Abstract
Abstract Aiming at the problem that the guidance accuracy of strapdown guided air-to-ground missile is poor and it is difficult to meet the demand of precise strike to ground target, a design method of strapdown guided PD proportional guidance law is proposed. Firstly, an improved α–β–γ filtering method is designed to estimate the angular velocity of line of sight(LOS) and angular acceleration of LOS of strapdown guidance. Then, the PD proportional guidance method is formed by using the estimated angular velocity of LOS and angular acceleration of LOS. Finally, the simulation compares the proportional guidance law based on the estimated angular velocity of LOS with the PD proportional guidance law based on the estimated angular velocity of LOS and angular acceleration of LOS. The simulation results show that the proposed PD proportional guidance law can effectively improve the strapdown guidance accuracy.
Published Version
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