基于ATP系统的非机动目标跟踪实验

Experiment of non-maneuvering target tracking based on ATP system

考虑到无线光通信的捕获、瞄准和跟踪(ATP)系统对信标光斑实时、准确跟踪的需求,采用具有高频、大幅度补偿能力的音圈电机作为精跟踪执行部件,以此搭建了基于PC机控制的无线光通信演示实验系统。进行了不同速度下的非机动模拟跟踪实验,分别采集、分析并评价了粗跟踪和精跟踪的跟踪误差,并实时采集了通信光光功率。实验结果表明:ATP系统的跟踪误差标准差随着模拟目标运动速度的增加而增大,误差变化范围却无较为明显的规律,系统可长时间保持通信链路;此外,粗跟踪误差曲线中多次出现的误差尖峰可能与粗大值有关。

For the need of accurate and realtime tracking of the beacon facular for acquisition,tracking and pointing（ATP） system of free-space optical communication,the experimental system was established for free-space optical communication,whose executing part for the fine tracking was the voice coil motor with high frequency and good performance for error compensation which was and controlled by personal computer.Further simulative tracking was done with non-maneuvering in different speed,and the data of tracking error for fine tracking and coarse tracking was collected,analyzed and evaluated respectively.The real-time optical power of communication laser was also collected.The experimental results show that the standard deviation for ATP system tracking error increases with the increase of target speed,while the range of tracking error appears to be in no order.Furthermore,the communication link can be hold for a long time.At last,the occurrence of abnormal value of coarse tracking error may be caused by wild value.