根据机载通信终端的尺寸和应用环境设计了精跟踪系统,并开展了室内和室外模拟实验.在室内构建机载平台振动模拟系统,通过FPGA控制快速倾斜镜的偏转来模拟平台振动对光束影响,测试了精跟踪系统在Altair无人机平台振动环境下的性能,实验结果分析发现,精跟踪能有效抑制Altair无人机平台振动对光束的扰动.在外场开展了动态跟踪和单向通信实验,将接收端置于一维旋转台上,通过旋转台实现对机载通信终端的相对运动的模拟;实验结果分析发现,机载精跟踪系统能够对粗跟踪控制残差进行有效补偿,并能抑制信号光与信标光的抖动,提升信号光功率.%According to the size and application environment of the communication terminals,the fine tracking system is designed and evaluated in the indoor and outdoor simulation experiments.The vibration simulation system is built in laboratory,which uses the Fast Steering Mirror to simulate the influence of the airborne vibration to the beam.The performances of the fine tracking system is validated by the simulation system and the experiment results prove that the fine tracking system can effective restrain the destabilization of laser beam.The dynamic tracking and one-way communication experiments are carried out in outdoor.The transmiring terminal is static and the receiving terminal is laid on the rotation platen.The rotation platen is used to simulate the relative motion of the communication terminals.The experiment results prove that the fine tracking system can effective restrain the destabilization of laser beam and stabilize communication link.
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