Identification of sonar detection signal based on fractional Fourier transform

• Autorzy: Wang B. , Tang J. , Yu F. , Zhu Z.
• Języki publikacji: EN

Abstrakty

EN

Aiming at the source of underwater acoustic emission, in order to identify the enemy emission sonar source accurately. Using the digital watermarking technology and combining with the good time-frequency characteristics of fractional Fourier transform (FRFT),this paper proposes a sonar watermarking method based on fractional Fourier transform. The digital watermark embedding in the fractional Fourier transform domain and combined with the coefficient properties of the sonar signal in the fractional Fourier transform to select the appropriate watermark position. Using the different characteristics of the signals before and after embedding, an adaptive threshold was set for the watermark detection to realize the discrimination of sonar signals. The simulation results show the feasibility and has better resolution and large watermark capacity of this method, while the robustness of the watermark is better, and the detection precision is further improved

• Wydawca: -
• Czasopismo: Polish Maritime Research
• Rocznik: 2018
• Tom: 25
• Numer: Special Issue S2
• Opis fizyczny: p.125-131,fig.,ref.

Twórcy

autor

Wang B.

• School of Electronic and Information, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Prov., 212003, China
• Key Laboratory of Underwater Acoustic Warfare Technology, Beijing, China

autor

Tang J.

• Key Laboratory of Underwater Acoustic Warfare Technology, Beijing, China

autor

Yu F.

• Key Laboratory of Underwater Acoustic Warfare Technology, Beijing, China

autor

Zhu Z.

• School of Electronic and Information, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu Prov., China

Bibliografia

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Identyfikatory

DOI

10.2478/pomr-2018-0083