Subsurface Expendable Profiler
Navy SBIR FY2013.1

Sol No.: Navy SBIR FY2013.1
Topic No.: N131-025
Topic Title: Subsurface Expendable Profiler
Proposal No.: N131-025-0250
Firm: Arete Associates
P.O. Box 2607
Winnetka, California 91396-2607
Contact: Guy Farruggia
Phone: (703) 413-0290
Web Site:
Abstract: Aret� and its subcontractor, Ultra Electronics Ocean Systems, will design the Subsurface Expendable Profiler. The Profiler merges Aret�'s Sensor technology and Ultra's acoustic communication technology to achieve untethered real-time data collection of conductivity, temperature, and depth. This device will be deployed identically to the historical probes using the submarine signal ejector. Once ejected and clear of the submarine, the device separates into two sections, one containing the CTD Sensor Module and another containing the Acoustic Communication Module. The CTD Sensor Module collects depth related temperature and conductivity data on its ascent and descent. This data is delivered via one wire tether to the Acoustic Communication Module, which in turn wirelessly sends the data back to the submarine in real-time. Upon completion of the measurement cycle the device scuttles. Direct depth knowledge allows versatility in the device to not rely on ascension to the water surface which supports under ice measurements.
Benefits: The Aret� CTD sensor utilized in the Subsurface Expendable Profiler delivers accurate depth and collocated conductivity and temperature measurements in a low cost expendable device. A joint production effort of the Aret� CTD sensor to serve the military and scientific market would bring down the cost for both.