Nonlinear Underwater Acoustic Signal Processing
Abstract
The proposed work focuses on a signal processing technique known as time-warping. In shallow water environments time-warping has been shown to be useful for extracting modal pulses (contributions to transient wavefields corresponding to fixed mode numbers) using" measurements made on a single hydrophone, i.e., without performing traditional mode filtering. Time-warpingis a highly nonlinear s""ignal processing technique which appears to be quite robust but, to date, time-warping has been performed only using a particular ti"me-warping transformation whose validity is limited to the ideal shallow water waveguide. The objectives of the proposed effort are" to develop the theory underlying a general-purpose time-warping transformation, implement thattheory numerically and test the resu""lting algorithm using both simulated and measured transient wavefields.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Mar 26, 2018
- Source ID
- N000141812189
Entities
People
- Michael C Brown
Organizations
- Office of Naval Research
- United States Navy
- University of Miami