Pointing errors and optical imperfections automatically corrected. Coherent optical transponder employs nearly-degenerate four-wave mixing in nonlinear optical element to produce signal traveling back toward source of incoming signal. Return signal modulated for communication, navigation, data transmission, tracking, and identification. When perfected concept finds important civilian and military applications in line-of-sight tracking, communication and identification.


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    Title :

    Retrodirective-Optical-Transponder Concept


    Contributors:

    Published in:

    Publication date :

    1985-08-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English




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