The passive positioning tracking system can classified according to its components into two types: multi-station system and single-station system.
根据系统的组成结构,无源定位跟踪系统大致可以分为两大类型:多站系统和单站系统。
参考来源 - 无源探测定位技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The BD receiver can measure the pseudo distance between the satellite and the user, so that it can work in the passive positioning system.
目前已经能够研制出测量用户至卫星伪距信号的“北斗”用户接收机，此款接收机可以工作在无源定位的情况下。
Basing on the Double star Active Positioning System, this article conducted the research on the Beidou Tri-star Passive Positioning System.
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。
Simulation results of the algorithm show that the method has good convergence rate and precision that meet the demand of passive positioning of Beidou system.
仿真实验结果证明，该搜索定位算法运算速度快，并且具有较高的定位精度、和较好的收敛性。
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