Modeling of Mid-Frequency Reverberation in Very Shallow Water: A Green's Function Approach and Application to TREX2013 Data Analysis
Abstract
The long-term goals of this research are to better understand and accurately model low- to mid-frequency reverberation in shallow water environment. Specific goals are to develop a model of reverberation for conditions (1-10 kHz, ~20 m water depth, ~10 km range) corresponding to the ONR Target and Reverberation Experiment performed on the spring 2013 (TREX2013), develop a code and conduct computer simulations with environmental inputs typical for the chosen location, and apply this model to analysis of available TREX2013 data. This report presents a Green's function modeling approach that allows fast estimations of volume reverberation in complex shallow water environments. A simplified first-order version of the approach is considered to show how far-field scattering solutions obtained for free space can be incorporated into reverberation in complicated bounded, range-dependent, and stratified environments. A higher-order modification of this approach is considered as well, using a MFSB (Multiple Forward Single Backscatter) approximation. Application to analysis of TREX2013 reverberation and tentative model-data comparisons are presented.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 31, 2015
- Accession Number
- ADA622877
Entities
People
- Anatoliy Ivakin
Organizations
- University of Washington