The authors report a bistatic microwave radar operating at 2.45 GHz for the contactless evaluation of weather induced road conditions. The radar determines by an ellipsometric method whether the road surface is dry, wet, snow or slush covered. In the case of a wet road the evaluation of thickness, of salinity, and from that of the freezing point of the water layer is possible with +/-2 deg C accuracy for layer thickness of at least 0.07 mm. They describe the hardware, in particular the microstrip antenna design and the layout of the receiver. They present typical results of measurements and discuss principal constraints of the method when either the water layer or the road material freezes. The behavior of the radar for inhomogeneous layers on the road is evaluated, too.


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    Titel :

    Microwave remote sensing of road surface during winter time


    Weitere Titelangaben:

    Mikrowellenradar zur Untersuchung der Straßenoberfläche im Winter


    Beteiligte:
    Magerl, G. (Autor:in) / Pritzl, W. (Autor:in)


    Erscheinungsdatum :

    1994


    Format / Umfang :

    9 Seiten, 5 Bilder, 8 Quellen


    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




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