Modeling a 300 kHz bathymetric sonar system
Malmquist, Kenneth A.
MetadataShow full item record
The Deep Submergence Laboratory has developed a family of calibrated high frequency bathymetric sonar systems for underwater survey. It is useful to have a detailed mathematical description of these systems to assist in data processing. A model of a generalized sonar system is developed first. This model then is made specific to the DSL 300-kHz forward scanning sonar and is implemented using the MATLAB software package. The model consists of a cascaded series of filters representing the electrical and mechanical components of the system. The model is adjusted after comparison to the transmitted pulse. The results are then inverted to demonstrate how the corrupting effects of the system can be reversed. A technique is developed for applying this reverse model to actual data. The results showed that a good representation of the system can be implemented using relatively simple descriptions of each component. The most important components are the band-limiting filter and the transducer. It is possible to reverse model these components with good results.
Submitted in partial fulfillment of the requirements for the degree of Master of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution September 1992
Showing items related by title, author, creator and subject.
Galvin, Lawrence F. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1991-08)Undersea technology is on the verge of equipping remotely operated vehicle (ROV) pilots with a three-dimensional (3-D), real-time display incorporating data from a wide variety of sensors including sonar (sound navigation ...
Analysis of 2-axis pencil beam sonar microbathymetric measurements of mine burial at the Martha’s Vineyard Coastal Observatory Gotowka, Brendan Reed (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2005-09)The changing state of warfare has driven the US Navy's area of operations closer to shore into littoral coastal waters. Mine Warfare has been proven as an extremely effective means of battlespace control in these ...
Richardson, John M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 1989-08)In this thesis, a new active sonar imaging concept is explored using the principle of code-division and the simultaneous transmission of multiple coded signals. The signals are sixteen symbol, four-bit, non-linear, block ...