Instrument: Split-Beam Echosounder

Acronym:

Splitbeam Echosounder

External Identifier:

» skos:broadMatch http://vocab.nerc.ac.uk/collection/L05/current/FFES/

Description

"The split-beam echosounder has a transducer which is divided into four quadrants.The target direction is determined by comparing the signals received by each quadrant... The transmission pulse is applied to the whole transducer but the signals received by each quadrant are processed separately...The target strength is estimated from the transducer sensitivity in the relevant direction, namely the beam pattern and the on-axis sensitivity." From "Fisheries Acoustics: Theory and Practice" by E. John Simmonds, D. N. MacLennan, Wiley-Blackwell; 2 edition.

Datasets

Dataset Name	Brief Description
Howell caged cod metadata	trawl metadata: date, time, duration, number of fish in cage, manipulations
Hydroacoustic Survey Data 2020	Hydroacoustics - Jupiter from August 31 until November 30, 2020

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Instrument: Split-Beam Echosounder