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。
This paper introduces a user terminal equipment for the double-satellite positioning system. The terminal, named continuous navigation passive positioning system, is based on Rubidium atomic clock.
介绍了一种基于铷钟的双星系统用户终端机——连续导航无源双星定位系统。
Global Positioning system (GPS) aided passive imaging navigation system is presented in this paper.
本文介绍的是一种GPS辅助的被动成像导航系统。
The traditional passive location method is cross positioning. But its accuracy is too low to fulfil practical requirement.
传统的无源定位方法大都采用多个接收机测向，交叉定位，但其测向精度低，难以满足实际需求。
The theory and method of the region passive pseudolites positioning based on geostationary satellite positioning system are systematically discussed.
本文系统地讨论了基于双星的伪卫星无源区域定位系统的定位理论以及方法。
Combining the traditional acoustic positioning system with the vector hydrophone, we have designed a new portable system named as the long base line passive acoustic positioning system.
将传统的水声定位系统与矢量水听器相结合，设计了一种全新的轻便型长基线被动水声定位系统。
A simple practical implementation of positioning system with passive acoustic sensor arrays for localizing helicopter was presented.
利用简易被动声传感器阵列进行直升机目标定位。
A simple practical implementation of positioning system with passive acoustic sensor arrays for localizing helicopter was presented.
利用简易被动声传感器阵列进行直升机目标定位。
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