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Position Estimation of Underwater Acoustic Source Using Pulsed CW Signal  

최영근 (한국해양대학교 전파공학과)
손권 (국방과학연구소)
도경철 (국방과학연구소)
김기만 (한국해양대학교 전파공학과)
Publication Information
The Journal of the Acoustical Society of Korea / v.23, no.7, 2004 , pp. 514-520 More about this Journal
Abstract
There are many techniques for underwater source localization. These are the methods based on TDOA (Time Difference Of Arrival) estimation. beamforming techniques and high resolution techniques, etc. In this Paper we estimate the underwater source position using MCPSP (Modified Cross Power Spectrum Phase) function that is calculated on frequency domain using sensors of small number. However, the performances of the localizing method based on MCPSP function drops greatly in the case of CW (Continuous Wave) signal . In this Paper we proposed the TDOA estimation method for pulsed CW signal. In the Proposed method we composed of new segment including a edge of ping. This segment was computed by short-time energy detection. With theoretical representation the performances of the proposed method were analyzed under various environment.
Keywords
Acoustic source localization; Cross-correlation; MCPSP function; Pulsed CW signal;
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