Abstract
Discovery and learning of feature geometry in underwater acoustic sensing: Case studies and challenges in active sonar applications
The Journal of the Acoustical Society of America, Vol.155(3_Supplement), pp.A47-A47
03/01/2024
DOI: 10.1121/10.0026750
Abstract
Interpretable artificial intelligence (AI) and related machine learning (ML) techniques are gaining popularity for underwater acoustic sensing applications. However, interpretability of machine learnt features poses a fundamental challenge to successful application of these powerful data science techniques to underwater acoustics. Autonomous sonar target recognition is especially interesting from the data science perspective as beyond target-specific features, a sonar ping response typically includes significant interference from the environment, e.g., clutter, multipath scattering, etc. Such environmental interference, resulting from complex, dynamic, unpredictable, and often unknown factors, manifest as identifiable structures in acoustic color or alternate multi-dimensional feature representations that can lead to machine learning and classification errors. In this talk, we will discuss these challenges commonly encountered in underwater acoustics using case studies from field experiments in active sonar target recognition. Some results will also include physics-driven simulations in this domain to provide robust ground truths. In particular, we will posit how braided feature geometry and its representation, as well geometry of overlap between features can render a sonar target feature informative, explainable, and discoverable. [Work funded by the ONR Grant Nos. N000142112420 and N000142312503 and DoD Navy (NEEC) Grant No. N001742010016.]
Details
- Title: Subtitle
- Discovery and learning of feature geometry in underwater acoustic sensing: Case studies and challenges in active sonar applications
- Creators
- Ananya Sen GuptaIvars P. Kirsteins - Naval Undersea Warfare CenterAndrew J. Christensen - University of IowaTimothy Linhardt - University of Iowa
- Resource Type
- Abstract
- Publication Details
- The Journal of the Acoustical Society of America, Vol.155(3_Supplement), pp.A47-A47
- DOI
- 10.1121/10.0026750
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Language
- English
- Date published
- 03/01/2024
- Academic Unit
- Electrical and Computer Engineering
- Record Identifier
- 9984656553502771
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