Radio compass and means for controlling its motor

Abstract

Abstract A RADIO COMPASS HAS TWO CROSSED LOOPS WITH OUTPUTS NORMALLY BLOCKED BY SERIES CAPACITANCES AND DIODES, THESE LOOPS BEING MADE ALTERNATELY OPERATIVE BY ENERGIZATION IN PHASE OPPOSITION WITH A LOW FREQUENCY SQUARE WAVE. THE COMBINED OUTPUT CURRENTS GENERATED IN THE LOOPS ARE FED TO A PHASE DISCRIMINATION RECEIVING THE SAME SQUARE WAVE AS A REFERENCE OSCILLATION, THEREBY GIVING RISE TO A CONTROL VOLTAGE APPLIED TO A REVERSIBLE DRIVE MOTOR FOR THE ROTATABLE LOOP ARRAY. SIGNALS PICKED UP BY A JUXTAPOSED OMINIDIRECTIONAL ANTENNA MAY BE INTERMITTENTLY SUPERIMPOSED UPON THE LOOP OUTPUT BY A MANUAL SWITCH OR BY A TRAIN OF MONITORING PULSES TO PROVIDE AN UNAMBIGUOUS INDICATION OF THE ORIGIN OF THE RECEIVED RADIATION, IN THE LATTER CASE THE MONITORING PULSES MAY BLOCK THE INPUT CIRCUIT TO THE MOTOR DURING OPERATION OF A BALANCED ZERO INDICATOR RESPONSIVE TO THE COMBINED OUTPUT SIGNALS.

Inventors

• 👤 Gaston Raoul Salmet

Bibliographic Details