Ambiguity function analysis and side peaks suppression of Link16 signal based passive radar

doi:10.23919/JSEE.2023.000152

Journal of Systems Engineering and Electronics ›› 2023, Vol. 34 ›› Issue (6): 1526-1536.doi: 10.23919/JSEE.2023.000152

• DEFENCE ELECTRONICS TECHNOLOGY • Previous Articles Next Articles

Ambiguity function analysis and side peaks suppression of Link16 signal based passive radar

Luyang BAI(), Jun WANG(), Xiaoling CHEN()

¹ National Key Laboratory of Radar Signal Processing, Xidian University, Xi’an 710071, China

Received:2021-07-30 Online:2023-12-18 Published:2023-12-29
Contact: Jun WANG E-mail:lybai_19@stu.xidian.edu.cn;wangjun@xidian.edu.cn;cxl120100@163.com
About author:
BAI Luyang was born in 1997. He received his B.S. degree in the School of Information and Control Engineering in 2019 from China University of Mining and Technology, Xuzhou, China. He is pursuing his M.S. degree in National Laboratory of Radar Signal Processing from Xidian University, Xi ’an, China. His research interests include passive radar signal processing and passive multiple input and multiple output radar. E-mail: lybai_19@stu.xidian.edu.cn

WANG Jun was born in 1969. He received his B.S. degree in measurement engineering, M.S. and Ph.D. degrees in signal and information processing from Xidian University in 1990, 1995, and 2000, respectively. He joined the National Laboratory of Radar Signal Processing in Xidian University in 1995, where he served as a lecturer from 1996 to 2000, and an associated professor from 2000 to 2004. Since 2004, he has been a professor in the National Laboratory of Radar Signal Processing. He is also a senior member of Chinese Institute of Electronics. He serves as a reviewer for the IET Radar, Sonar & Navigation and Electronics Letters, Journal of Systems Engineering and Electronics. His current research interests include passive coherent detection and location, radar imaging, and weak signal detection. E-mail: wangjun@xidian.edu.cn

CHEN Xiaoling was born in 1997. She received her B.S. degree in electronic and information engineering from Xidian University in 2019. She is pursuing her M.S. degree in National Laboratory of Radar Signal Processing from Xidian University, Xi ’an, China. Her research interests include terahertz multiple input and multiple output array signal processing and imaging method. E-mail: cxl120100@163.com
Supported by:
This work was supported by the National Natural Science Foundation of China (61401526).

Abstract

Abstract:

Link16 data link is the communication standard of the joint tactical information distribution system (JTIDS) used by the U.S. military and North Atlantic Treaty Organization, which is applied as the opportunistic illuminator for passive radar in this paper. The time-domain expression of the Link16 signal is established, and its ambiguity function expression is derived. The time-delay dimension and Doppler dimension side peaks of which lead to the appearance of the false target during target detection. To solve the problem, the time-delay dimension and Doppler dimension side peaks suppression methods are proposed. For the problem that the conventional mismatched filter (MMF) cannot suppress the time-delay dimension side peaks, a neighborhood MMF (NMMF) is proposed. Experimental results demonstrate the effectiveness of the proposed methods.

Key words: passive radar, ambiguity function, Link16, mismatched filter (MMF)

Luyang BAI, Jun WANG, Xiaoling CHEN. Ambiguity function analysis and side peaks suppression of Link16 signal based passive radar[J]. Journal of Systems Engineering and Electronics, 2023, 34(6): 1526-1536.

Figures/Tables 13

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Ambiguity function analysis and side peaks suppression of Link16 signal based passive radar

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