Title :
Time Frequency Analysis of underwater ambient noise in tropical littoral waters
Author :
Shastri, R.K. ; Joshi, Yashwant V. ; Das, Aruneema
Author_Institution :
Vidya Pratishthan´s CoE, Baramati, Univ. of Pune, Pune, India
Abstract :
This paper investigates better time frequency representations of littoral water ambient noise recorded at 30 meter of depth in Indian tropical water. Linear time frequency representations (TFR) like spectrogram and Continuous Wavelet Transform are compared by combining natural and anthropogenic ambient noise sources from the tropical waters. Underwater ambient noise is represented by appropriate wavelet. Statistical and image quality parameters are used to quantify the quality of these TFRs for passive sonar systems.
Keywords :
geophysical image processing; oceanographic regions; oceanographic techniques; radar imaging; sonar; wavelet transforms; Indian tropical water; TFR; anthropogenic ambient noise sources; appropriate wavelet; continuous wavelet transform; image quality parameters; passive sonar systems; statistical parameters; time frequency analysis; time frequency representations; tropical littoral waters; underwater ambient noise; Continuous wavelet transforms; Image quality; Multiresolution analysis; Noise; Spectrogram; Time-frequency analysis; Ambient Noise; Continuous Wavelet Transform; Littoral Water; Short time Fourier Transform;
Conference_Titel :
Oceans - San Diego, 2013
Conference_Location :
San Diego, CA
