detection units

This article researched point-ahead servo control technology in space laser communications subsystems APT,this system was composed of point-ahead detection unit and point-ahead execute unit.In the design of detection unit,carried out the analysis and chi hair straighteners simulation for the factors that affect the detection accuracy as well as the design of QD pre-amplifier、pre-signal circuits、analog-to-digital conversion circuits and control hair straighteners circuits. In the design of point-ahead execute unit,the main design is FSM selection and control of FSM.Including the design of DA and FSM interface.By Combining with spot detection units,designed point-ahead servo cheap ralph lauren polo shirts execute control systems and placed emphasis on stability and selected a reasonable bandwidth so as to realize the high-precision detection.As the information adjusted by chi dazzle point-ahead servo control depended on GPS / INS data, the updated data frequency is usually lower than the 10Hz,So it did not need to have high bandwidth.Whether satellite to space Laser Communication Systems or ralph lauren polo shirts satellite to land laser communication systems,the adjusted amount of point-ahead is no more than 100μrad.
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