using radio waves (G01S19/00 takes precedence)

Full Title

Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith (position fixing by co-ordinating a plurality of determinations of direction or position lines G01S5/00) > using radio waves (G01S19/00 takes precedence)

Child Classifications

Navigate with arrow keys, Enter to open

• G01S 1/022
• G01S 1/04 Details
• G01S 1/08 Systems for determining direction or position line
• G01S 1/68 Marker, boundary, call-sign, or like beacons transmitting signals not carrying directional information