Clutter suppression method for passive radar based on channel Doppler characteristic

被引：0
|
作者：
Liu Y. [1 ]
Wan X. [1 ]
Yi J. [1 ]
Ke H. [1 ]
机构：
[1] School of Electronic Information, Wuhan University, Wuhan
来源：
Xi Tong Gong Cheng Yu Dian Zi Ji Shu/Systems Engineering and Electronics | 2021年 / 43卷 / 01期
关键词：
Clutter suppression; Digital broadcasting signal; Orthogonal frequency division multiplex (OFDM); Passive radar;
D O I：
10.3969/j.issn.1001-506X.2021.01.08
中图分类号：
学科分类号：
摘要：
A clutter suppression method of the passive radar based on channel Doppler characteristic is proposed utilizing the orthogonal frequency division multiplex (OFDM) modulation characteristic of the digital broadcasting signal. The proposed method first obtains the frequency domain channel response of each OFDM symbol in the subcarrier domain. Then the channel response is transformed into time domain. The clutter subspace term is constructed by the channel Doppler feature in the time domain, which is used to suppress the zero-frequency and non-zero-frequency clutter. The constructed clutter subspace in the proposed method is independent of the transmitted signal and can be generated offline, which simplifies the signal processing and reduces the computational complexity. The validity of the proposed method is verified by the simulation and measured data. © 2021, Editorial Office of Systems Engineering and Electronics. All right reserved.
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页码：55 / 61
页数：6
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