基于混沌理论的低截获概率雷达波形设计
发布时间：2019-01-10 18:46
【摘要】：为提高低截获概率雷达的射频隐身性能,提出了一种基于混沌理论的雷达波形设计方法。利用混沌信号的低截获性和良好的保密性,选取混沌logistic映射对传统调频信号进行优化,即用混沌序列去确定调频信号的频率变化,设计一种混沌调频信号。为验证波形性能,分别从抗截获能力、探测能力两个方面来衡量信号性能。理论分析来看,设计的混沌调频信号具有较大的时宽带宽积,能够较好地降低截获因子以提高隐身性能。仿真表明,在与几种经典的低截获概率雷达波形的性能比较中,该混沌调频信号的模糊函数图更接近"图钉形",具有更好的测速测距精度。
[Abstract]:In order to improve the radio frequency stealth performance of low probability of interception radar, a radar waveform design method based on chaos theory is proposed. Based on the low interception and good confidentiality of chaotic signals, the chaotic logistic mapping is selected to optimize the traditional FM signals, that is to say, chaotic sequences are used to determine the frequency changes of FM signals, and a chaotic FM signal is designed. In order to verify the waveform performance, the signal performance is measured from two aspects: anti-interception ability and detection ability. Theoretical analysis shows that the designed chaotic FM signal has a large time-wide band wide product which can reduce the interception factor and improve the stealthy performance. The simulation results show that the fuzzy function map of the chaotic frequency modulation signal is closer to the "map nail" and has a better precision of velocity measurement and ranging in comparison with several classical low-interception probability radar waveforms.
【作者单位】： 空军工程大学航空航天工程学院;
【基金】：航空科学基金(No.20145596025,No.20152096019)
【分类号】：TN957.51
本文编号：2406666
[Abstract]:In order to improve the radio frequency stealth performance of low probability of interception radar, a radar waveform design method based on chaos theory is proposed. Based on the low interception and good confidentiality of chaotic signals, the chaotic logistic mapping is selected to optimize the traditional FM signals, that is to say, chaotic sequences are used to determine the frequency changes of FM signals, and a chaotic FM signal is designed. In order to verify the waveform performance, the signal performance is measured from two aspects: anti-interception ability and detection ability. Theoretical analysis shows that the designed chaotic FM signal has a large time-wide band wide product which can reduce the interception factor and improve the stealthy performance. The simulation results show that the fuzzy function map of the chaotic frequency modulation signal is closer to the "map nail" and has a better precision of velocity measurement and ranging in comparison with several classical low-interception probability radar waveforms.
【作者单位】： 空军工程大学航空航天工程学院;
【基金】：航空科学基金(No.20145596025,No.20152096019)
【分类号】：TN957.51
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