Agile-Pulse Dual-Mode High-Power Eyesafe Doppler Lidar
Agency / Branch:
DOD / ARMY
CTI has demonstrated helicopter signature detection using both long and short pulse lidars. A long-pulse lidar is optimal for sensing increases in spectral width, however this signature is susceptible to wind turbulence and shear clutter. Short pulselidars are optimal for inflow-signature detection, however they require much longer update times. To satisfy these two competing effects, CTI proposes to develop a novel agile-pulse dual-mode coherent lidar. In the turbulence-detection mode, the scanrate of this compact 5 W lidar will exceed 90 degrees in 15 sec, while providing 5 m cross range resolution at 5 km. CTI will leverage its experience in the field of wake-vortex detection and tracking to develop advanced algorithms for the reduction ofclutter-induced false alarms. Inflow-signature detection will be accomplished using a short-pulse. Here, update rates less than 10 seconds per LOS are expected. In both modes, a velocity precision better than 20 cm/s at ranges in excess of 5 km isexpected. In Phase I CTI will develop, test and refine advanced clutter rejection algorithms utilizing previously and newly acquired data sets and develop a preliminary lidar design. In Phase II CTI will develop, test, and demonstrate the prototypesensor and implement the advanced clutter-rejection algorithms in CTI's real-time signal processor.The proposed Phase I/II program will result in the development of a compact, agile-pulse, efficient, high power eyesafe coherent lidar. This technology willhave application in many military as well as commercial settings. Potential commercial applications include clear-air-turbulence detection, general aviation wind shear detection, airport wind surveillance, and environmental monitoring. Militaryapplications include helicopter signature detection and correction for precision airdrop and ballistics weapon systems.
Small Business Information at Submission:
COHERENT TECHNOLOGIES, INC.
655 Aspen Ridge Drive Lafayette, CO 80026
Number of Employees: