Rotorcraft Airspeed Measurement System

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-11-C-0137
Agency Tracking Number: N093-182-0062
Amount: $373,393.00
Phase: Phase II
Program: SBIR
Awards Year: 2011
Solitcitation Year: 2009
Solitcitation Topic Code: N093-182
Solitcitation Number: 2009.3
Small Business Information
Physical Optics Corporation
Photonic Systems Division, 20600 Gramercy Place, Bldg. 100, Torrance, CA, -
Duns: 153865951
Hubzone Owned: N
Woman Owned: Y
Socially and Economically Disadvantaged: N
Principal Investigator
 Sivanesan Ponniah
 Group Leader
 (310) 320-3088
Business Contact
 Gordon Drew
Title: Chief Financial Officer
Phone: (310) 320-3088
Research Institution
To address the Navy"s need, Physical Optics Corporation (POC) has developed a new Rotorcraft Airspeed Measurement (RAM) system. This RAM system is based on self-mixing interference in a semiconductor laser diode. During Phase I, POC proved feasibility of the RAM system with a new velocity sensor system design, performance analysis, and assembly and testing of a RAM prototype that demonstrated wind speed measurements at a POC laboratory. This prototype has proven that RAM can measure wind speeds with greater than 2% accuracy and with a signal-to-noise ratio better than 10. The theoretical estimates have shown the optical Doppler signal is amplified by the cavity gain medium, enabling a much higher (~10^3) signal-to-noise ratio than traditional laser-based systems. Simulations for determining the optimal emitter size showed that an emitter radius larger than 2.5 cm is sufficient to achieve carrier-to-noise ratio of nearly 1000 at 15 m from the laser using 1550 nm laser wavelength. In Phase II, POC will develop a RAM prototype using a 1-W laser, enabling RAM to concurrently measure multidirectional low airspeed of rotorcraft. The resulting RAM will be ready for mass production and rapid transitioning to the Navy for deployment during AMCM missions.

* information listed above is at the time of submission.

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