Frequency instability of antenna under test determined from measurement of phase deviation between outputs of two antennas. Fiber-optic system used to minimize spurious component of frequency instability contributed by propagation of signal from reference antenna to Allan-variance-measuring instrument. Intended primarily to reveal contributions of wind and air-temperature effects on antenna and beam-waveguide structures to overall frequency instabilities of received signals. Technique simpler, less expensive, potentially capable of providing instability data in shorter measuring times, and more precise.


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    Title :

    Measuring Frequency Instability Of A Large Antenna


    Contributors:

    Published in:

    Publication date :

    1994-02-01



    Type of media :

    Miscellaneous


    Type of material :

    No indication


    Language :

    English





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