A modular L-shaped array for 3D measurements in shallow water
Abstract
Fluctuations due to the spatial inhomogeneity of sediments and the temporal inhomogeneity of water column in shallow water regions need to be investigated as they can influence characteristics of broadband acoustic propagation in the ocean. An L-shaped acoustic array is proposed to measure three-dimensional effects of acoustic wave propagation due to temporal and spatial oceanvariability. The proposed modular design of the array will improve data collection accuracy utilizing chip-scale atomic clock technology. On the horizontal array, an element-to-element spacing of 6.25 m on each 50-m array segment (8 channels per segment) provides high resolution beamforming in 150 m horizontal aperture. The vertical array has two 24 m arrays with fixed 3 m spacing and one 24 m array with adjustable hydrophone spacing from 0.15 m to 3 m that canaccommodate frequency ranges from few Hz to 5 kHz with accurate beamforming capability.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Sep 04, 2018
- Source ID
- N000141812809
Entities
People
- Mohsen Badiey
Organizations
- Office of Naval Research
- United States Navy
- University of Delaware