基于谐波系数幅值平均的复合调制引信抗扫频式干扰方法

doi:10.13700/j.bh.1001-5965.2019.0451

北京航空航天大学学报 ›› 2020, Vol. 46 ›› Issue (7): 1317-1324.doi: 10.13700/j.bh.1001-5965.2019.0451

基于谐波系数幅值平均的复合调制引信抗扫频式干扰方法

陈齐乐, 郝新红, 闫晓鹏, 乔彩霞, 王雄武

北京理工大学机电学院, 北京 100089

收稿日期:2019-08-20 发布日期:2020-07-18
通讯作者: 郝新红 E-mail:haoxinhong@bit.edu.cn
作者简介:陈齐乐男,博士研究生。主要研究方向:无线电引信信号处理技术。
郝新红女,博士,副教授,博士生导师。主要研究方向:中近程探测及控制技术、引信抗干扰技术。
闫晓鹏男,博士,副教授,博士生导师。主要研究方向:电子对抗技术、引信干扰技术。
乔彩霞女,硕士研究生。主要研究方向:无线电引信目标特征识别技术。
王雄武男,硕士研究生。主要研究方向:无线电引信抗干扰技术。
基金资助:
国家自然科学基金（61871414）；国家“973”计划（613196）

Anti sweep jamming method of hybrid modulation fuze based on harmonic coefficient amplitude averaging

CHEN Qile, HAO Xinhong, YAN Xiaopeng, QIAO Caixia, WANG Xiongwu

School of Mechatronical Engineering, Beijing Institute of Technology, Beijing 100089, China

Received:2019-08-20 Published:2020-07-18
Supported by:
National Natural Science Foundation of China (61871414); National Basic Research Program of China (613196)

摘要/Abstract

摘要： 为提高混沌码调相与线性调频（CCPM-LFM）复合调制无线电引信的抗扫频式干扰性能，分析了扫频式干扰作用下复合调制无线电引信的响应，并提出了谐波系数幅值平均的抗干扰方法。在瞬时相关和谐波解调串联（ICHD）定距算法原理的基础上，采用快速傅里叶变换（FFT）算法提取谐波包络，并对多次FFT所得谐波系数幅值平均，充分利用混沌码的随机性和统计特性抑制干扰。理论和仿真结果表明：所提方法在不影响引信定距精度的前提下，能够有效抑制扫频干扰。

关键词: 无线电引信, 抗干扰方法, 复合调制, 谐波系数, 统计特性

Abstract: To improve the anti sweep jamming performance of the Chaotic Codes Phase Modulation and Linear Frequency Modulation (CCPM-LFM) hybrid modulation radio fuze, the response of the CCPM-LFM fuze under sweep jamming was analysed, and an anti jamming method based on harmonic coefficient amplitude average was proposed. This method was based on the ranging principle of Instantaneous Correlation Harmonic Demodulation (ICHD), and the harmonic envelope extraction was realized by Fast Fourier Transform (FFT) algorithm. By averaging the harmonic coefficient amplitudes obtained from multiple times of FFT, this method took the advantage of the random and statistical characteristics of the chaotic codes, and the jamming was effectively suppressed. Theoretical and simulation results show that the method can effectively suppress the sweep jamming without affecting the ranging resolution of the fuze.

Key words: radio fuze, anti jamming method, hybrid modulation, harmonic coefficient, statistical characteristics

中图分类号:

TJ43⁺4.1

陈齐乐, 郝新红, 闫晓鹏, 乔彩霞, 王雄武. 基于谐波系数幅值平均的复合调制引信抗扫频式干扰方法[J]. 北京航空航天大学学报, 2020, 46(7): 1317-1324.

CHEN Qile, HAO Xinhong, YAN Xiaopeng, QIAO Caixia, WANG Xiongwu. Anti sweep jamming method of hybrid modulation fuze based on harmonic coefficient amplitude averaging[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(7): 1317-1324.

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基于谐波系数幅值平均的复合调制引信抗扫频式干扰方法

Anti sweep jamming method of hybrid modulation fuze based on harmonic coefficient amplitude averaging

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