In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 120, No. 5_Supplement ( 2006-11-01), p. 3017-3017
Abstract:
Fishery scientists have for many years been requesting calibrated multibeam systems specially designed for fishery research applications. Simrad AS, Norway, has, in cooperation with IFREMER, France, developed a new multibeam echo sounder (ME70) and with IMR, Norway, a new multibeam sonar (MS70) for fishery research applications. Both systems have 800 transmitting and receiving channels and are based on similar hardware and software platforms. The systems are characterized by calibrated narrow beams, low sidelobe levels, high instantaneous dynamic range, and operate in the frequency range 70–120 kHz. The echo sounder is designed for high operating flexibility, with a configurable fan of 1–45 roll/pitch stabilized split beams with opening angles ∼2 to ∼7. In addition, two configurable reference beams are available for comparison with standard echo sounder systems. The sonar is mounted on a drop keel, looking horizontally, covering a horizontal sector of 60 and a vertical sector of 45. This coverage matrix is generated using 500 roll stabilized beams, 25 beams horizontally with a resolution of ∼3, and 20 beams vertically with a resolution of ∼4. Both systems are designed for fish-stock assessment and fish-behavior studies. Results from system measurements will be presented.
Type of Medium:
Online Resource
ISSN:
0001-4966
,
1520-8524
Language:
English
Publisher:
Acoustical Society of America (ASA)
Publication Date:
2006
detail.hit.zdb_id:
1461063-2
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