Target detection method in passive bistatic radar

doi:10.23919/JSEE.2020.000021

Journal of Systems Engineering and Electronics ›› 2020, Vol. 31 ›› Issue (3): 510-519.doi: 10.23919/JSEE.2020.000021

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Target detection method in passive bistatic radar

Gang CHEN(), Jun WANG*()

National Laboratory of Radar Signal Processing, Xidian University, Xi'an 710071, China

Received:2018-10-19 Online:2020-06-30 Published:2020-06-30
Contact: Jun WANG E-mail:chengang_xidian@163.com;wangjun@xidian.edu.cn
About author:CHEN Gang was born in 1992. He received his B.S. degree in electronic and information engineering from Xidian University in 2014. He is currently a Ph.D. candidate of National Laboratory of Radar Signal Processing in Xidian University. He serves as a reviewer for the IET Radar Sonar & Navigation and Electronics Letters. His research interests include array signal processing, adaptive signal processing and their application in passive bistatic radar. E-mail: chengang_xidian@163.com|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. From 1990 to 1992, he was a research assistant in the Department of Measurement Engineering and Instrument, Xidian University. 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 and other international technical journals. His current research interests include passive coherent detection and location, radar imaging, and weak signal detection.E-mail: wangjun@xidian.edu.cn
Supported by:
the National Natural Science Foundation of China(61401526);This work was supported by the National Natural Science Foundation of China (61401526)

Abstract

Abstract:

Owing to the advantages in detecting the low altitude and stealth target, passive bistatic radar (PBR) has received much attention in surveillance purposes. Due to the uncontrollable characteristic of the transmitted signal, a high level range or Doppler sidelobes may exist in the ambiguity function which will degrade the target detection performance. Mismatched filtering is a common method to deal with the ambiguity sidelobe problem. However, when mismatched filtering is applied, sidelobes cannot be eliminated completely. The residual sidelobes will cause false-alarm when the constant false alarm ratio (CFAR) is applied. To deal with this problem, a new target detection method based on preprocessing is proposed. In this new method, the ambiguity range and Doppler sidelobes are recognized and eliminated by the preprocessing method according to the prior information. CFAR is also employed to obtain the information of the target echo. Simulation results and results on real data illustrate the effectiveness of the proposed method.

Key words: passive bistatic radar (PBR), mismatched filtering, ambiguity sidelobe, target detection

Gang CHEN, Jun WANG. Target detection method in passive bistatic radar[J]. Journal of Systems Engineering and Electronics, 2020, 31(3): 510-519.

Figures/Tables 14

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References 30

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Signal	SNR/dB	Range/km	Doppler/Hz
Target 1	–15	16.8	–155
Target 2	–17	31.5	85
Target 3	–19	60.7	–155

Station	Longitude/($^\circ$)	Latitude/($^\circ$)	Frequency/MHz
ATV station	108.792 1	33.856 4	77.25
PBR system	109.604 0	34.730 8	-
Airport	108.764 2	34.442 1	-

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Target detection method in passive bistatic radar

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