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DTIC ADA055994: Ray Structure of Ducted Multipath for an LOS Link. |
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by Defense Technical Information Center |
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This report describes the geometric optic analysis of a |
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duct model for line-of-sight (LOS) fading. The |
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atmospheric refractive index is molded by three linear |
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segments so as to form an elevated duct. The earth's |
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curvature is taken into account by using the modified |
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refractive index. Simple approximate formula are |
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developed for the number of geometric-optic rays received |
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for a given link length. In addition, the angle of |
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departure from the transmitter of these rays is |
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calculated. The angles enable one to readily calculate |
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the amplitude and phase of contributing rays. To gain |
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insight into the structure of the ray families, the |
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trajectories of trapped rays are plotted. We have found |
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that two cusps exist, each cusp having two caustics |
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associated with it. (Author) |
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Date Published: 2017-06-06 06:04:46 |
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Identifier: DTIC_ADA055994 |
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Item Size: 30338634 |
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Language: english |
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Media Type: texts |
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# Topics |
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DTIC Archive; Lang,R H ; SYRACUSE UN... |
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