© 2013 Oceanic Imaging Consultants, Inc.
Service + Software for Seafloor Mapping
Interferometric Sidescans / DSL-120
The DSL-120 is a 120 KHz deep-towed interferometric sidescan system owned and operated by the Deep Submergence Lab of the Woods Hole, MA.
The DSL-120A is equipped with two side scan sonars - one that maps to the right, and one that maps to the left. Each sonar has one pinger that sends sound waves to the ocean floor once every 0.8 seconds, and two receivers that catch the echoes. The sonars gather two types of information. First, they measure the intensity of the returning signal. Just as a tennis ball bounces higher off a driveway than off soft grass, sound waves bounce harder off hard surfaces than soft surfaces. Second, the sonar measures the bathymetry or contours of the surface it is mapping.
Please see our page for examples of data collected by DSL-120 and processed by GeoDAS-PC.
OIC supports the DSL-120 with a custom UNIX-based version of .