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Linear Quadratic Gaussian optimal control which is namely LQG control algorithm, is superior to PI control algorithms in control performance, such as adjusting time and overshoot. In closed-loop system, LQG has good anti-interference ability and stability. In order to reduce the pointing error and tracking error, to ensure the direction accuracy and tracking accuracy of the ship borne UXB antenna, the LQG controller is designed and the mathematical model is set up. Finally, using MATLAB software to build a model and the simulation experiment is carried out by based on the designed LQG controller.

A simplified mathematical model for modulation and demodulation of a single channel monopulse (SCM) system is proposed, which is based on a ship-borne pulse radar S-band guided receiver. Using the proposed mathematical model, the modulation and demodulation of single-channel and multi-channel signals were simulated respectively, and the factors influencing the modulation and demodulation of the SCM system were analysed.

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