The theoretical foundations of radio navigation are presented. The principles of building onboard radio navigation equipment, as well as their role in solving the tasks of navigation support for aircraft, are considered. Main characteristics, structural diagrams, principles of navigation information processing in radio navigation devices and systems are given. Prospects for the development of airborne radio navigation equipment are shown. Meets the requirements of the Federal State Educational Standard for Higher Education of the latest generation. For teachers, students and cadets of radio engineering specialties of universities. It can be useful to scientific and engineering workers of airlines, specialists of combat units of the Air Force.