File:LBL Acoustic Positioning System Aquamap Diver.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:28, 17 May 2009		1,280 × 845 (608 KB)	Desertstar	{{Information \|Description={{en\|1=Method of operation of a long-baseline (LBL) underwater acoustic positioning system for divers. A diver mounted transponder (A) emits an acoustic signal or 'ping' that travels to baseline transponders (B, C, D). The tr

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