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Reference signal extraction based on multiprocessing method in dual-polarization antenna passive radar

Published online by Cambridge University Press:  08 November 2022

Yucheng Yi Open the ORCID record for Yucheng Yi [Opens in a new window] ,
Lu Zhu ,
Long Liang  and
Yan Fu
Yucheng Yi*
Affiliation:
School of Information Engineering, East China Jiao Tong University, Nanchang, Jiangxi, China
Lu Zhu
Affiliation:
School of Information Engineering, East China Jiao Tong University, Nanchang, Jiangxi, China
Long Liang
Affiliation:
Southwest China Research Institute of Electronic Equipment, Chengdu, Sichuan, China
Yan Fu
Affiliation:
Wuhan Maritime Communication Research Institute, Wuhan, Hubei, China
*
Author for correspondence: Yucheng Yi, E-mail: ycyi@ecjtu.edu.cn
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Abstract

Extraction of reference signal is an indispensable step in the signal processing of polarization diversity passive radar (PDPR) based on a digital television signal. A conventional reference signal extraction method requires an additional reference antenna, which has a certain demand for space. Single dual-polarization antenna passive radar (SDPPR) systems do not require a reference antenna, and the radar station layout is flexible, which is suitable for a large-scale radar network. It is a main research direction of PDPR in future. However, its reference signal extraction needs to rely on the signal reconstruction method. When the signal to interference and noise ratio of the direct-path signal is relatively low, the signal reconstruction method will fail. In this paper, we propose a reference signal extraction method based on sub-carrier processing method, blind adaptive oblique projection technology, and extensive cancelation algorithm to solve the above problem. Experimental results show that the method proposed in this paper is a reasonable alternative after the failure of reference signal reconstruction, and it is an effective supplement to the reference signal extraction technology.

Keywords

Blind adaptive oblique projectionextensive cancellation algorithmpassive radarpolarization diversitysub-carrier processing
Type
Radar
Information
International Journal of Microwave and Wireless Technologies , Volume 15 , Issue 7 , September 2023 , pp. 1154 - 1164
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Copyright
© The Author(s), 2022. Published by Cambridge University Press in association with the European Microwave Association

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