Virginia Institute of Marine Science
The Datasonics Model ASA-920 digital sonar altimeter (DSA) is a compact, high frequency (1 MHz), short range (0.5 to 5 m) underwater sonar device originally designed as an altimeter for submersib1es. Wright et al. (1986) have used the DSA successfully to measure changes in relative bed elevation at a point on the shoreface prior to and during a storm. Fixed to a rigid mounting on the seabed, the DSA produces a digital output that is proportional to the transducer elevation above the bed. The purpose of this report is to describe the response characteristics of the DSA.
Report to the U.S. Army Corps of Engineers, Waterways Experiment Station ... grant no. DACW3986 M3677
Altimeter; Sedimentation and deposition-Measurement; Coast Changes
Green, M. O., & Boon, J. D. (1987) Response Characteristics of a Short Range, High resolution, Digital Sonar Altimeter. Virginia Institute of Marine Science, College of William and Mary. http://publish.wm.edu/reports/364