IONCAP Prediction-Based Automatic Link Establishment (ALE) Frequency Selectionfor a Ten-Node Australian High-Frequency Network

摘要

This report presents the results of a high-frequency (HF) propagation analysisperformed to a ten-node Australian HF network using the IONCAP computer program. This analysis was performed for months in different seasons and sunspot numbers. The ten-node network locations are listed in table 1 and are plotted on the map in figure 1. The objective of this effort was to establish a preliminary approach for automatic link establishment (ALE) frequency-set selection. A tacit objective of this analysis was to determine the fewest number of frequencies that would provide the greatest network connectivity. This analysis is based only on predicted propagation connectivity with no consideration of link and network communication protocols or operation. In addition, it was assumed that a single frequency set would be employed over a 24-hour period in a single month.