DURIP HFLIVE: High Frequency LIDAR Velocity Measurements for Underwater Environments
Abstract
This proposal presents a new technique for measuring underwater velocity field that overcomes the limitations of traditional acoustic methods. For example, Acoustic Doppler Current Profilers (ADCPs) are commonly used for long-distance velocity measurements but have low repetition rates and spatial resolutions, making them relatively unsuitable for the measurements of small-scale turbulence. To address this challenge, a novel optical system based on a scanning laser and sensors with single-photon sensitivity has been proposed. This system relies on the detection of particles and bubbles in the water column to mark the flow and measure its velocity. Unlike acoustic systems, optical methods are better suited for local flow measurements with high sensitivity and high temporal and spatial resolutions. The unique features of this technique make it a promising solution for a wide range of naval applications that are associated with measuring turbulence characteristics over a large domain quickly.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Apr 11, 2024
- Source ID
- N000142412256
Entities
People
- Rui Ni
Organizations
- Johns Hopkins University
- Office of Naval Research
- United States Navy