Forward-looking sonar ping-to-ping overlap. The data from wide-sector forward-looking sonars, such as ATLAS, shows significant overlap from ping to ping. The ping spacing depicted here is much larger than typical ATLAS surveys. Usually there is more than 95% overlap between successive pings.
 Ping-to-ping Overlap
Image courtesy of Thunder Bay 2010 Expedition, NOAA-OER. Download larger version (jpg, 56 KB).

Forward-looking sonar ping-to-ping overlap. The data from wide-sector forward-looking sonars, such as ATLAS, shows significant overlap from ping to ping. The ping spacing depicted here is much larger than typical ATLAS surveys. Usually there is more than 95% overlap between successive pings.

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