Side Peak Interference Mitigation in FM-Based Passive Radar Via Detection Identification

In frequency-modulation (FM)-based passive radar, the strong side peaks randomly appearing in the ambiguity function will generate a false alarm of target detection. To mitigate this side peak interference, this paper starts with a detailed analysis of the structure and ambiguity function of FM ster...

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Bibliographic Details
Published inIEEE transactions on aerospace and electronic systems Vol. 53; no. 2; pp. 778 - 788
Main Authors Fu, Yan, Wan, Xianrong, Zhang, Xun, Fang, Gao, Yi, Jianxin
Format Journal Article
LanguageEnglish
Published New York IEEE 01.04.2017
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Alarm systems
Ambiguity
Ambiguity function
Doppler effect
Frequency modulation
frequency-modulated (FM) radio
Interference
Military technology
Modulation
Passive radar
Radar detection
Radio transmitters
side peak
Target detection
very high frequency (VHF) radar
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Summary:In frequency-modulation (FM)-based passive radar, the strong side peaks randomly appearing in the ambiguity function will generate a false alarm of target detection. To mitigate this side peak interference, this paper starts with a detailed analysis of the structure and ambiguity function of FM stereo signal. Then, it expounds the formation and characteristics of side peaks, together with a side peak identification method, which identifies and discards the false detections of the same range and Doppler caused by side peaks, respectively. The performance analysis, conducted using both simulated data and real recorded datasets, proves that the proposed method can eliminate the false targets caused by side peaks thus improving the detection performance in FM-passive radar.
ISSN:0018-9251
1557-9603
DOI:10.1109/TAES.2017.2665079