AZIMUTH V.O.R. TRANSMITTER WITH PHASE DISTORTION COMPENSATION

摘要

A transmission device of a radiographic navigation system for azimuth determination, notably of a V.O.R. system, in which an electronic rotating directional beam pattern and a static omnidirectional phase reference beam pattern are generated. The transmission device is of a solid state construction. For obtaining exact phase relationships between the signals required for generating the said beam patterns, phase control loops are included in the signal paths; in these loops the carrier wave frequencies are transposed to a lower frequency and the modulations are removed before phase comparison measurements are performed.