based on crosscorrelation processing. Secondly, based on MTD, the distance and acceleration parameters of the target are obtained by fractional Fourier transform, and the velocity parameters of the target are obtained by the range information of two consecutive frames of echo signals; finally, the performance advantages of the proposed method are compared and analyzed through operational component analysis and simulation verification.

Key words： energy diffusion; high maneuver; cross correlation processing; fractional Fourier transform

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