Volume 35 Issue 3
May  2015
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Zhao Wenjiao, Wang Hu, Dang Yamin, Bai Guixia. Characteristics of Multi-GNSS Global Gonospheric Godeling and Gnalysis of the Accuracy[J]. Journal of Space Science, 2015, 35(3): 306-314. doi: 10.11728/cjss2015.03.306
Citation: Zhao Wenjiao, Wang Hu, Dang Yamin, Bai Guixia. Characteristics of Multi-GNSS Global Gonospheric Godeling and Gnalysis of the Accuracy[J]. Journal of Space Science, 2015, 35(3): 306-314. doi: 10.11728/cjss2015.03.306

Characteristics of Multi-GNSS Global Gonospheric Godeling and Gnalysis of the Accuracy

doi: 10.11728/cjss2015.03.306
  • Received Date: 2014-06-09
  • Rev Recd Date: 2014-06-19
  • Publish Date: 2015-05-15
  • The model of ionospheric delay correction is established by only GPS and by fusing BDS, GPS and GLONASS with observations of pseudo distance smoothed by carrier phase and spherical harmonics. And some experiments of the global ionospheric inversion have been done. The variations process of ionospheric is fused daily in January, 2014 to obtain monthly comprehensive differential code bias product and did some analysis on the accuracy of the products. The fusion of the three systems not only increases the number of satellites observation but also improves the geometric distribution of the puncture point. The analysis result shows that the accuracy of inversion of global ionospheric of three system fusions is better than GPS system alone, about 5 to 10 increase in TECU. The Precision of monthly comprehensive differential code bias product of GPS is better than GLONASS, while the BDS stability is poor.

     

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