CPC Subgroup
G01S 1/04 Details
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) > Details
4 direct subcodes
Child Classifications
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- G01S 1/06 Means for providing multiple indication, e.g. coarse and fine indications