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Main Lobe Interference Suppression Method Based on Fractional Fourier Transform

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Communications, Signal Processing, and Systems (CSPS 2023)

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 1032))

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Abstract

The Fractional Fourier transform has a good energy aggregation effect for linear frequency modulation (LFM) signals commonly used in radar systems. Therefore, this paper proposes a mainlobe interference suppression method based on Fractional Fourier transform (FRFT). Firstly, the mixed radar echo signal containing main lobe interference is processed by FRFT transform with specific LFM signal characteristics, then the interference and most noise energy are removed by filtering in the FRFT domain. Finally, FRFT inverse transformation recovers the target signal. Simulation verifies the effectiveness of the algorithm.

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Acknowledgements

This research was funded by National Natural Science Foundation of China, grant numbers 62071481 and 61501471.

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Authors and Affiliations

  1. Xi’an Research Institute of Hi-Tech, Hongqing Town, Xi’an, 710025, China

    Jian Yang & Yuwei Tu

  2. 96921 Troops of the Chinese People’s Liberation Army, Beijing, 100001, China

    Jian Lu

  3. Beijing Remote Sensing Equipment Research Institute, Beijing, 100854, China

    Fengtao Xue

  4. Logistics Information Center, Former Joint Logistics Department of Chengdu Command, Chengdu, 610015, China

    Zhi Geng

Authors
  1. Jian Yang
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  2. Yuwei Tu
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  3. Jian Lu
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  4. Fengtao Xue
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  5. Zhi Geng
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Corresponding author

Correspondence to Jian Yang .

Editor information

Editors and Affiliations

  1. College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin, China

    Wei Wang

  2. Dalian University of Technology, Dalian, China

    Xin Liu

  3. School of Information Science and Technology, Dalian Maritime University, Dalian, China

    Zhenyu Na

  4. College of Electronic and Communication Engineering, Tianjin Normal University, Tianjin, China

    Baoju Zhang

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© 2024 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

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Yang, J., Tu, Y., Lu, J., Xue, F., Geng, Z. (2024). Main Lobe Interference Suppression Method Based on Fractional Fourier Transform. In: Wang, W., Liu, X., Na, Z., Zhang, B. (eds) Communications, Signal Processing, and Systems. CSPS 2023. Lecture Notes in Electrical Engineering, vol 1032. Springer, Singapore. https://doi.org/10.1007/978-981-99-7505-1_8

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  • DOI: https://doi.org/10.1007/978-981-99-7505-1_8

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-99-7539-6

  • Online ISBN: 978-981-99-7505-1

  • eBook Packages: EngineeringEngineering (R0)

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