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Estimation of target distance based on fractional Fourier transform analysis of active sonar linear frequency modulation signals
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 Title & Authors
Estimation of target distance based on fractional Fourier transform analysis of active sonar linear frequency modulation signals
Hyung, Sungwoong; Park, Myungho; Hwang, Soobok; Bae, Keunsung;
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 Abstract
As a generalized form of the conventional Fourier transform, fractional Fourier transform (FrFT) can analyze a signal at intermediate domain between time and frequency domains with a transform order . Especially, FrFT has a number of advantages in the analysis of LFM (Linear Frequency Modulation) signals due to its robustness to noise. In this paper, we have proposed a new method to detect and estimate the distance of the target from the FrFT spectrum of the received echo signal. Experimental results have validated the proposed method, and shown that reliable target distance could be estimated in noise and reverberation environments.
 Keywords
FrFT;Time-frequency domain;LFM;Active sonar;Target detection;
 Language
Korean
 Cited by
 References
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