A New Method of Anti-FM Slope Mismatch Jamming for Single Channel Synthetic Aperture Radar

Zhichao MENG; Jingyue LU; Shuaiqin ZHANG; Lei ZHANG; Hongxian WANG

doi:10.11999/JEIT190687

Volume 42 Issue 9

Sep. 2020

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Article Navigation > Journal of Electronics & Information Technology > 2020 > 42(9): 2246-2252

Zhichao MENG, Jingyue LU, Shuaiqin ZHANG, Lei ZHANG, Hongxian WANG. A New Method of Anti-FM Slope Mismatch Jamming for Single Channel Synthetic Aperture Radar[J]. Journal of Electronics & Information Technology, 2020, 42(9): 2246-2252. doi: 10.11999/JEIT190687

Citation:

Zhichao MENG, Jingyue LU, Shuaiqin ZHANG, Lei ZHANG, Hongxian WANG. A New Method of Anti-FM Slope Mismatch Jamming for Single Channel Synthetic Aperture Radar[J]. Journal of Electronics & Information Technology, 2020, 42(9): 2246-2252. doi: 10.11999/JEIT190687

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A New Method of Anti-FM Slope Mismatch Jamming for Single Channel Synthetic Aperture Radar

doi: 10.11999/JEIT190687

1.
National Key Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China
2.
No.66393 Unit, the PLA, Kuerle 841001, China
3.
School of Electronic and Communication Engineering, Sun Yat-sen University, Guangzhou 510275, China

Funds: The National Natural Science Foundation of China (61771372, 61771367)

Received Date: 2019-09-05
Rev Recd Date: 2020-04-02

Available Online: 2020-04-11

Publish Date: 2020-09-27

Abstract

Abstract

The problem that single-channel Synthetic Aperture Radar (SAR) can not effectively suppress FM slope mismatch jamming is studied in this paper. According to the difference between the jamming spectrum and the real echo spectrum, a method for suppressing the mismatch jamming of SAR FM slope based on matched filtering in the frequency domain is proposed. Based on the accurate measurement of the slope of jamming FM, the sparse super-resolution estimation of the jamming position is carried out to obtain a more accurate phase of jamming delay by utilizing the sparsity of the jamming signal and the characteristics of low Signal-to-Interference Ratio (SIR). Then, the spectrum of the interference signal is reconstructed by the obtained slope of interference frequency modulation and phase delay. Based on this, the orthogonal matched filter is designed to suppress the interference signal in the frequency domain and reconstruct the undistorted scene image. Finally, computer simulation experiments verify the effectiveness of the proposed method.
- Anti-jamming,
- FM slope mismatch jamming,
- Sparse,
- Orthogonal matched filtering

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References(18)

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