基于混沌理論的低截獲概率雷達(dá)波形設(shè)計(jì)
發(fā)布時間:2019-01-10 18:46
【摘要】:為提高低截獲概率雷達(dá)的射頻隱身性能,提出了一種基于混沌理論的雷達(dá)波形設(shè)計(jì)方法。利用混沌信號的低截獲性和良好的保密性,選取混沌logistic映射對傳統(tǒng)調(diào)頻信號進(jìn)行優(yōu)化,即用混沌序列去確定調(diào)頻信號的頻率變化,設(shè)計(jì)一種混沌調(diào)頻信號。為驗(yàn)證波形性能,分別從抗截獲能力、探測能力兩個方面來衡量信號性能。理論分析來看,設(shè)計(jì)的混沌調(diào)頻信號具有較大的時寬帶寬積,能夠較好地降低截獲因子以提高隱身性能。仿真表明,在與幾種經(jīng)典的低截獲概率雷達(dá)波形的性能比較中,該混沌調(diào)頻信號的模糊函數(shù)圖更接近"圖釘形",具有更好的測速測距精度。
[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.
【作者單位】: 空軍工程大學(xué)航空航天工程學(xué)院;
【基金】:航空科學(xué)基金(No.20145596025,No.20152096019)
【分類號】:TN957.51
本文編號: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.
【作者單位】: 空軍工程大學(xué)航空航天工程學(xué)院;
【基金】:航空科學(xué)基金(No.20145596025,No.20152096019)
【分類號】:TN957.51
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