The coherent lidar airborne shear sensor (CLASS) is an airborne CO2 lidar system being designed and developed by Lockheed Missiles and Space Company, Inc. (LMSC) under contract to NASA Langley Research Center. The goal of this program is to develop a system with a 2- to 4-kilometer range that will provide a warning time of 20 to 40 seconds, so that the pilot can avoid the hazards of low-altitude wind shear under all weather conditions. It is a predictive system which will warn the pilot about a hazard that the aircraft will experience at some later time. The ability of the system to provide predictive warnings of clear air turbulence will also be evaluated. A one-year flight evaluation program will measure the line-of-sight wind velocity from a wide variety of wind fields obtained by an airborne radar, an accelerometer-based reactive wind-sensing system, and a ground-based Doppler radar. The success of the airborne lidar system will be determined by its correlation with the windfield as indicated by the onboard reactive system, which indicates the winds actually experienced by the NASA Boeing 737 aircraft.


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    Title :

    CLASS: Coherent Lidar Airborne Shear Sensor. Windshear Avoidance


    Contributors:
    R. Targ (author)

    Publication date :

    1991


    Size :

    18 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English





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    Forney, P. / Celmer, L. / Calloway, R. et al. | British Library Conference Proceedings | 1995



    Investigation of airborne lidar for avoidance of windshear hazards

    Targ, Russell / Bowles, Roland L. | NTRS | 1988