Anti-jamming Method of Ultra-wideband Fuze Based on Backward Variable Distance Gate Detection

HAO Shijun; PAN Xi; HUANG Zhonghua

doi:10.12382/bgxb.2025.0055

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Anti-jamming Method of Ultra-wideband Fuze Based on Backward Variable Distance Gate Detection

更新时间：2026-05-06

- Anti-jamming Method of Ultra-wideband Fuze Based on Backward Variable Distance Gate Detection
- Acta Armamentarii Vol. 47, Issue 4, Pages: 250055(2026)
- 作者机构：
  
  北京理工大学机电学院，北京 100081
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2025.0055
  CLC： TJ43+4.1
- Received：15 January 2025，
  
  Online First：25 February 2026，
  
  Published：2026-04
- 稿件说明：
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HAO Shijun, PAN Xi, HUANG Zhonghua. Anti-jamming Method of Ultra-wideband Fuze Based on Backward Variable Distance Gate Detection[J]. Acta Armamentarii, 2026, 47(4): 250055.
DOI：

HAO Shijun, PAN Xi, HUANG Zhonghua. Anti-jamming Method of Ultra-wideband Fuze Based on Backward Variable Distance Gate Detection[J]. Acta Armamentarii, 2026, 47(4): 250055. DOI： 10.12382/bgxb.2025.0055.

摘要

针对有源干扰在信号带内可能导致超宽带引信误启动问题，依据引信飞行过程中的时空不可逆特性，提出基于后向变距离门检测的抗干扰方法，利用超宽带引信收发时序与距离门的关系，建立

“

发现-检验-确认

”

检测模型，通过时序控制距离门的多次变化实现对目标信号的发现、确认和干扰信号的检验，并利用滑动窗快速傅里叶变换提取回波信号的速度信息，实现各检测状态时间窗的自适应调整；建立超宽带引信启动概率模型，推导引信的正常启动概率；根据超宽带引信干扰条件下的失效机理，建立引信被干扰概率模型，并推导扫频干扰条件下的引信误启动概率；针对所提方法进行数学仿真和启动概率分析。研究结果表明，变距离门检测方法相较于传统单次检测方法，在保持超宽带引信正常检测性能的同时显著提升了抗干扰能力，通过扫频干扰试验和低速目标交会试验验证了所提方法的可行性。

Abstract

To address the problem that the active interference in the signal band may cause the false activation of ultra-wideband (UWB) fuze

an anti-interference method based on backward variable distance gate detection is proposed by exploiting the time-space irreversibility during the fuze flight. A“ discovery-verification-confirmation” detection model is established by using the relationship between the transmission and reception timing of UWB fuze and the distance gate. This model enables the discovery

confirmation and verification of target signals through multiple timing-controlled changes in the position of distance gate. Meanwhile

an adaptive sliding-window fast Fourier transform (FFT) is used to extract the velocity information from echo signals

enabling the adaptive adjustment of the time windows for different detection states. A probabilistic starting model of UWB fuze is then established

and the normal activation probability of UWB fuze under interference-free conditions is theoretically derived. Furthermore

an interference probability model is established based on the failure mechanism of UWB fuzes under jamming conditions

and the false starting probability under swept-frequency jamming is analytically deduced. The mathematical simulation and starting probability analysis are carried out for the proposed method. Compared with the traditional single detection method

the variable distance gate detection method can significantly enhances the anti-jamming capability of UWB fuze while maintaining the normal detection performance. Finally

the swept-frequency jamming experiments and low-speed target rendezvous test prove that the proposed method is effective.

关键词

Keywords

references

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