Systems for determining direction or deviation from predetermined direction

Full Title

Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic or electromagnetic waves, or particle emission, not having a directional significance, are being received (position-fixing by co-ordinating a plurality of determinations of direction or position lines G01S5/00) > using electromagnetic waves other than radio waves > Systems for determining direction or deviation from predetermined direction

Child Classifications

Navigate with arrow keys, Enter to open

• G01S 3/783 using amplitude comparison of signals derived from static detectors or detector systems
• G01S 3/785 using adjustment of orientation of directivity characteristics of a detector or detector system to give a desired condition of signal derived from that detector or detector system
• G01S 3/787 using rotating reticles producing a direction-dependent modulation characteristic
• G01S 3/789 using rotating or oscillating beam systems, e.g. using mirrors, prisms