...双星定位; 原理; 方法; 算法中图分类号: U 666 文献标识码: A 文章编号: 1008 -9268( 2007) 02 -0025 -031 引 言卫星导航技[gap=4249]Key words: Beidou; double satellite positioning; theory; method; algorithm272007.
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The crucial technique of system of double-satellites localization lies in the estimation of TDOA and FDOA with high precision.
双星定位系统的关键技术在于对到达时间差(TDOA)和到达频率差(FDOA)的高精度估计。
参考来源 - 卫星干扰源时延和频移定位参数估计方法的研究In this system, the PN codes acquisition and tracking , carrier wave's frequency and phase tracking are critical. This paper investigated several key problems of the implementation of two-satellite positioning digital de-spreading receiver with field-programmable gate array (FPGA).
双星定位系统中,扩频信号的捕获与跟踪、载波频率与相位的跟踪是关键。
参考来源 - 双星定位解扩接收机This thesis analyzes the principle and architecture of twin-satellite positioning system and investigates the related circuits. Twin-satellite positioning system's test signal source, demodulate circuit, despread circuit are modeled and realized with simulation tool, SystemView.
本论文分析了双星定位导航系统的总体结构和工作原理，对双星定位导航系统的相关电路进行了研究，并利用通信仿真平台System View建立了双星定位导航系统的导航定位信号源以及导航信号的解调解扩电路仿真模型，重点仿真和研究了扩频信号的捕获跟踪。
参考来源 - 双星定位系统扩频信号捕获跟踪及相关技术研究And finally, the paper discusses simply the positioning principle of the two-satellite positioning and communication systems.
最后，简单介绍了双星定位及通信系统的定位原理。
参考来源 - 一种适于卫星定位与通信系统的扩频ALOHA信道模型·2,447,543篇论文数据，部分数据来源于NoteExpress
双星定位系统是一种区域性定位系统。
Double star position system is one kind of regional position system build up.
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.
介绍了双星定位系统的定位原理，说明了其存在的定位实时性较差的不足。
The position principle of Double star position system is introduced, and its shortcoming that is the bad real time of position is explained.
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