Star navigation is an autonomous navigation system.

星光导航是一种自主导航系统。

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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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This thesis analyzes the principle and architecture of three-star navigation system based on "Beidou" system and investigates the problems related with positioning precision.

本论文分析了基于北斗导航定位系统的三星定位系统总体结构和工作原理，对卫星导航中与定位精度有关的部分进行了研究。

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While most of you probably carry an all-in-one NAV with a built-in GPS receiver, the MG-920 is designed to connect to Bluetooth navigation systems that need a little help syncing with satellites, and although the SiRF Star III LP chip and rechargeable Li-ion cell are entirely average, the bottom-mounted FM transmitter allows a turn-by-turn instructor to be channeled to one's FM radio.

ENGADGET: Mainnav MG-920 Bluetooth GPS receiver touts FM transmitter