Title :
Comments on “Principal Component Analysis of Single-Beam Echo-Sounder Signal Features for Seafloor Classification” by A. R. Amiri-Simkooei, M. Snellen, and D. G. Simons
Author :
Preston, J.M. ; Biffard, B.R.
Author_Institution :
Quester Tangent Corp., Saanichton, BC, Canada
Abstract :
Acoustic seabed classification with single-beam sounders is both an established process and a research topic. A recent paper (IEEE Journal of Oceanic Engineering, vol. 36, no. 2, pp. 259-271, Apr. 2011) summarizes some popular techniques, demonstrating that they can generate realistic sediment maps. In the conclusion of that paper, it is claimed that the algorithms therein can substitute for a widely used commercial software suite. This claim is not correct. Among other issues, the techniques in that paper fall short of current practice in two areas: compensation for varying water depths and choosing the best number of clusters in unsupervised classification.
Keywords :
acoustic signal processing; bathymetry; echo; geophysical signal processing; oceanographic techniques; principal component analysis; sediments; signal classification; underwater sound; acoustic seabed classification; principal component analysis; seafloor classification; sediment map; single-beam echo-sounder signal feature; unsupervised classification; water depth; Classification algorithms; Principal component analysis; Sea floor; Sea measurements; Sediments; Underwater acoustics; Classification algorithms; principal component analysis (PCA); single-beam echo sounder;
Journal_Title :
Oceanic Engineering, IEEE Journal of
DOI :
10.1109/JOE.2012.2206192
