A CO2 laser Doppler detection system has been developed to measure remotely the true airspeed of an aircraft. The system uses a 50-W sealed-off CO2 laser in a homodyne detection system employing a collinear optical telescope, a HgCdTe detector, and a frequency tracking loop. The system was successfully flight-tested on a NASA Convair 990 research aircraft during December 1971 and June 1972. The results indicate that an airspeed measurement under clear weather conditions is feasible up to an altitude of 3000 m with an error of less than 0.5%.-


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    Title :

    Airborne laser Doppler velocimeter


    Contributors:
    Munoz, R. M. (author) / Mocker, H. W. (author) / Koehler, L. (author)

    Published in:

    Publication date :

    1974-12-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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