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北斗双星定位系统(简称双星定位)是我国自行建立的一种定位系统。
Beidou double-star positioning system is built up by our country.
根据北斗双星定位系统（简称双星定位）的特点，提出了北斗双星与SINS组合的最优预测模型。
According to the characteristic of Beidou double-star positing system(double-star positoin), this paper puts forward the optimal predication model of double-star position/SINS integrated system.
介绍了北斗双星定位系统的特点、功能、系统组成和工作原理，说明了北斗有源定位方式在应用方面的局限性。
The characteristics, function, structure and principle of the BeiDou Dual-Satellite Navigation System are described, and the limitation of the BeiDou's active location in application is discussed.
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