ANORDNING I ETT RADARSYSTEM FOR KORREKTION AV FAS- OCH AMPLITUDFEL, SOM UPPSTAR I KVADRATURDETEKTORN

摘要

An arrangement is provided for correcting the phase and amplitude errors occurring in the quadrature detector of a Doppler radar system. A correction unit (KE) is connected to both analogue-digital converters (AD1, AD2) in the I and Q channels to receive a radar signal which has been received by the system antenna and phase-detected in the quadrature detector (FD1, FD2, FS). The output of the correction unit (KE) is connected to a regulating network (RN) for sensing the output signals from the correction unit (KE) and controlling the latter so that the amplitude and phase errors (a' and theta ') will be zero.