Research on Broadband, Intelligent, and Light PZT Servo Technique of Light Beam
|School||Changchun University of Science and Technology|
|Course||Information and Communication Engineering|
|Keywords||space laser communication PZT driver APT fine tracking unitcompensation|
Space laser communications have many significant features, such as large capacity, wide bandwidth, anti-jamming, stronger anti-intercepted capacity and higher safety and reliability, Acquisition, Pointing, and Tracking are core technology in the atmospheric laser communications system, the key points of APT technology is controlling technology of fine tracking servo system.The article firstly describes space optical communication system, put forward a system based on PZT driver two-dimensional fast sweep galvanometer to achieve precise targeting. In this paper, the PZT precision detection compensation circuit was designed, the composition and working principle of the system was researched, intelligent digital control unit of basing on DSP2811was designed, The result shows that the controlling precision can reach to3urad, which grounds the engineering reality of space optical communication system.