Radio Navigation
摘要
This chapter is dedicated to radio navigation systems, following a brief reminder of radio wave physics, with a view to the practical applications in aviation. All types of radio location systems used in air navigation are presented, from the oldest radio goniometers and radio telemeters to terrestrial radio positioning systems and landing systems. Section 8.3 presents global navigation satellite systems (GNSS). A synthetic study of surveillance systems is given next. As radio navigation systems and radio communication systems are on a convergent course, Sect. 8.5 is dedicated to those digital communications systems which are relevant to air navigation.