Computational Physics, Inc. (CPI) is a research and development (R&D) company founded in 1984 to provide basic and applied science support to various U. S. Government organizations and prime contractors. CPI has a diverse set of customers that include government (DoD and civilian), Federally Funded Research Development Centers (FFRDCs), university laboratories, and private companies.CPI's original areas of expertise were scientific research on the radiation properties of the Earth's upper atmosphere, and developing new remote sensing techniques for better understanding of the upper atmosphere and ionosphere. CPI continues to be active in these areas, but has also broadened its work to address remote sensing of the Earth's complete environment, including the terrain, oceans, the lower and middle atmospheres (including clouds), ionospheric effects on signals, data assimilation techniques for specification of the state of the global ionosphere, and architectures and techniques for integration of satellite ground data processing systems.