Suppression of Noise Amplitude Modulation Interference in Triangle Frequency Modulation Detector Based on FrFT

Zhu Yuying; Zhang Shuning; Zhao Huichang; Chen Si

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Suppression of Noise Amplitude Modulation Interference in Triangle Frequency Modulation Detector Based on FrFT

机译：基于FRFT的三角频调制检测器中噪声幅度调制干扰的抑制

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The target detection problem for a triangle wave frequency modulation (TWFM) detection system in the presence of the noise amplitude modulation (NAM) interference is considered in this paper. The range measuring principle based on Chirp Z Transform (CZT) and velocity measuring principle based on Moving Target Detection (MTD) are respectively introduced. Exploiting the observation that the NAM interference often affects the TWFM detector's detection performance, we present an anti-interference method based on Fractional Fourier Transform (FrFT) to suppress the NAM jamming. Simulations show that the method proposed in this paper can excise the NAM interference effectively. Moreover, all proposed methods are realized by FPGA for the first time, and then the outside field experiments verify the feasibility of these techniques.

机译：在本文中考虑了在存在噪声幅度调制（NAM）干扰的情况下三角波频调制（TWFM）检测系统的目标检测问题。基于Chirp Z变换（CZT）和基于移动目标检测（MTD）的速度测量原理的范围测量原理。利用了NAM干扰通常影响TWFM检测器的检测性能的观察，我们提出了一种基于分数傅里叶变换（FRFT）的抗干扰方法来抑制NAM干扰。模拟表明，本文提出的方法可以有效地消除NAM干扰。此外，所有提出的方法都是第一次通过FPGA实现，然后外部场实验验证了这些技术的可行性。

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来源
《IEEE sensors journal》 |2021年第14期|16107-16117|共11页
作者
Zhu Yuying; Zhang Shuning; Zhao Huichang; Chen Si;
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作者单位

Nanjing Univ Sci & Technol Sch Elect & Opt Engn Nanjing 210094 Peoples R China;

Nanjing Univ Sci & Technol Sch Elect & Opt Engn Nanjing 210094 Peoples R China;

Nanjing Univ Sci & Technol Sch Elect & Opt Engn Nanjing 210094 Peoples R China;

Nanjing Univ Sci & Technol Sch Elect & Opt Engn Nanjing 210094 Peoples R China;

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原文格式 PDF
正文语种 eng
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关键词
TWFM detector; NAM jamming; FrFT; FPGA; outside field experiments;

机译：TWFM探测器;NAM卡住;FRFT;FPGA;外部实验;

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7. Perceptual organization in a comodulation masking release interference paradigm: Exploring the role of amplitude modulation, frequency modulation, and harmonicity [J] . John H. Grose, Joseph W. Hall III, Lee Mendoza The Journal of the Acoustical Society of America . 1995,第5期

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10. Cross correlation method for measuring amplitude modulation (AM) and phase modulation (PM) noise [D] . Crespo, William F. 2011

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11. Effect of noise on modulation amplitude and phase in frequency-domaindiffusive imaging [O] . Dongyel Kang, Matthew A. Kupinski 2012

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13. High Frequency (HF) Amplitude Modulation (AM) Signal-to-Interference Ratio (SIR) Study. [R] . Freeman, E. R., Sachs, H. M. 1975

机译：高频（HF）幅度调制（am）信号干扰比（sIR）研究。

Suppression of Noise Amplitude Modulation Interference in Triangle Frequency Modulation Detector Based on FrFT

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