Volume 33 Issue 8
Aug.  2008
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WANG Zemin, QIU Lei, SUN Wei, WANG Haijun. Accuracy Analysis of L_2 C Code of Dual Frequency GPS Receiver[J]. Geomatics and Information Science of Wuhan University, 2008, 33(8): 779-782.
Citation: WANG Zemin, QIU Lei, SUN Wei, WANG Haijun. Accuracy Analysis of L_2 C Code of Dual Frequency GPS Receiver[J]. Geomatics and Information Science of Wuhan University, 2008, 33(8): 779-782.

Accuracy Analysis of L_2 C Code of Dual Frequency GPS Receiver

Funds: 国家测绘局南极考察地区基础测绘资助项目(146990711109-1),国家教育部留学回国人员科研启动基金资助项目
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  • Received Date: June 14, 2008
  • Revised Date: June 14, 2008
  • Published Date: August 04, 2008
  • Using the actual data collection,the quality of L2 carrier phase is analyzed in two respects,which are SNR and the positioning residual error.Some conclusions are given.Firstly,the SNR of L2 carrier phase resumed by L2 C code is improved obviously,almost close to the SNR of L1 carrier,with a difference of less than 5 dBHz.Secondly,it has a more stable SNR than that obtained before GPS modernization.Meanwhile,the positioning residual error is smaller than L2 carrier phase without L2 C code,which can significantly improve positioning accuracy.

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