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Vector sensor engineering test EMSO'21

F. Bozzi , fabozzi(at)
F. Zabel , fzabel(at)
F. Louza , fblouza(at)
G. Spadoni , gspadoni(at)
R. Duarte , rjduarte(at)
D. Pozzatti , a28910(at)
S.M. Jesus sjesus(at)

SiPLAB, University of Algarve, Campus de Gambelas,
PT-8005-139 Faro, Portugal

Comments: download file (cintal_rep).
Ref.: SiPLAB Report 02/22, SiPLAB, CINTAL, University of Algarve, February 2022.

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.