Application of Inter-system Hardware Delay Bias in GPS/GLONASS PPP

  • Xiao Pei
  • Junping Chen
  • Jiexian Wang
  • Yize Zhang
  • Haojun Li
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 160)


GPS applies Code Division Multiple Access technique in signal coding, while GLONASS’s signal is produced with Frequency Division Multiple Access technique. The differences in signal frequency results in inter-system hardware delay bias for GPS/GLONASS receivers. Subjecting to these hardware delays, strategies and models of GPS/GLONASS PPP based positioning needs to be modified. We derived a GPS/GLONASS combined PPP positioning models by introducing inter-system hardware delay biases. Several scenarios were simulated to test the introduced models using the observation of IGS stations. The results show that: ① Adding a couple of GLONASS satellites can improve the positioning accuracy in the environment without enough GPS satellites being tracked; ② The inter-system hardware delay bias is stable on daily base, and it could be predicted and be fixed in the GPS/GLONASS combined PPP.


Precise Point Position Receiver Clock Precise Point Position Carrier Phase Observation GLONASS Satellite 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This research is supported by 100 Talents Programme of the Chinese Academy of Sciences. IGS community is acknowledged for providing Rinex data.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of Surveying and Geo-InformaticsTongji UniversityShanghaiPeople’s Republic of China
  2. 2.Shanghai Astronomical Observatory (SHAO)Chinese Academy of Sciences (CAS)ShanghaiPeople’s Republic of China
  3. 3.Key Lab of Advanced Surveying Engineering of SBSMShanghaiPeople’s Republic of China

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