The Beidou double-star Positioning and Navigation System is one kind of positioning system for local area. The disadvantage of double-star positioning system is discussed and it is capable of accomplishing high-precision passive positioning when aided by pseudolites.
北斗双星导航定位系统是我国自行建立起来的一种区域性定位系统。
参考来源 - 基于伪卫星的提高北斗定位精度的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
本文在北斗双星有源定位系统的基础上进行了三星无源定位的研究。
Basing on the Double star Active Positioning System, this article conducted the research on the Beidou Tri-star Passive Positioning System.
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.
基于卫星载波相位干涉测量原理，研究了利用北斗双星系统确定车辆航向的相关技术。
Based on interferometry measurement theory of satellite carrier phase, the technology of land vehicle heading determination through Beidou Bi-Satellite System was studied.
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