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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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GPS L5 Acquisition Schemes for Fast Code Detection and Improved Doppler Accuracy

  • Joo, In-One (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Sin, Cheon-Sig (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Lee, Sang-Uk (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI) ;
  • Kim, Jae-Hoon (Broadcasting & Telecommunications Convergence Research Laboratory, ETRI)
  • Received : 2009.09.25
  • Accepted : 2009.11.12
  • Published : 2010.02.28
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Abstract

In this letter, we propose GPS L5 acquisition schemes to detect a fast code phase and improve the accuracy of the Doppler frequency. The proposed approach is based on the code-phase changes which occur during the acquisition processing time originating in the Doppler frequency. The proposed schemes detect a fast code phase within about 1 chip near the estimated code phase and improve the accuracy of the Doppler frequency by up to about 4 times in comparison with the popular Septentrio receiver. The feasibility of the proposed schemes is demonstrated through simulation.

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References

  1. S. Gunawardena, Z. Zhu, and M. Brrasch, "First Look: Observing the GPS L5 Test Transmission from SVN49 Using Software Radio Processing," Inside GNSS, May/June 2009, pp. 22-29.
  2. IS-GPS-705, Navstar GPS Space Segment/User Segment L5 Interfaces, ARINC Incorporated, 2005.
  3. C. Mongredien, G. Lachapelle, and M.E. Cannon, "Testing GPS L5 Acquisition and Tracking Algorithms Using a Hardware Simulator," Proc. ION GNSS, 2006, pp. 2901-2913.
  4. W. De Wilde, J.M. Sleewaegen, and A. Simsky, "New Fast Signal Acquisition Unit for GPS/Galileo Receivers," Proc. ENC GNSS, Manchester, May 7-10, 2006.

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  2. 정밀항법 시스템 설계 및 알고리즘 검증 vol.21, pp.1, 2013, https://doi.org/10.12985/ksaa.2013.21.1.008