This handbook serves as a comprehensive, systematic reference to the major mathematical models used in radio engineering and communications, and presents computer simulation algorithms to help the reader estimate parameters of radio systems. It provides the technical details necessary to design and analyze radar, communication, radio navigation, radio control, electronic intelligence and electronic warfare systems. Mathcad routines, cited in the handbook, should help the reader to optimize radar system performance analysis, and can be used to create custom-made software that better answers specific needs.