Use of the wavelet transform for signal detection

Nurgun Erdol; Filiz Basbug

doi:10.1117/12.150968

27 August 1993 Use of the wavelet transform for signal detection

Nurgun Erdol, Filiz Basbug

Proceedings Volume 1961, Visual Information Processing II; (1993) https://doi.org/10.1117/12.150968
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

In this paper, the wavelet transform is used for the purpose of noise reduction and signal enhancement in order to aid in the detection of randomly occurring short duration signals in noisy environments with signal to noise ratios of about -30 dB. The noise is characterized as being additive and consists of correlated interference as well as Gaussian noise. Such problems are encountered in many applications, such as health diagnostics (e.g. electrocardiograms, echo-cardiograms and electroencephalograms), underwater acoustics and geophysical applications where a signature signal passes through multiple media. The wavelet transform, with its basis functions localized both in time and frequency, provides the user with a signal representation suitable for detection purposes. Following the introduction, a brief description of the problem with the characteristics of the signal to be detected and the noise that is present in the environment is given. Then, background information on the wavelet transform is presented. Finally, our results obtained by applying the wavelet transform to signal detection are shown.

Citation Download Citation

Nurgun Erdol and Filiz Basbug "Use of the wavelet transform for signal detection", Proc. SPIE 1961, Visual Information Processing II, (27 August 1993); https://doi.org/10.1117/12.150968

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