| 摘要 |
PURPOSE:To make it possible to carry out tailing of high accuracy by treating a tailing reference signal and a tailing error signal by a single channel. CONSTITUTION:A beacon wave 28 of an elliptically polarized wave is injected in an antenna 1, and converted in a linear polarized wave by a 90 deg. phase difference plate, and branched through a 180 deg. phase difference plate 33 by a polarized wave branching device 35. A reference signal 40, a modulated cross polarized wave error signal 46, and a modulated angle error signal 48 are combined by a combiner 6 and supplied to a receiver. In the receiver, the reference signal is subjected to AGC amplification by an AGC amplifier circuit 9 and to phase synchronization by a phase synchronizer circuit 15, and a composite signal including the error signal AGC- amplified by the AGC amplifier ciruit 9, and thereafter band-restricted by a distributor 11, and a composite output signal 50 is supplied as output. The cross polarized wave error component is demodulated through detectors 54, 55, 57 and 58 and controls phase difference plate driving devices 32 and 34 through servo amplifiers 59 and 60. |
