Design And Implementation Of Hardware Circuit Of Laser Channel Simulator Based On Intensity Modulation

Tracking,telemetry and command(TT&C)system is an important part of space activities,completing tracking and orbit measurement,telemetry,telecontrol and communication for spacecraft.The quality of communication link is the key for data transmission during communication between TT&C systems,moreover,emerging laser satellite communication known as the next generation of space communication technology,has much more excellent characteristics,high speed,large-capacity communication,anti-interference,which means it's the best way to achieve high-speed and real-time transmission demand.Considering stability and reliability of communication system,a large number of link experiments are necessary to ensure communication quality,but it's difficult to realize in testing cost,research period and testing completeness.In order to adequately verify the performance of laser TT&C system,it is significant to develop laser channel simulator that is effective to conduct verification on ground.Basing on the project demand,the paper does some researches on laser channel simulator,design and implementation of hardware circuit of laser channel simulator based on intensity modulation.The contents of work are summarized as follows:1.The principle and methoed of laser channel simulation based on intensity modulation are studied,design and implement hardware circuit of high speed signal processing according to the requirement of simulator.2.According to circuit design,test the hardware and verify correctness of design.