Simrad MS70 Scientific multibeam sonar system We are proud to introduce the world’s first quantitative multibeam sonar for fishery research applications www.SIMRAD.
System description System overview The Simrad MS70 offers a new dimension to fishery research. It provides an acoustic matrix of stabilized and calibrated beams for biomass estimation, fish school characterization. and behaviour studies. The transducer array is normally mounted on a drop keel, which allows it to look horizontally. The Simrad MS70 allows characterization and volume estimation of a school of fish using only one single transmission.
Screen capture example and system diagram This capture shows a school of herring. Even though the MS70 detects and records data from all 500 beams, only two sectors can be shown in a traditional 2D view. One is a horizontal slice, while the other is a vertical slice through the matrix. Two views hold zoomed data, while the view on the left side shows an echogram from the single beam shared by the two sectors. (Data kindly provided by IMR, Norway.
Technical specification System • Scientific multibeam sonar Acoustics Frequency range • 75 kHz to 112 kHz Beams • • • • Organisation: Matrix Total number of beams: 500 Number of horizontal beams: 25 Number of vertical beams: 20 Beam opening angles • Horizontal: 3° • Vertical: 4° • Opening angles depend on beem steering and frequency.
