An immune proportional-integral-derivative(PID)controller based on the immune feedback mechanism is studied,which is applied in the process of the attitude control under all kinds of disturbances on sea to ensure the communication between the antenna and the satellite with high quality when the floating small-sized antenna tracks the target satellite.The various disturbances are studied and the immune PID controller based on the immune feedback mechanism and PID is designed to reject the disturbances on sea...