DATE: Tuesday, October 22, 2013,
LOCATION: Room EN4000 (Engineering Faculty / Staff Lounge), S.J. Carew Building, 4th Floor, MUN
You are cordially invited to a Technical Presentation of the IEEE Oceanic Engineering Society. “Exploring the Ocean Floor with Synthetic Aperture Sonar” will be presented by Dr. Jeremy Dillon, Senior Scientist, Kraken Sonar Systems, St. John’s, NL
Synthetic Aperture Sonar (SAS) is a technology for generating high-resolution seabed imagery using a technique similar to Synthetic Aperture Radar (SAR). The forward motion of the sonar platform is used to synthesize an array that is much longer than the physical length by combining multiple pings in software. The resulting images have a resolution that is independent of both range and frequency, thereby circumventing the usual trade-off between range and resolution in conventional sonar.
The presentation will describe the principles of synthetic aperture imaging with an emphasis on the properties of the underwater environment that distinguish SAS from SAR. Many interesting SAS images will be presented from recent sea trials onboard a variety of autonomous underwater vehicles. Although naval mine warfare has been the main driver for development, it will be shown that SAS is truly a “dual-use” technology with great potential for subsea surveying, benthic habitat mapping, underwater archaeology, and mineral exploration.
Dr. Jeremy Dillon received the B.Eng. degree in aerospace engineering from Carleton University in 1996, the MSc degree in aeronautics from the California Institute of Technology in 1999, the MSc degree in mathematics from Carleton University in 2006, and the PhD degree in physics and physical oceanography from Memorial University of Newfoundland in 2011. Dr. Dillon is currently a Senior Scientist with Kraken Sonar Systems in St. John’s. His research interests are in optimal estimation, underwater acoustics, synthetic aperture sonar, and repeat-pass interferometry.
Hosted by the Oceanic Engineering Society (OES), Newfoundland and Labrador Chapter, Institute of Electrical and Electronics Engineers (IEEE), NL Section Marine Technology Society (MTS), NL Chapter
Contact: Neil Riggs