Systems for determining direction or deviation from predetermined direction

Official title: Systems for determining direction or deviation from predetermined direction {(aerial arrangements for changing or varying the orientation or the shape of the directional pattern H01Q3/00; combinations of different interacting aerial units for giving a desired directional characteristic H01Q21/29; aerials or aerial systems providing at least two radiation patterns H01Q25/00)}

G01S3/14 (Systems for determining direction or deviation from predetermined direction) appears on 2,138 US grants and 1,838 published applications in this corpus.