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Publishing Language: Chinese | Open Access

Forward main lobe jamming adaptive suppression method for OFDM-MIMO radar

Zhimin XIONG1( ), Dangwei WANG2, Xinghui LI2
College of Information and Communication, National University of Defense Technology, Wuhan 430010, China
Early Warning Technology Department, Air Force Early Warning Academy, Wuhan 430019, China
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Abstract

Because of the high correlation between the forward jamming and the radar transmitting waveform, it is easy to cause serious jamming to the radar after being received by the radar main lobe. In order to solve the main lobe interference problem, the forward interference signal model of OFDM-MIMO (orthogonal frequency division multiplexing － multiple input multiple output) radar main lobe was established, and the interference mechanism of OFDM-MIMO radar was analyzed. At the same time, based on the adaptive method processing theory, the analytical formula of OFDM-MIMO radar adaptive processing weight vector was derived, and an OFDM-MIMO radar forward main lobe interference adaptive suppression method based on range-dependent beam was proposed. Theoretical research and simulation results show that the proposed method can improve the output signal to interference plus noise ratio and effectively suppress the forward main lobe interference.

Keywords

orthogonal frequency diversityMIMO radarforward main lobe jammingtwo-dimensional adaptive processing of azimuth － distance
CLC number: TN95 Document code: A Article ID: 1001-2486(2023)01-025-10

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Journal of National University of Defense Technology
Volume 45 Issue 1,
February 2023
Pages 25-34
DOI: 10.11887/j.cn.202301003

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Cite this article:
XIONG Z, WANG D, LI X. Forward main lobe jamming adaptive suppression method for OFDM-MIMO radar. Journal of National University of Defense Technology, 2023, 45(1): 25-34. https://doi.org/10.11887/j.cn.202301003

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Received: 02 February 2021
Published: 28 February 2023
© 2023 Journal of National University of Defense Technology

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).