Accession Number : ADP005749

Title :   An EHF Telecommunication System Engineering Model,

Corporate Author : NATIONAL BUREAU OF STANDARDS BOULDER CO

Personal Author(s) : Allen, Kenneth C.

Report Date : NOV 1987

Pagination or Media Count : 15

Abstract : An EHF Telecommunication System Engineering Model (ETSEM) has been developed as an aid in the design of line-of-sight (LOS) communication systems from 10 to 100 GHz. ETSEM provides tabulation of path geometry parameters and analyzes ray-path and Fresnel zone clearances of help the engineer design the path. ETSEM also predicts the performance (availability) of both digital and analog systems based on state-of-the-art EHF propagation models and equipment specifications. Attenuation by rain, clear-air absorption, and multipath are modeled. These are expected to essentially determine the statistics of link availability as limited by propagation impairments. Performance may be predicted for any interval of months of the year. A climatological data base for North America and Europe provides parameters for the propagation models. ETSEM has been implemented on a desk-top computer. Weaknesses and limitations of the model are discussed.

Descriptors :   *TELECOMMUNICATIONS, *MULTIPATH TRANSMISSION, RADIATION ATTENUATION, LINE OF SIGHT, EXTREMELY HIGH FREQUENCY, RAIN, NATO.

Subject Categories : Command, Control and Communications Systems

Distribution Statement : APPROVED FOR PUBLIC RELEASE