天文学家对本周的象限仪座流星雨进行了观测，然而他们更多的是沉醉在星光之下，而非忧虑。
Though as stargazers look up at the sky for this week's Quadrantid meteor shower, they are more likely to enjoy the beauty of the sight than feel anxious.
利用星敏感器和地平仪测量“星光仰角”，进行自主导航方案设计。
An autonomous navigation scheme is designed by using the star sensor and horizontal instrument to observe the elevation Angle of star.
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。
The measurements of the spacecraft star navigation system are provided by star tracker and infrared accelerometer.
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