To maintain optimum resolution under varying environmental conditions, a focusing compensation system has been developed. The system is capable of detecting not only changes in pressure (altitude) and the general lens temperature but also the radial thermal gradients in the lens. Theoretical considerations show that the lens is most affected by these factors. The developed system uses a laser measurement system with environmental sensors to generate a focus correction for environment and range changes.


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    Title :

    Focus compensation techniques for reconnaissance


    Contributors:
    Mckeough, J. (author) / Glavich, T. (author)

    Conference:

    Airborne reconnaissance IV


    Publication date :

    1979-01-01


    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English