The high precision multi-target acquisition, pointing and tracking (APT) technology under satellite micro-vibrations is urgently required with the increasing demand on space science missions. This paper thus presents one APT system simultaneously exhibiting the high accuracy and multi-target laser link functions. The performance of the APT system is investigated through verification simulation considering the influence of the carrier satellite. Furthermore, the prototype of the APT is developed, which consists of one target motion simulation unit and one acquisition, pointing and tracking unit. The prototype system can simulate multiple targets with the angle motion accuracy better than 0.081μrad, while the pointing and tracking accuracy of the prototype is better than 0.207μrad under the lab environment vibrations. The proposed ground experimental prototype system is greatly beneficial to enhance the ability to construct multiple space laser links over a long distance.

中文翻译：

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卫星微振动下的高精度和多目标采集，指向和跟踪

随着对太空科学任务的需求不断增加，迫切需要在卫星微振动下使用高精度多目标采集，指向和跟踪（APT）技术。因此，本文提出了一种同时显示高精度和多目标激光链接功能的APT系统。APT系统的性能通过考虑载波卫星影响的验证模拟进行研究。此外，还开发了APT的原型，该原型由一个目标运动仿真单元和一个获取，指向和跟踪单元组成。该原型系统可以模拟多个目标，其角度运动精度优于0.081μrad，而在实验室环境振动下，其指向和跟踪精度均优于0.207μrad。