Investigation of Performance Prediction Methods for a Short-Range Over-the-Horizon Radio Link.

摘要

Many techniques are available that predict the median received signal level (RSL) for a long-range diffraction propagation mode or troposcatter propagation mode over-the-horizon radio link. This study investigates the applicability of some of these methods for predicting the RSL of the short-range tactical troposcatter radio set AN/TRC-97A. A 46.2 kilometer radio link, using the AN/TRC-97A, from Oxford, Ohio to Blue Ash, Ohio was used to investigate the different performance prediction methods. Three diffraction propagation modesl and five troposcatter propagation models were investigated. None of the models predicted a median RSL anywhere near the observed value. The conclusion is that none of the methods are adequate to predict the short range performance of the AN/TRC-97A. It is recommended that further studies be conducted so that more data pertaining to short-range over-the-horizon performance prediction will be available for evaluation. Color illustrations reproduced in black and white.