pulse-position modulation opical tracker

例句：

1. 1. 脉冲位置调制
   Pulse-Position Modulation, PPM
2. 2. 光学追踪器
   Optical Tracking Device
3. 3. 光标跟踪器
   Tracking Device for Optical Markers
4. 1.The pulse-position modulation system accurately tracks the movement of the robotic arm.
   脉冲位置调制系统能够准确地追踪机器人手臂的运动。
5. 2. The optical tracking system is used to measure the distance between two points on a computer screen.
   光学追踪系统用于测量计算机屏幕上两点之间的距离。
6. 3. The optical tracker was crucial in enabling the camera to follow the moving target accurately.
   光学追踪器在使相机能够准确追踪移动目标方面起到了关键作用。