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  • 1970-1974  (2)
Medientyp
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  • 1970-1974  (2)
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  • 1
    Online-Ressource
    Online-Ressource
    Institute of Electrical and Electronics Engineers (IEEE) ; 1972
    In:  IEEE Transactions on Antennas and Propagation Vol. 20, No. 5 ( 1972-09), p. 577-581
    In: IEEE Transactions on Antennas and Propagation, Institute of Electrical and Electronics Engineers (IEEE), Vol. 20, No. 5 ( 1972-09), p. 577-581
    Materialart: Online-Ressource
    ISSN: 0096-1973
    Sprache: Englisch
    Verlag: Institute of Electrical and Electronics Engineers (IEEE)
    Publikationsdatum: 1972
    ZDB Id: 3132219-0
    ZDB Id: 2027421-X
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Online-Ressource
    Online-Ressource
    American Geophysical Union (AGU) ; 1970
    In:  Radio Science Vol. 5, No. 12 ( 1970-12), p. 1387-1395
    In: Radio Science, American Geophysical Union (AGU), Vol. 5, No. 12 ( 1970-12), p. 1387-1395
    Kurzfassung: Spatial statistical properties of a 39‐km X ‐band propagation path developing near the ground have been investigated by means of the degree of coherence, which has been measured systematically over 3 months in the fall of 1968. A direct method of measurement has been worked out and has proved to be convenient in many respects. The method is based on the repeated plotting of the interference patterns obtained by a phase scanned interferometer. The measurements of the degree of coherence refer to three pairs of antennas that were permanently on site and were cyclically switched on the circuit of the interferometer. Results on the behavior of the degree of coherence with the time of day and with the progression of the autumnal season are reported. Distribution curves for the degree of coherence of the three pairs of antennas are also given. A practical use of the study is the appreciation of the gain deterioration of large antenna systems operating near the ground. This method may also be a novel approach to the electromagnetic probing of the atmosphere.
    Materialart: Online-Ressource
    ISSN: 0048-6604 , 1944-799X
    Sprache: Englisch
    Verlag: American Geophysical Union (AGU)
    Publikationsdatum: 1970
    ZDB Id: 2011445-X
    SSG: 16,13
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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