Lewis E. Vogler

Abstract: Comparisons of theoretical attenuation based on multiple knifeedge diffraction with measured values of median propagation loss are presented for a number of different propagation paths. In general the knife-edge predictions tend to overestimate received signal strength with most of the differences between predicted and observed. Values lying in the range –12 to +7dB. Use of a computerized topographic data base to generate path profiles for the knife-edge attenuation result in predicted/observed loss differences of about the same magnitude, although spurious results sometimes arise.

Keywords: data comparisons; multiple knife-edge attenuation

To request a reprint of this report, contact:

Lilli Segre, Publications Officer
Institute for Telecommunication Sciences
(303) 497-3572

Disclaimer: Certain commercial equipment, components, and software may be 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.

Back to Search Results