北京航空航天大学学报 ›› 2017, Vol. 43 ›› Issue (10): 2081-2088.doi: 10.13700/j.bh.1001-5965.2016.0797

• 论文 • 上一篇    下一篇

基于多普勒频率差的拖曳式诱饵干扰检测

付孝龙1, 白渭雄1, 李欣1, 原慧1, 陈津津2   

  1. 1. 空军工程大学 防空反导学院, 西安 710051;
    2. 中国人民解放军94921部队, 晋江 362200
  • 收稿日期:2016-10-14 修回日期:2016-11-18 出版日期:2017-10-20 发布日期:2017-01-13
  • 通讯作者: 白渭雄 E-mail:wxb369@126.com
  • 作者简介:付孝龙,男,博士研究生。主要研究方向:雷达电子战;白渭雄,男,博士,教授,博士生导师。主要研究方向:雷达电子战;李欣,男,博士研究生。主要研究方向:雷达抗干扰新技术;原慧,女,博士研究生。主要研究方向:盲信号处理。陈津津,男,助理工程师。主要研究方向:雷达电子战。
  • 基金资助:
    国家自然科学基金(61501500)

Towed radar active decoy jamming detection based on Doppler frequency difference

FU Xiaolong1, BAI Weixiong1, LI Xin1, YUAN Hui1, CHEN Jinjin2   

  1. 1. School of Air and Missile Defense, Air Force Engineering University, Xi'an 710051, China;
    2. Unit 94921 of the PLA, Jinjiang 362200, China
  • Received:2016-10-14 Revised:2016-11-18 Online:2017-10-20 Published:2017-01-13

摘要: 诱饵的检测是拖曳式诱饵(TRAD)干扰对抗的基础。对单脉冲雷达有无拖曳式诱饵干扰下平衡鉴相器(BPD)输出角误差信号进行了推导,根据平衡鉴相器的原理,得出了目标和诱饵干扰信号间的多普勒频率差会影响角误差信号的结论。当不存在拖曳式诱饵干扰时,经低通滤波器处理后角误差信号无变化;当存在拖曳式诱饵干扰时,经低通滤波器处理后角误差信号交流部分被滤除,角误差信号发生变化。根据诱饵存在与否时角误差信号的这一差异,利用门限检测实现对诱饵干扰的检测。仿真分析了不同干扰场景下的检测性能,验证了本文方法的有效性。

关键词: 电子对抗, 拖曳式诱饵(TRAD), 存在性检测, 多普勒频率差, 门限检测

Abstract: The foundation of countering the towed radar active decoy (TRAD) is the presence detection of decoy. Derivation of monopulse radar angle error output of balanced phase discriminator (BPD) with and without towed radar active decoy was demonstrated. According to the principle of BPD, the conclusion can be obtained that the Doppler frequency difference between target and decoy would affect the angle error. There was no variation when the angle error passed through the low pass filter without the decoy jamming; there was a change under the condition of decoy jamming. The alternating part of the angle error was filtered out by the low pass filter.Based on the variation of angle error with and without decoy, threshold detection was used to detect the towed radar active decoy. Simulation analysis under different jamming conditions was performed on the detection performance of the proposed method, and its effectiveness was validated.

Key words: electronic countermeasure, towed radar active decoy (TRAD), detection of presence, Doppler frequency difference, threshold detection

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