It was ascertained that there is a great margin between the theoretical values and experimental medians of the field strength of RWM and RID signals during high solar activity period at Chinese Great Wall Station on Antarctica. The calculated values are, on average, less than the experimental, especially on the propagation path between RID and Antarctica. The field strength by the experiment may be used as the basic data for the research of HF propagation over the very long distance. Because of the large deviation it seems to be necessary-to study HF propagation over the very long distance in details, especially the propagation model.
HF FIELD STRENGTH MEASUREMENTS OVER THE VERY LONG DISTANCE
1.China Research Institute of Radiowave Propagation Xinxiang 453003
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