现代防御技术 ›› 2022, Vol. 50 ›› Issue (3): 55-60.doi: 10.3969/j.issn.1009-086x.2022.03.008

• 指挥控制与通信 • 上一篇    下一篇

基于WFrFT和调制跳变的抗截获技术研究

郭一超1, 冯健2, 张涛1   

  1. 1.津航计算技术研究所,天津 300300
    2.中国人民解放军96901部队,北京 100094
  • 收稿日期:2021-10-10 修回日期:2022-01-11 出版日期:2022-06-28 发布日期:2022-07-01
  • 作者简介:郭一超(1990-),男,山西忻州人。工程师,博士,主要研究方向为数据链系统及数字信号处理。

Research on Anti-Intercept Technology Based on WFrFT and Modulation Hopping

Yi-chao GUO1, Jian FENG2, Tao ZHANG1   

  1. 1.Tianjin Jinhang Institute of Computing Technology, Tianjin 300300, China
    2.PLA, No. 96901 Troop, Beijing 100094, China
  • Received:2021-10-10 Revised:2022-01-11 Online:2022-06-28 Published:2022-07-01

摘要:

针对传统扩频、跳频、跳时技术抗截获方式单一、抗截获能力不足的技术问题,提出了一种基于加权分数阶傅里叶变换结合调制跳变技术的抗截获方法。通过加权分数阶傅里叶变换对发送信号进行星座图旋转、伸缩和扩散,改变原始信号的特性,同时结合调制跳变技术,使不同载波频率对应不同的信号调制方式,提高了复杂、密集和多变的电磁信号环境下,信息传输的保密性和安全性。

关键词: 抗截获, 调制跳变, 加权分数阶傅里叶变换, 星座图, 保密性, 安全性

Abstract:

Aiming at the technical problems of simple anti-interception method and insufficient anti-interception ability in traditional spread spectrum, frequency hopping and time hopping techniques,, an anti-intercept technology based on weighted-type fractional Fourier transform(WFrFT) and modulation hopping is proposed. The properties of the original signal have been changed with the constellation rotation, expansion and diffusion by WFrFT. Meanwhile, combined with modulation hopping technology, different carrier frequencies correspond to different signal modulation modes. The proposed method improves the confidentiality and security of information transmission in the complex and changeable electromagnetic environment.

Key words: anti-intercept, modulation hopping, weighted-type fractional Fourier transform, constellation, confidentiality, secrity

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