Abstract

The automatic gain control (AGC) of a conical scan tracking radar DF amplifier is designed using H-infinity, synthesis. It is shown that this technique is particularly suited for this problem because of its loop shaping capabilities and because it can tickle particular frequencies effectively, providing a correct balance among closed-loop stability; fast response to echo changes, and rejection of frequencies other than the echo modulation. Two controllers art implemented and compared with a standard controller, showing significant improvement in system tracking.