172239 ⎘
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 using radio waves; Systems for determining direction or position line; Rotating or oscillating beam beacons defining directions in the plane of rotation or oscillation; Broad-beam systems producing at a receiver a substantially continuous sinusoidal envelope signal of the carrier wave of the beam, the phase angle of which is dependent upon the angle between the direction of the receiver from the beacon and a reference direction from the beacon, e.g. cardioid system wherein the phase angle of the direction-dependent envelope signal is compared with a non-direction-dependent reference signal, e.g. VOR
Terrestrial position and timing system
#2Systems and methods for efficient reception and combining of similar signals received on two or more antennas
#3Systems and method for AIS transponder integration with ILS/VOR receivers
#4MONITORING DEVICE AND DOPPLER VOR SYSTEM
#5Systems and methods for efficient reception and combining of similar signals received on two or more antennas
#6Terrestrial position and timing system
#7Phase correction apparatus, DVOR apparatus, and phase correction method
#8DVOR monitor device, and DVOR monitor method
#9VOR monitoring receiving apparatus and VOR monitor receiving method
#10DVOR apparatus and sideband antenna fault detecting method
#11System and method for generating a very high frequency omnidirectional range signal
#12METHOD AND SYSTEM FOR USING DATABASE AND GPS DATA TO LINEARIZE VOR AND ILS NAVIGATION DATA