Calibration reflector

dc.contributor.author	Foote, Kenneth G.
dc.date.accessioned	2012-08-15T14:42:29Z
dc.date.available	2012-08-15T14:42:29Z
dc.date.issued	1989
dc.identifier.citation	This report is not to be cited without prior reference to the author	no_NO
dc.identifier.uri	http://hdl.handle.net/11250/104565
dc.description.abstract	Calibration of scientific echo sounders and integrators entails, inter alia, measurement of the dynamic range. This can be done by repeating on-axis measurements of echoes from each of two different standard targets. When a large dynamic range is to be tested, use of a reflector may be convenient. An example is given for which a target strength of roughly 15 dB was desired for use at 38 kHz. The solution: a 12-mm-thick copper disk of 50-cm diameter, is described. Results from its first field applications, where linear operation of a new acoustic system over a 56-dB range was established, are given.	no_NO
dc.language.iso	eng	no_NO
dc.publisher	ICES	no_NO
dc.relation.ispartofseries	ICES CM Documents;1989/B:4
dc.subject	echo sounder	no_NO
dc.subject	ekkolodd	no_NO
dc.subject	gear experiments	no_NO
dc.subject	redskapsforsøk	no_NO
dc.title	Calibration reflector	no_NO
dc.type	Working paper	no_NO
dc.subject.nsi	VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Fisheries technology: 924	no_NO
dc.source.pagenumber	10 s.	no_NO