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Volume 24 Issue 5
May  1998
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Journal of Beijing University of Aeronautics and Astronautics  > 1998  >  24(5): 506-509.
Sun Li, Zhang Qishan. GPS C/A Code Search and Implement in GPS Receiver[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(5): 506-509. (in Chinese)
Citation: Sun Li, Zhang Qishan. GPS C/A Code Search and Implement in GPS Receiver[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(5): 506-509. (in Chinese)
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GPS C/A Code Search and Implement in GPS Receiver

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

  • Received Date: 18 Apr 1997
  • Publish Date: 31 May 1998
    Abstract
  • From GPS signal charcteristics,time/frequency two dimension sequential search principle is introduced in this paper.Three basic sequential search techniques and an improved search technique are compared with performances of false alarm probability,detection probability and searching rate.A digital system based on spread spectrum correlator is proposed and verified for GPS C/A code acquisition,while parameters are trade off for better performance.The improved search algorithm is adopted for shortening average acquisition time and improving acquiring reliability.It has been successfully used in digital GPS receiver.

     

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    • References(1)
  • 1. Spilker J J Jr.GPS signal structure and performance characteristics.Navigation,1978,25(2):121~146 2. Dicarlo D M,Weber C L.Multiple dwell serial search:Performance and application to direct sequence code acquisition.IEEE Trans COM,1983,31(5):650~659 3. Zhuang W.Modeling and analysis for the GPS psedo.|range observable.IEEE Trans AES,1995,31(2):739~751 4. 周荫清随机过程导论北京:北京航空航天大学出版社,1987 5 Tong P S.A suboptimum syschronization procedure for psedo noise communucations systems.Proc National Telecommunications Conference,1973.261~265 6. Kaplan E D.Understanding GPS:Principle and application.Boston:Artech House,1996
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