Overwater propagation of millimeter waves |
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Authors: | Mondloch A. |
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Affiliation: | Sylvania Electronic Systems, an Operating Group of Sylvania Electric Products, Inc., Williamsville, NY, USA; |
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Abstract: | A field test program conducted to determine the short-and long-term fading characteristics and atmospheric absorption effects on an overwater millimeter-wave transmission path is described. A 6.1-nautical-mile overwater link was established using a 53-GHz transmitting frequency. Low grazing angles were used with antenna heights of 15 to 30 feet above sea level. The results of the program indicate 1) that short-term fading is Rayleigh distributed in the severest cases and is caused by surface reflections, and 2) that long-term fading variations occur more frequently and with greater intensity during warm weather periods. |
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