期刊文献+

高动态多普勒条件下伪码快速捕获技术 被引量:5

Fast PN Code Acquisition Technology Research in High Dynamic Doppler Shift Situation
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摘要 在扩频通信中,伪随机码的捕获是系统的核心和关键技术。在高动态多普勒存在的条件下,传统的伪码捕获方法捕获时间较长。本文详细介绍了一种基于部分匹配滤波(Partial matched filtering,PMF)与快速傅里叶变换(Fast Fourier transform,FFT)相结合的伪码快速捕获方法,使其对多普勒频移的使用范围大大提高,缩短了伪码捕获时间。最后用Matlab进行了仿真,验证了该方法的正确性和有效性。 Fast PN code acquisition is a key technique in spread spectrum communication system. Traditional PN code acquisition algorithm costs comparatively long time in highly dynamic Doppler shift situation. An algorithm based on partial matched filtering (PMF) and fast Fourier transform(FFT) is analyzed. The method enhances the usable range of Doppler shift and shortens the time of PN code acquisition. The simulation by using Matlab verifies that the algorithm is correct and effective.
出处 《数据采集与处理》 CSCD 北大核心 2008年第B09期101-104,共4页 Journal of Data Acquisition and Processing
关键词 捕获 多普勒频移 部分匹配滤波 快速傅里叶变换 acquisition Doppler shift partial matched filtering fast Fourier transform
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参考文献6

  • 1Cheng U, Hurd W J. Spread-spectrum code acquisition in the presence of Doppler shift and data modulation [J].IEEE Trans on Communications, 1990, 38(2) : 241-250.
  • 2曾兴雯.通信中的扩展频谱技术[M].西安:西安电子科技大学出版社,1995..
  • 3Kaplan,E.D.邱致和,王万义译.GPS原理与应用[M].北京:电子工业出版社,2002.
  • 4New fast GPS code-acquisition technique using FFT[J].Electronics Letters, 1991,27(2) : 158-160.
  • 5Spangenberg S M. An FFT-based approach for fast acquisition in spread spectrum communication systems[J]. Wireless Personal Communications, 2000, 13(1/2) : 27-56.
  • 6郭肃丽,刘云飞.一种基于FFT的伪码快捕方法[J].无线电通信技术,2003,29(1):11-13. 被引量:23

二级参考文献3

  • 1Akira OGAWA. CDMA for Personal Communications Based on Low Earth-Orbital Satellite Syslems. IEICE Trans. on Fundamentals, 1997, E80- A(12).
  • 2Unjeng Cheng, William J.Hurd. Spread-Spectrum Code Acquisition in the Presence of Doppler Shift and Data Modulation.IEEE Trans. on communications, 1990,38(2).
  • 3Sascha M. Spangenberg. An FFT-Based Approach for Fast Acquisition in spread Spectrum Communication Systems. Wireless Personal Communications, 2000.5,13 (1 - 2).

共引文献58

同被引文献34

  • 1许晓勇,陈华明,王飞雪.基于匹配滤波方法的直接序列扩频系统伪码捕获性能分析[J].测绘科学,2008,33(S1):104-106. 被引量:4
  • 2彭兆军.基于FPGA的数字控制振荡器的设计与实现[J].数据采集与处理,2010,25(S1):174-176. 被引量:1
  • 3徐峰,邵定蓉,李署坚.一种高动态直扩接收机快速码捕获方法[J].北京航空航天大学学报,2007,33(6):672-676. 被引量:10
  • 4Chawla K K, Sarwate D V. Parallel acquisition of PN sequences in DS/SS systems[J]. IEEE Transactions on Communication, 1994,42(5) :2155 -2164.
  • 5Spangenberg S M. An FFT-based approach for fast acquisition in spread spectrum communication systems [ J ]. Wireless Personal Commun cat ons,2000,13 (1/2) :27 - 56.
  • 6胡广书.数字信号处理一理论、算法与实现[M].北京:清华大学出版社,2007:137-138,303-307.
  • 7BORIO D, CAMORIANO L, LOP L. Impact of GPS acquisition strategy on decision probabilities[J]. IEEE Transactions on Aerospace and Electronic Systems, 2008,44(3) :996-1011.
  • 8YANG C. FFT Acquisition of Periodic, Aperiodic, Puncture,and Overlaid Code sequences in GPS[C]. Salt Lake City: Proc. of ION GPS 2001, 2001: 137-147.
  • 9IRFAN A. Doppler characterization for LEO satellites [ J ]. IEEE Trans on Communications,1998,46(3) :309-313.
  • 10LEE J, KANG S. Satellite over satellite (SOS) network: a novel ar- chitecture for satellite network [ C ]//Proc of IEEE INFOCOM. [ S. 1. ] : IEEE Press,2000:315- 321.

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二级引证文献16

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