A 15.3 GHz satellite-to-ground path-diversity experiment utilizing the ATS-5 satellite


  • D. B. Hodge


During several months in 1970 and 1971 the characteristics of a diversity satellite-to-ground communication link were measured using the ATS-5 15.3 GHz downlink. These data were gathered at two ground receiving terminals spaced 4 km apart during 1970 and 8 km apart during 1971 in the vicinity of Columbus, Ohio. These data have subsequently been analyzed to determine the improvement in link performance resulting from the use of space-diversity. The results of this analysis have shown that substantial improvements in link performance may be gained through the use of space-diversity on satellite-to-ground paths. For example, the durations of fades having depths exceeding 10 db were reduced by more than two orders of magnitude for both the 4 and 8 km site separation distances.