Spatial Coherence of Seabed Volume Reverberation
Abstract
This program focused on the development of improved physics-based models for and analysis of time-series sensed by synthetic aperture sonar systems. These physics-based models were utilized to address two areas: (1) the spatial coherence of signals sensed by a bistatic, long-range SAS and (2) the sparse representation of signals defined by a physics-based basis. The development of coherence models supports a better understanding of how the sensor's design and employment impact the second cross-moment of the scattered field. This has an immediate benefit for SAS motion estimation and longer-term benefits for interpreting signal coherence to detect and characterize the imaged scene. The development of sparse signal representations provides a method for separation of time-series components for subsequent analysis. Developing the bases using physics-based methods allows subsequent signal processing and analysis to be tailored to specific physical responses.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 2022
- Accession Number
- AD1184781
Entities
People
- Daniel C Brown
Organizations
- Pennsylvania State University