The problem of monitoring phased-array antennas in general and microwave landing system (MLS) in particular is considered. Various methods of monitoring phased-array antennas are suggested. One is based on changes in the far-field radiation pattern arising from defects in the array. Another method uses the near-field to far-field transformation, based on the concept of the plane-wave spectrum, for the detection of defects in the antenna. A third method is based on near-field measurements and uses the properties of the Fresnel integral. The methods were simulated on the computer and, where possible, were tested by experiment. A comparative assessment of the methods is given, and an operational monitoring system is suggested for the MLS phased array.


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    Title :

    Monitoring Techniques for phased-array antennas


    Additional title:

    Ueberwachungstechniken fuer phasengesteuerte Antennen


    Contributors:
    Ronen, J. (author) / Clarke, R.H. (author)

    Published in:

    Publication date :

    1985


    Size :

    15 Seiten, 28 Bilder, 36 Quellen



    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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