An active infrared (IR) instrument that provides three- dimensional information for use in the monitoring and study of atmospheric turbulence will be developed. The innovation overcomes the limitations that prevent the satisfactory use of present gauging technology. The objective is to establish that a practical laser can drive the system at 10 meters and that the physics is sufficiently unique to provide accurate measurements. The project will seek to generate computer models that combine the laser physics, IR physics, airspeed, and three-dimensional wind for use in concept testing and parameter definition. It will study IR laser power transfer to the air and IR sensitivity properties to detect the same. Additionally, it will determine the practical size for the combined instrument in research aircraft. It is anticipated that a practical device can be developed which would measure three-dimensional wind speeds to well below 1 m/s with 5 percent or better accuracy.
Potential Commercial Applications: Expected NASA applications and benefits are an opportunity to measure accurately three- dimensional air motion from a moving aircraft. Other possible applications include remote turbulence detection (from aircraft or ground-based), and wake vortex detection (airborne or ground- based).
