Research of target accurate tracking and controlling based on opto-electronic platform

According to the requirement of high accurate tracking target for ground-based opto-electronic system, control system architecture in electro-optical platform plays a key role in this situation. The three-axis control system and compound-axis control system are presented. The typical unit of control system and tracking mode has been researched significantly. With the development of the technique of digital circuit and embedded system, control system includes more and more digital units. So this paper thinks that it is not suitable to make use of only continuous unit or only discrete unit when setting up control system models. A new method of combining continuous unit and discrete unit is suggested to solve this problem. At the same time, the models and algorithms of two units are established, by which mathematical models of lead-tracking, auto-tracking and compound-axis tracking have been implemented. Experiment is taken to test performance of the three tracking modes. The experimental results show that compound-axis tracking accuracy is as high as +/-1" arcsec.