Helical and long-range circular synthetic aperture sonar
Abstract
The goal of this project is to continue to improve the signal processing associated with circular and helical scan data captured bysynthetic aperture systems. As demonstrated in ONR grant N000141410087, helical scans can be used to create very high resolution volumetric data products from synthetic aperture systems, and also used to create machine-learning training sets with pose diversity. Circular scans are used to create high resolution and de-speckled images that capture more features of targets than ordinary linear scan images. Improvements to helical scan processing will be in the form of increased reliability in the face of environmental challenges such as bathymetric variation and currents, increased image quality, and reduced computation times for the associated post-processing. A CSAS processing framework that is compatible with longer-range systems will be developed, and will enable the creation ofmuch larger CSAS images. Additionally, the temporal Doppler effects that reduce the quality of low-frequency imagery at wide aspectangles will be compensated.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 12, 2023
- Source ID
- N000142312328
Entities
People
- Timothy Marston
Organizations
- Office of Naval Research
- United States Navy
- University of Washington