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。

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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。

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