ACOUSTIC SEABED CLASSIFICATION: MAST'97

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Authors
  1. Collins, W.T.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN);Quester Tangent Corp, Sidney BC (CAN)
Abstract
The QTC VIEW acoustic seabed classification system recorded and classified dual 38 kHz and 120 kHz echo pings in an area offshore Cairns, Australia. Each echo was represented as a set of shape descriptors and analyzed by means of multivariate statistics. Echoes with similar properties were grouped together and labeled as an acoustic class. An acoustic classification map of the survey area was then produced. Two approaches, supervised and unsupervised classification, were used to describe and map acoustical classes for each frequency. The advantages and disadvantages of each approach are discussed. A new method of classification was developed in which both frequencies are combined.
Keywords
Seabed classification;Sediment classification;Echo sounder;Barrier reef;Australia
Report Number
DREA-CR-98-406;SC75-123-PRO3-R02 — Contractor Report
Date of publication
01 Mar 1998
Number of Pages
79
DSTKIM No
98-01922
CANDIS No
508784
Format(s):
Hardcopy;Document Image stored on Optical Disk

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