@prefix cpm: . @prefix dc: . @prefix dcat: . @prefix dce: . @prefix dct: . @prefix dcterms: . @prefix grg: . @prefix iop: . @prefix ns0: . @prefix ns1: . @prefix owl: . @prefix pav: . @prefix prov: . @prefix puv: . @prefix qudt: . @prefix rdf: . @prefix rdfs: . @prefix reg: . @prefix sdo: . @prefix semapv: . @prefix skos: . @prefix sssom: . @prefix void: . @prefix xsd: . rdf:type sdo:DefinedTerm ; sdo:description "A multiple receiver sonar system designed to provide video-like imaging with all the advantages of underwater sonar. Recent advances in computing power have made it possible to transfer and process this data at resolutions equal to computer monitor resolution, and with image frame rates of better than 20 frames per second. Digital signal processing is used to optimize data usage from all channels to achieve the best possible resolution at every point in the field of view. The instrument is made from 6061-T6 Aluminium, Epoxy and PVC, with a Stainless Steel connector. Frequency: 260 kHz. Effective beam width: 3 degrees, 1.5 degrees, or 0.75 degrees. Beams: 120, 240, 480. The maximum operating depth is 300 meters."@en ; sdo:inDefinedTermSet ; sdo:name "Imagenex Delta T 837 (profiling) multibeam echosounder"@en ; sdo:termCode "SDN:L22::TOOL1500" .