| Because of simple design and precision, Guided Bomb Unit (GBU) became a kind of precision guided weapon which have been used in large number in every countries' attack plane. Seeing from the current engineering technique level, developing and arming GBU is a low investment and quick bear fruit conveniently way to help our airman effectively promote ability of attack to ground .The project comes from cooperation about the GBU between Dept. of Astronautic Engineering in HIT and Sichuan Aerospace Industry Corporation. The article mainly did some research on guidance system and control system of the GBU. Moreover, result is verified by mathematic simulink.First, model of trajectory pursuing is built up. Considering use of BTT control technology, differently controller is devised for flight path based on PD and LQR theory. Then, the result of two controller is compared.Second, GBU's Autopilot is designed for BTT plan. According to traditional plan, controller for 3-channel is devised independently after simplifying and decoupling. Then, coupling among 3-channel is constrained by channel for Coordinate and decoupling. The programming of GBU's Autopilot have finished.Thirdly, some research have been done about navigation system of the GBU. The mathematic model of Strap down Inertial Navigation System (SINS) are presented in the paper. The quaternion algorithm is used to calculate the Strapdown matrix. The information of the attitude angels, velocity and position are obtained. Model of error is also presented, so as to analyze error of SINS.Finally, the simulink for all system is conducted based on model built up in fore several chapter. That includes mathematical simulink for perfect state. Monte-Carlo target test for being in turmoil and real-time simulink by Matlab/Simulink/xPC.
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