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Application of Approximate FFT Method for Target Detection in Distributed Sensor Network  

Choi, Byung-Woong (경북대학교 전자전기컴퓨터학부)
Ryu, Chang-Soo (영남이공대학 전자정보계열)
Kwon, Bum-Soo (경북대학교 전자전기컴퓨터학부)
Hong, Sun-Mog (경북대학교 전자전기컴퓨터학부)
Lee, Kyun-Kyung (경북대학교 전자전기컴퓨터학부)
Publication Information
The Journal of the Acoustical Society of Korea / v.27, no.3, 2008 , pp. 149-153 More about this Journal
Abstract
General underwater target detection methods adopt short-time FFT for estimate target doppler. This paper proposes the efficient target detection method, instead of conventional FFT, using approximate FFT for distributed sensor network target detection, which requires lighter computations. In the proposed method, we decrease computational rate of FFT by the quantization of received signal. For validation of the proposed method, experiment result which is applied to FFT based active sonar detector and real oceanic data is presented.
Keywords
Distributed sensor network; Approximate FFT; Active sonar; FFT based detector;
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