Now planned for commercial use, the eye tracker works by shining two invisible infrared lights at the user.
现在想想这个技术用于商业用途，基本原理是用两束不可见的红外光来照射用户。
2
The measurements of the spacecraft star navigation system are provided by star tracker and infrared accelerometer.
星光跟踪仪提供天顶距的测量数据，红外高度测量仪提供航天器的高度数据。
3
To evaluate the infrared imaging track algorithm, a system for infrared imaging tracker and related interface circuit for the tracker capability evaluation system is introduced.