Accession Number : ADA019811

Title :   Performance Prediction for Short-Range Troposcatter Links.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OHIO SCHOOL OF ENGINEERING

Personal Author(s) : Daniel,Larry D.

Report Date : DEC 1975

Pagination or Media Count : 54

Abstract : Existing models which characterize the performance of troposcatter channels fail to give adequate results for short paths (less than 150 miles). In the paper, one such model, developed by Bello to predict the delay power spectrum of the channel, was modified by treating the scatter-angle exponent as a function of path length rather than a constant. This modification indicated that a first-order relationship between scatter-angle exponent and path length accurately modeled the available data from six short-range troposcatter systems. Use of the empirical relationship results in significantly improved Bello model performance predictions for the paths analyzed. This modified model accurately predicted the performance of a medium length (168 mile) path, indicating that the modification may be valid for paths greater than 150 miles.

Descriptors :   *Tropospheric scatter communications, Radio links, Mathematical models, Predictions, Short range, Propagation, Theses

Subject Categories : Radiofrequency Wave Propagation
      Radio Communications

Distribution Statement : APPROVED FOR PUBLIC RELEASE