基于稀疏恢复的调频引信抗扫频干扰方法
Research on Anti-frequency Sweeping Jamming Method for Frequency-modulated Fuze Based on Sparse Recovery
杨瑾 1郝新红 1乔彩霞 2陈齐乐1
作者信息
- 1. 北京理工大学 机电动态控制重点实验室,北京 100081
- 2. 北京无线电计量测试研究所,北京 100081
- 折叠
摘要
针对连续波调频引信在扫频式干扰作用下的早炸或者瞎火问题,提出基于时域干扰剔除及信号稀疏重构的抗干扰方法.通过时域异常值检测定位干扰位置和持续时间,并剔除异常数据抑制干扰对引信的影响;进一步地针对干扰剔除引起的信号时域稀疏,建立基于稀疏正则项的差频信号重构优化方程,并提出基于交替方向乘子法的迭代重构算法;通过仿真和实测数据验证方法的性能.研究结果表明:该方法能够在信噪比-15 dB,置零样本率不高于70%的情况下,抑制扫频干扰的影响,准确实现目标距离-速度信息的获取,提高了调频引信抗扫频干扰能力.
Abstract
An anti-jamming method based on time-domain jamming cancellation and signal sparse reconstruction is proposed for the problem of"premature explosion"or"misfire"of continuous wave frequency-modulated(FM)fuzes under frequency sweeping jamming.The location and duration of jamming are detected through time-domain outliers,and the abnormal data are eliminated to suppress the impact of the jamming on the fuze.For the signal sparsity caused by jamming cancellation in time domain,an optimization equation for differential frequency signal reconstruction based on sparse regularization terms is established,and an ADMM-based iterative reconstruction algorithm is proposed.The performance of the proposed method is verified by using the simulated and measured data.The results show that the method can be used to suppress the influence of frequency sweeping jamming,accurately obtain the target range-velocity information,and improve the ability of FM fuze to resist the frequencys weeping jamming with a signal-to-noise ratio of-15 dB and a zero sample rate of less than 70%.
关键词
稀疏恢复/扫频干扰/调频引信/交替方向乘子法Key words
sparse recovery/frequency sweeping jamming/frequency-modulated fuze/alternating direction method of multipliers引用本文复制引用
出版年
2024
NETL
NSTL
万方数据