Nonlinear Markers Detecting Acoustic Weak Signals Underwater
Abstract
"Acoustic signals are routinely used for detection of underwater vehicles. Such signals are mixed into flow noise that is a consequence of underwater turbulence. In addition, additional acoustic noise sources propagate underwater due to thermal effects and noises created by underwater environment. Consequently, acoustic signals that needs to be detected may be very week andcorrupted by underwater environment and it is important to develop techniques to detect weak underwater acoustic signals propagating in noisy underwater environment. In this proposal, we are offering a different approach to detect weak underwater acoustic signals buried in noise. This approach has a potential of pulling out very weak underwater acoustic signals, such that have amplitudes below (or possibly much below) the noise amplitudes. Moreover,detection algorithm does not require knowledge of large sets of previous data (in fact, such data could be elusive since noise data may significantly change in time) and the entire detection process could be done either computationally or integrated on very fast computer hardware to speed up detection process."
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 29, 2020
- Source ID
- N000142012223
Entities
People
- Y. Braiman
Organizations
- Office of Naval Research
- United States Navy
- University of Central Florida Board of Trustees