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Ocean Vertical Column Optical Sound Velocity Profiler

Award Information
Agency: Department of Defense
Branch: Defense Advanced Research Projects Agency
Contract: HR001122C0179
Agency Tracking Number: D2-2656
Amount: $1,499,902.00
Phase: Phase II
Program: SBIR
Solicitation Topic Code: HR001121S0007-09
Solicitation Number: HR001121S0007.I
Solicitation Year: 2021
Award Year: 2022
Award Start Date (Proposal Award Date): 2022-09-16
Award End Date (Contract End Date): 2024-03-15
Small Business Information
20 New England Business Center
Andover, MA 01810-1111
United States
DUNS: 073800062
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 Youbo Zhao
 (978) 738-8158
Business Contact
 William Marinelli
Phone: (978) 738-8226
Research Institution

Physical Sciences Inc. (PSI) proposes to develop an underwater optical sensor for spatially continuous measurement of sound velocity profiles. The sensor leverages multiple technological advances, including a light detection and ranging (LIDAR) technique applicable for depth-resolved measurements over a large range of water columns, Raman scattering spectroscopy for remote sensing of water temperature and salinity, and a computational spectroscopy approach for high efficiency, time-resolved spectroscopic measurements. During the Phase I program, PSI developed a sensor prototype and demonstrated the technology measurement feasibility during laboratory and field tests. The Phase I data indicated that the Raman scattering signals returned from water are sufficient to support accurate LIDAR measurement of water temperature and salinity, consistent with literature reports. The Phase I work further demonstrated the feasibility of remote measurement of these water parameters based on a LIDAR Raman setup - a critical step towards the goal of spatially continuous quantification of ocean sound velocity. During the Phase II, PSI will continue the technology development and demonstrate the capability of a senor unit within a UUV compatible package. The Phase II sensor will be integrated into a commercial UUV and tested under representative in-water conditions for a final performance demonstration.

* Information listed above is at the time of submission. *

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