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ESSA Technical Report ERL 148-ITS 97Comparison of Propagation Measurements with Predicted Values in the 20 to 10,000 MHz RangeJanuary 1970A. G. Longley and R. K. Reasoner |
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Abstract: Predictions of tropospheric transmission loss over irregular terrain using the computer methods described by Longley and Rice (1968) are compared with measurements, to determine their limits of applicability and define the boundary conditions for their use. Area predictions for mobile systems where individual path profiles are not available are compared with measurements made with low antennas in Colorado, Ohio, Virginia, Wyoming, Idaho, and Washington. Point-to-point predictions for fixed antenna locations are compared with measurements for each of these paths and for a large number of propagation paths in various parts of the world. |
Keywords: Fixed point systems, irregular terrain, mobile systems, prediction methods, tropospheric propagation |
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Disclaimer: Certain commercial equipment, components, and software are identified in this report to specify adequately the technical aspects of the reported results. In no case does such identification imply recommendation or endorsement by the National Telecommunications and Information Administration, nor does it imply that the equipment or software identified is necessarily the best available for the particular application or uses. |
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