Multimode Acoustic Source
Abstract
A deployed impulsive acoustic source can be programmed remotely (as from an aircraft) to ping in different modes at selectable depths, each mode having a different combination of spectra and beampattems. The choice of modes is achieved by controlling the timing and firing order of explosive elements positioned in the array. Mode frequencies, beamwidths, and associated bandwidths are determined at the time of the array's manufacture by the num- ber of elements and the spacing. Each of the modes has different beam and spectral characteristics which are useful in different environments and in different tactical situations. The acoustic characteristics of the source in each of the modes are described, and acoustic design criteria are derived. Application examples are illustrated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1999
- Accession Number
- ADA373198
Entities
People
- Newell O. Booth
- Shelby F. Sullivan Sr