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| Content Provider | Springer Nature Link |
|---|---|
| Author | Dawidowicz, K. Krzan, G. |
| Copyright Year | 2014 |
| Abstract | Precise Point Positioning (PPP) is a combination of the original absolute positioning concept and differential positioning techniques. In PPP we use observation data from a single receiver and additional information of GNSS biases and errors derived from permanent networks. Since PPP was developed based only on GPS observations, the accuracy, availability and reliability of positioning is quite dependent on the number of visible satellites. One possible way to increase the availability of satellites is to integrate GPS and GLONASS observations. Nowadays such integration in PPP is available.The PPP technique has an essential advantage over differential methods. The user needs only a single receiver to obtain accurate position. Unfortunately, current commercial software does not provide processing of measurements taken using the PPP technique. This requires using scientific software or one of several on-line PPP services.This paper presents an analysis of the position determination accuracy in PPP mode. We processed 6 consecutive days of GPS+GLONASS data using the on-line PPP-CSRS service to determine how the accuracy of derived three-dimensional positional coordinates depends on the length of the observing session, the characteristics of horizon visibility on points and the observations used in post-processing (GPS or GPS+GLONAS, L1 or L1+L2).The PPP-CSRS results show that horizontal accuracies of about 5 cm and vertical accuracies of 10 cm are achievable provided 0.5 hours of open sky, low multipath dual frequency GPS-only data. The accuracies clearly decrease for points measured under conditions of limited availability of satellites. Unexpectedly, adding GLONASS observations generally does not improve the results in this case. |
| Starting Page | 37 |
| Ending Page | 55 |
| Page Count | 19 |
| File Format | |
| ISSN | 22135812 |
| Journal | Acta Geodaetica et Geophysica Hungarica |
| Volume Number | 49 |
| Issue Number | 1 |
| e-ISSN | 22135820 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2014-01-09 |
| Publisher Institution | Quarterly of the Hungarian Academy of Sciences |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | PPP Static measurements accuracy GLONASS Geophysics/Geodesy GPS CSRS |
| Content Type | Text |
| Resource Type | Article |
| Subject | Building and Construction Geology Geophysics |
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