Modal-MUSIC: A passive mode estimation algorithm for partially spanning arrays
Abstract
State-of-the-art mode estimation methods either utilize active source transmissions or rely on a full-spanning array to extract normal modes from noise radiated by a ship-of-opportunity. Modal-MUSIC, an adaptation of the MUSIC algorithm (best known for direction-of-arrival estimation), extracts normal modes from a moving source of unknown range recorded on a partially spanning vertical line array, given knowledge of the water column sound speed profile. The method is demonstrated on simulations, as well as on data from the SWellEx-96 experiment. Extracted normal modes from ship noise during the experiment are used to successfully localize a multitone source without any geoacoustic information.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jul 01, 2022
- Source ID
- 10.1121/10.0012041
Entities
People
- Franklin H. Akins
- W. A. Kuperman
Organizations
- Office of Naval Research
- University of California, San Diego