Littoral Geoacoustic Surveys Using an Adaptive Network of Gliders (Phase 1)
WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
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The goal of this multi-phased effort is to provide over-the-horizon characterization of the ocean water column and seafloor so that areas of safe operations can be identified and sonar performance can be accurately predicted. The tasks to accomplish this are 1 use autonomous vehicles carrying wideband sensors to improve environmental measurement capabilities, 2 modify geoacoustic inversion algorithms to reduce solution ambiguity, 3 assess and characterize environmental geoacoustic variability and its impact on performance prediction algorithms, 4 develop techniques for extrapolating and interpolating geoacoustic inversion results, and 5 improve the utility of the environmental assessments for use in geographic information system GIS-enabled sonar performance prediction maps. Our program is designed to take advantage of and contribute to, the technologies and operational concepts of the Persistent Lilloral Undersea Surveillance PLUS program. This report provides the phase I results and a preliminary phase II proposal for the geoacoustic inversion GI program of Alaska Native Technologies, LLC ANT and Applied Physics Laboratory - University of Washington APL-UW. The system concept is briefly introduced and then the phase I results are presented. This is followed by an introduction to phase II. The planned activities for phase II are presented along with a schedule of the tasks to be completed. The report concludes with a look at the phase III work for this project.
- Gliders and Parachutes
- Geology, Geochemistry and Mineralogy
- Operations Research