M.B. Porter porter@mpl.ucsd.edu
Scripps Institution of Oceanography, La Jolla, CA 92152, USA
S.M. Jesus sjesus@ualg.pt
UCEH - Universidade do Algarve, PT-8000 Faro, Portugal
Y. Stephan stephan@shom.fr
X. Demoulin demoulin@shom.fr
Centre Militaire Oceanographique - SHOM, Brest, France
E. Coelho oceanografia@hidrografico.pt
Instituto Hidrografico, Lisboa, Portugal
Comments: download pdf file .
Ref.: in Proc. of First International
Symposium on Physics in Signal and Image Processing, Paris, January 1999.
Abstract : One of the currently exciting areas in SONAR research is
in
the use of acoustic channel models to imrpove SONAR systems. In this
paper,
we use the echo pattern at a single phone to localise a sound source in
both
range and depth in the ocean. To make the localisation robust, the
signal
processing is set-up with particular regard to which acoustic features
are
realible and clear encoders of the source position. The resulting
algorithm
was tested using experimental data collected during the INTIMATE'96 - a
shallow
water experiment conducted on the Portuguese continental shelf. The
results
show successful tracking over a period of several days encompassing two
fixed
25-hour stations and an 18-hour period of ship manoeuvres.
ACKNOWLEDGMENT: this work was partially supported by PRAXIS XXI program under project 2./2.1/MAR/1695/95.