Tracking strategy of three-axis photoelectric tracking system based on adaptive genetic algorithm

With a redundant degree of freedom, three-axis photoelectric tracking system can solve the problem of spatial blind region existing in two-axis photoelectric tracking system, and it can track the target in the whole space. Based on the movement analysis of three-axis photoelectric tracking system, the kinematic model of the system with a redundant degree of freedom is built using quaternion method. Then, a new three-axis tracking strategy is designed based on adaptive genetic algorithm (AGA). The simulation and experiment results indicate that AGA tracking strategy can avoid the spatial blind region without using the switching strategy of two different axes in three-axis system, and it can realize three-axis linkage continuous tracking movement rapidly and accurately in the whole space. Furthermore, compared with existing two-axis tracking strategy and three-axis switch tracking strategy, the AGA tracking strategy reduces the rotating angles by over 30%, improves the tracking performance of the system; and the tracking capability is increased by more than 30%.