Radar altimeter with frequency modulation II for low altitudes

摘要

The connection has two same, alternately switching high-frequency channels for altitude measuring, which have one common decoding circuit of the measured differential frequency. The actuating of both transmitters by high-frequency signal is also realised from the one source of the signal. The using of one source of the high-frequency signal and one decoding circuit with using two high-frequency channels for altitude measuring causes, that the resulting discretion of altitude measuring is reduced to approximately half value.