Evaluation of Modern HF Ray Tracing Open PDF Document Details Document Type Technical Report Publication Date Nov 01, 1999 Accession Number ADA390752 Entities People Neil C Rogers Tags Communities of Interest Energy and Power Technologies Space DTIC Thesaurus Topics Accuracy Air Force Research Laboratories Artificial Satellites Computer Programs Contracts Electron Density Intellectual Property Ionograms Ionosondes Ionosphere Ionospheric Models Low Elevation Measurement Models Radio Equipment Ray Tracing Two Dimensional