GPS接收机中伪随机码快速捕获技术的研究

薛文芳; 邵定蓉; 李署坚

GPS接收机中伪随机码快速捕获技术的研究

北京航空航天大学电子工程系

详细信息

作者简介:
薛文芳(1974-),男,河南新野人,博士生,100083,北京.

中图分类号: V 241.62⁺4
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- 文章访问数: 2545
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- 被引次数: 2
出版历程
- 收稿日期: 2002-03-18
- 网络出版日期: 2003-06-30

Study on Technique of Fast Acquisition Pseudo Noise Code in GPS Receiver

Dept. of Electronic Engineering, Beijing University of Aeronautics and Astronautics

摘要

摘要: 为缩短GPS接收机捕获伪随机码的时间,分析了与时域滑动相关的常规捕获方法;利用有效星历所提供的先验信息,对伪随机码的搜索范围进行压缩,缩短了伪随机码失锁重捕的时间;分析了采用FFT的快速捕获技术.仿真结果显示捕获速度可以得到显著提高.
- 快速变换 /
- 频域分析 /
- 相关 /
- 多通道 /
- 全球定位系统
Abstract: In order to reduce the time of acquisition pseudo noise code in GPS receiver, the conventional acquisition method slide correlation in the time domain was analyzed. The searching range of pseudo noise code was narrowed utilizing to the information provided by epicheirema. The lost reacquisition time was shortened. The fast acquisition technique using FFT was analyzed. Simulation shows that the acquisition speed can be improved obviously.
- fast transformation /
- frequency domain analysis /
- correlation /
- multi-channel /
- GPS

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参考文献(1)

[1] 张守信. GPS卫星测量定位理论与应用[M]. 长沙:国防科技大学出版社,1996 Zhang Shouxin. Measurement position theory and application of global position system satellites[M]. Changsha:Publishing House of University of National Defence Science and Technology,1996(in Chinese) [2] Harris F. On the use of windows for harmonic analysis with the discrete fourier transform . Proceedings of the IEEE , 1978. 78~83 [3] Holmes J　K, Chen C C. Acquisition time performance of PN spread-spectrum systems[J]. IEEE Trans Comm,1977, 25:778~783 [4] Vannee D J R, Coenen A J R M. New fast GPS code-acquisition technique using FFT[J]. Electronics Letters, 1991,27:158~161 [5] 高文志. 数字信号处理[M]. 济南:山东大学出版社,1996 Gao Wenzhi. Digital signal process [M]. Jinan:Publishing House of University of Shandong,1996(in Chinese)

施引文献

期刊类型引用(2)

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