Nonstationary Clutter Suppression Method for Passive Radar Based on Channel Segmentation and Smoothing

Xianrong WAN; Yuqi LIU; Feng CHENG; Jianxin YI

doi:10.11999/JEIT190754

Volume 42 Issue 1

Jan. 2020

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Article Navigation > Journal of Electronics & Information Technology > 2020 > 42(1): 132-139

Xianrong WAN, Yuqi LIU, Feng CHENG, Jianxin YI. Nonstationary Clutter Suppression Method for Passive Radar Based on Channel Segmentation and Smoothing[J]. Journal of Electronics & Information Technology, 2020, 42(1): 132-139. doi: 10.11999/JEIT190754

Citation:

Xianrong WAN, Yuqi LIU, Feng CHENG, Jianxin YI. Nonstationary Clutter Suppression Method for Passive Radar Based on Channel Segmentation and Smoothing[J]. Journal of Electronics & Information Technology, 2020, 42(1): 132-139. doi: 10.11999/JEIT190754

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Nonstationary Clutter Suppression Method for Passive Radar Based on Channel Segmentation and Smoothing

doi: 10.11999/JEIT190754

School of Electronic Information, Wuhan University, Wuhan 430072, China

Funds: The National Natural Science Foundation of China (61931015, 61701350), The National Key Research and Development Program (2016YFB0502403), The Postdoctoral Innovation Talent Support Program (BX201600117), The Natural Science Foundation of Hubei Province (2016CFA061), The Major Technical Innovation Projects of Hubei Province (2019AAA061)

Received Date: 2019-09-29
Rev Recd Date: 2019-11-12

Available Online: 2019-11-30

Publish Date: 2020-01-21

Abstract

Abstract

In the complex electromagnetic environment, multipath clutter in passive radar may be nonstationary and has jump characteristics. In order to suppress this kind of non-stationary clutter, a clutter suppression method is proposed based on channel segmentation and smoothing, which combines the Orthogonal Frequency Division Multiplexing (OFDM) modulation of the transmitting signal. First, the temporal domain signal model of the jumping clutter is established. Then it is transformed into subcarrier-domain by using the OFDM structure. After channel estimation of each OFDM symbol and smoothing the segmented channel estimation, the non-stationary clutter can be suppressed by the smoothed channel estimation and reference signal in each segment. Simulation and experiment data show that the proposed method can effectively suppress the non-stationary clutter with jumping characteristic.
- Passive radar,
- Clutter suppression,
- Channel segmentation and smoothing,
- Non-stationary clutter,
- Orthogonal Frequency Division Multiplexing (OFDM)

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References(21)

References

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