Un-tethered Velocity of Sound Profiling Sensor (UVOSPS)

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-03-C-0051
Agency Tracking Number: N022-1115
Amount: $69,989.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Invocon, Inc.
19221 IH-45 South; Ste. 530, Conroe, TX, 77385
DUNS: 782566418
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Aaron Trott
 Program Director
 (281) 292-9903
Business Contact
 Mary Pate
Title: Vice President/General Co
Phone: (281) 292-9903
Email: pate@invocon.com
Research Institution
"Accurate knowledge of the Sound Velocity Profile (SVP) is necessary to interpret SONAR signals correctly. The Navy requires sensors, for wide deployment in existing sonobuoys, capable of determining the SVP. Surpassing the limitations and costs oftethered solutions, IVC proposes the Un-tethered Velocity of Sound Profiling Sensor (UVOSPS). This system is a stack of miniature probes that are periodically released to sink and transmit temperature and corresponding depth to the buoy using ultrasoniccommunications. The simplicity of the system is the release mechanism-a harmless crystalline structure (with a predictable dissolving rate) erodes and releases a wired receiver and then periodically the un-tethered probes. As a probe sinks, it beginstransmitting the real-time SVP information to the ultrasonic receiving transducer. The probe continues to transmit until all battery power is consumed-at least a depth of 300m. The crystal material dissolution properties will allow a "factoryprogrammable" acquisition rate. The initial UVOSPS units will contain 24 probes to be released evenly over 72 hours. The advantage of this method is the incredibly simple and inexpensive sensor system. There are no moving components and no long tethers,yet it is capable of gathering data for a very detailed and accurate SVP. Sonobuoys are used throughout the waters of the world for measurement of ocean currents, temperatures, pollution, waves, depth

* information listed above is at the time of submission.

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