Geoloc Corporation develops software solutions of radio remote sensing problems, improving the performance of GPS, SAR, Radar, passive imagers, and other radio geolocation systems. The firm offers professional consultation and software development for achieving high performance in radio remote sensing systems, featuring effective compensation for atmospheric contributions. ITRAY executables and supporting documentation are also offered for sale.Geoloc's proprietary Ionosphere and Troposphere Ray Trace Model (ITRAY), an extension of the RIBG (Raytrace/ ICED, Bent, Gallagher) model developed by Dr. Michael H. Reilly at he Naval Research Labratory, accurately models the contributions of ionosphere and troposphere to radio systemdata. ITRAY Features:* A global climatological ionospheric electron density model * A modified Hopfield tropospheric model * Height coverage from the surface up to the plasmapause * A comprehensive 3D ray trace propagation model * Capability for being updated in near-real-time by GPS and other external data sets. * General applicability at HF or higher frequencies