Conference proceeding
Tracking Multipath Structures in Shallow Water Acoustic Channels using Nonlinear Feature Representations
Global Oceans 2020: Singapore – U.S. Gulf Coast, pp.1-5
10/05/2020
DOI: 10.1109/IEEECONF38699.2020.9389189
Abstract
We investigate geometric braids as a connected nonlinear feature representation to capture time-varying multipath activity for shallow water acoustic channels. These feature representations allow real-time continuous determination of dominant multipath within the channel delay spread, while keeping the identity of different and potentially intersecting multipath separate. While braids do not offer unique representations for individual delay taps, they can track and adapt non-uniformly across estimated acoustic channels. We aim to investigate the limitations of the braiding technique and the parameters that dictate the morphology of braids in the content of shallow water channel multipath. While the multipath activity can exhibit substantial time-variability, we focus on individual braids for each band and their evolution within the delay spread and time. Results will be shown and discussed through a few example underwater acoustic channels simulated using the BELLHOP model and a portion of the estimated channel from experimental field data collected during the SPACE08 experiment.
Details
- Title: Subtitle
- Tracking Multipath Structures in Shallow Water Acoustic Channels using Nonlinear Feature Representations
- Creators
- Ryan A McCarthy - University of IowaAnanya Sen Gupta - University of Iowa
- Resource Type
- Conference proceeding
- Publication Details
- Global Oceans 2020: Singapore – U.S. Gulf Coast, pp.1-5
- DOI
- 10.1109/IEEECONF38699.2020.9389189
- Publisher
- IEEE
- Grant note
- N000141812081,N00014-20-1-2626,N00014-19-1-2609 / Office of Naval Research (10.13039/100000006)
- Language
- English
- Date published
- 10/05/2020
- Academic Unit
- Electrical and Computer Engineering
- Record Identifier
- 9984197456702771
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