Some automatic control circuits for radar receivers

Automatic control circuits developed for radar receivers include frequency control, gain control, gain equalization of two receiving channels, and rapid variation of gain with time in accordance with a predetermined law. This paper summarizes the various problems which have been encountered, under the above headings, and the techniques evolved for dealing with them. Examples are given of practical systems. A theoretical treatment of a.f.c. discriminators which combine the function of pulse integration is given in an Appendix.