Journal of Communications and Networks

The Korean Institute of Commucations and Information Sciences (한국통신학회)
권호 표지

Recognition of Radar Emitter Signals Based on SVD and AF Main Ridge Slice

  • Guo, Qiang (College of Information and Communication Engineering, Harbin Engineering University) ;
  • Nan, Pulong (College of Information and Communication Engineering, Harbin Engineering University) ;
  • Zhang, Xiaoyu (College of Automation, Harbin Engineering University) ;
  • Zhao, Yuning (College of Information and Communication Engineering, Harbin Engineering University) ;
  • Wan, Jian (College of Information and Communication Engineering, Harbin Engineering University)
  • Received : 2014.03.12
  • Accepted : 2014.10.12
  • Published : 2015.10.31
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Abstract

Recognition of radar emitter signals is one of core elements in radar reconnaissance systems. A novel method based on singular value decomposition (SVD) and the main ridge slice of ambiguity function (AF) is presented for attaining a higher correct recognition rate of radar emitter signals in case of low signal-to-noise ratio. This method calculates the AF of the sorted signal and ascertains the main ridge slice envelope. To improve the recognition performance, SVD is employed to eliminate the influence of noise on the main ridge slice envelope. The rotation angle and symmetric Holder coefficients of the main ridge slice envelope are extracted as the elements of the feature vector. And kernel fuzzy c-means clustering is adopted to analyze the feature vector and classify different types of radar signals. Simulation results indicate that the feature vector extracted by the proposed method has satisfactory aggregation within class, separability between classes, and stability. Compared to existing methods, the proposed feature recognition method can achieve a higher correct recognition rate.

Keywords

Acknowledgement

Supported by : National Natural Science Foundation of China

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