Comments: download file (cintal_rep).
Ref.: SiPLAB Report 02/22, SiPLAB, CINTAL, University of Algarve, February 2022.
Abstract
An underwater acoustic communications experiment took place out of Vilamoura harbor
to quantify vector hydrophone performance when used as a receiver for UWAC. The experiment
was performed from 9h00 to 15h00 on November 24th. The pressure-gradient
vector sensor GeoSpectrum M35 was tested, and its data was collected by an autonomous
recorder developed by Marsensing Lda. The field experiment involved a bottom tripod
with the M35 vector sensor and the designed recorder. A Lubell 916C sound source was
deployed from the PUMA catamaran, either at fixed locations or towed along isobathymetric
or ascending-bathymetric sailing routes. A CTD was used to gather the sound
speed in the water column, where local water depths varied from 13 to 30 m. An overview
of the experiment and initial data analysis are shown, where spectrograms, Direction of
Arrival estimation, and communication performance enlighten the vector sensor
characteristics.