G PHYSICS
G01 MEASURING; TESTING
G01S RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
19/00 Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
G01S19/01 Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
G01S19/33 Multimode operation in different systems which transmit time stamped messages, e.g. GPS/GLONASS