Ambiguity Function Analysis and Processing for Passive Radar Based on CDR Digital Audio Broadcasting

Zhang   Qiang; Wan  Xian-rong; Fu   Yan; Rao  Yun-hua; Gong  Zi-ping

doi:10.12000/JR14050

Volume 3 Issue 6

Jan. 2015

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Article Navigation > Journal of Radars > 2014 > 3(6): 702-710

YANG Lichao, GAO Yuexin, XING Mengdao, et al. High resolution microwave photonics radar real-time imaging based on generalized keystone and frequency scaling[J]. Journal of Radars, 2019, 8(2): 215–223. doi: 10.12000/JR18120

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Zhang Qiang, Wan Xian-rong, Fu Yan, Rao Yun-hua, Gong Zi-ping. Ambiguity Function Analysis and Processing for Passive Radar Based on CDR Digital Audio Broadcasting[J]. Journal of Radars, 2014, 3(6): 702-710. doi: 10.12000/JR14050

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Ambiguity Function Analysis and Processing for Passive Radar Based on CDR Digital Audio Broadcasting

DOI: 10.12000/JR14050

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

Received Date: 2014-03-19
Rev Recd Date: 2014-05-15
Publish Date: 2014-12-28

Abstract

Abstract

China Digital Radio (CDR) broadcasting is a new standard of digital audio broadcasting of FM frequency (87108 MHz) based on our research and development efforts. It is compatible with the frequency spectrum in analog FM radio and satisfies the requirements for smooth transition from analog to digital signal in FM broadcasting in China. This paper focuses on the signal characteristics and processing methods of radio-based passive radar. The signal characteristics and ambiguity function of a passive radar illumination source are analyzed. The adverse effects on the target detection of the side peaks owing to cyclic prefix, the Doppler ambiguity strips because of signal synchronization, and the range of side peaks resulting from the signal discontinuous spectrum are then studied. Finally, methods for suppressing these side peaks are proposed and their effectiveness is verified by simulations.
- Passive radar,
- Digital audio broadcasting,
- Ambiguity function,
- Range side peaks,
- Side peaks suppression

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