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<p>The precise point positioning (PPP) method has become more popular due to powerful online global navigation satellite system (GNSS) data processing services, such as the Canadian Spatial Reference System-PPP (CSRS-PPP). At the end of 2020, the CSRS-PPP service launched the ambiguity resolution (AR) feature for global positioning system (GPS) satellites. More reliable results are obtained with AR compared to the results with traditional ambiguity-float PPP. In this study, the performance of the modernized CSRS-PPP was comparatively assessed in terms of static positioning and zenith total delay (ZTD) estimation. Data for 1 month in the year 2019 obtained from 47 international GNSS service (IGS) stations were processed before and after modernization of the CSRS-PPP. The processes were conducted for GPS and GPS + GLONASS (GLObalnaya NAvigatsionnaya Sputnikovaya Sistema) satellite combinations. Besides, the results were analyzed in terms of accuracy and convergence time. According to the solutions, the AR feature of the CSRS-PPP improved the accuracy by about 50% in the east component for GPS + GLONASS configuration. The root-mean-square error (RMSE) of the ZTD difference between modernized CSRS-PPP service and IGS final troposphere product is 5.8 mm for the GPS-only case.</p>
</abstract>

The precise point positioning (PPP) method has become more popular due to powerful online global navigation satellite system (GNSS) data processing services, such as the Canadian Spatial Reference System-PPP (CSRS-PPP). At the end of 2020, the CSRS-PPP service launched the ambiguity resolution (AR) feature for global positioning system (GPS) satellites. More reliable results are obtained with AR compared to the results with traditional ambiguity-float PPP. In this study, the performance of the modernized CSRS-PPP was comparatively assessed in terms of static positioning and zenith total delay (ZTD) estimation. Data for 1 month in the year 2019 obtained from 47 international GNSS service (IGS) stations were processed before and after modernization of the CSRS-PPP. The processes were conducted for GPS and GPS + GLONASS (GLObalnaya NAvigatsionnaya Sputnikovaya Sistema) satellite combinations. Besides, the results were analyzed in terms of accuracy and convergence time. According to the solutions, the AR feature of the CSRS-PPP improved the accuracy by about 50% in the east component for GPS + GLONASS configuration. The root-mean-square error (RMSE) of the ZTD difference between modernized CSRS-PPP service and IGS final troposphere product is 5.8 mm for the GPS-only case.

Performance Assessment of PPP-AR Positioning and Zenith Total Delay Estimation with Modernized CSRS-PPP

Artificial Satellites

This work is licensed under the Creative Commons Attribution 4.0 International License.

The precise point positioning (PPP) method has become more popular due to powerful online global navigation satellite system (GNSS) data processing services,...

Performance Assessment of PPP-AR Positioning and Zenith Total Delay Estimation with Modernized CSRS-PPP

Published Online: Aug 13, 2021

Page range: 18 - 34

Received: Apr 27, 2021

Accepted: Jun 30, 2021

DOI: https://doi.org/10.2478/arsa-2021-0003

Keywords
ambiguity resolution, CSRS-PPP, precise point positioning, zenith total delay

© 2021 Omer Faruk Atiz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Performance Assessment of PPP-AR Positioning and Zenith Total Delay Estimation with Modernized CSRS-PPP

Published Online: Aug 13, 2021

Page range: 18 - 34

Received: Apr 27, 2021

Accepted: Jun 30, 2021

DOI: https://doi.org/10.2478/arsa-2021-0003

Keywordsambiguity resolution, CSRS-PPP, precise point positioning, zenith total delay

© 2021 Omer Faruk Atiz et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
ambiguity resolution, CSRS-PPP, precise point positioning, zenith total delay