轨道跟踪 meaning in English

orbital tracking

So how does the laser pickup system stay on track and in focus
那么，激光拾取系统如何聚焦并实现轨道跟踪呢？
Satellite orbital track
卫星轨道跟踪
The central beam and one beam on each side are used by the cd for the tracking system
主光束和两边各一个副光束被用于轨道跟踪系统。
The main central peak and two side peaks are important in the tracking mechanism
其中心主峰值和两个副峰值对于轨道跟踪机构非常重要。
The servo system is responsible for the focusing and tracking of the laser beam on the cd
伺服系统负责激光束在光盘上的聚焦和轨道跟踪。