Feasibility Study of New Methods for C3I and Surveillance Using Ionospheric Modification

This exploratory development is directed toward finding new methods of using artificially modified ionospheric regions for extending and enhancing communication (C3I) and surveillance (radar) capabilities. Specifically, the investigation, starting with a Phase I feasibility and planning effort and leading to a Phase II field experimental/demonstration effort, is to use existing active OTH radars to detect backscattering from ionospheric irregularities generated by HF ionospheric heating facilities. This is to be followed with experimental communication paths constructed with geometries to scatter via the heated volume irregularities, thus providing a new means of connectivity or communication netween distant points. Over-the Horizon radars located in Alaska or near the East Coast of the U.S. will be considered for use together with ionospheric heating facilities also located in Alaska and Puerto Rico, respectively to analyze and provide the best experimental plan. The Phase II program will use the selected geometries, together with appropriate diagnostics to provide a demonstration of the capabilities.