(1) Radio navigational services are services by which it is possible to determine the position, speed, orientation, route or other characteristics of an aircraft or vessel, or obtain information regarding such parameters, using radio waves.
(2) Radio navigation services are of two categories-
(a) aeronautical radio navigation, being navigational services provided to aircraft for satellite, signal collection stations, located on board the aircraft; and
(b) maritime radio navigation, being radio navigation services provided to navigable vessels and for satellite, signal collection stations located on board the vessels.