The Prediction of Geocentric Corrections during Communication Link Outages in PPP
Abstract
:1. Introduction
- If a communication link outage occurs between the IODE value change;
- If a communication link outage occurs during the ephemeris change.
2. Satellite Orbit Corrections
3. Methods
- If the communication link outage occurs between the IODE value change;
- If the communication link outage occurs during the IODE value change.
4. Results of Geocentric Correction Prediction
4.1. Geocentric Correction Extrapolation (GPS G13): The Communication Link Outage Occurs during the Ephemeris Change
4.2. Geocentric Correction Extrapolation (GPS G28): The Communication Link Outage Occurs between the IODE Value Changes
4.3. Influence of Prediction Errors on PPP Results
- The coordinates of four satellites and one receiver were selected for a certain epoch;
- The satellite·receiver distances were calculated on the basis of their coordinates;
- A small amount of noise (max 1.5 cm) was added to all observations;
- The satellite coordinates were burdened with noise (a random walk) for 200 epochs;
- The receiver coordinates were calculated for each epoch using the minimum sum of the square satellite·receiver distance residuals as an objective function;
- The distance Di from the true coordinates to the coordinates obtained from the minimization of the objective function was calculated;
- A plot of the dxi, dyi, dzi increments of the satellite positions and Di was then created.
5. Discussion and Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Linear 65 Maximum Data-Stream | Polynomial 65 Maximum Data-Stream | Linear 15 Minimum Data-Stream | Polynomial 15 Minimum Data-Stream | Constant Value | |
---|---|---|---|---|---|
RMSδX [m] | 0.006 | 0.016 | 0.017 | 0.02 | 0.008 |
RMSδY [m] | 0.184 | 0.143 | 0.127 | 0.118 | 0.114 |
RMSδZ [m] | 0.079 | 0.108 | 0.093 | 0.092 | 0.102 |
Linear 50 Maximum Data-Stream | Polynomial 50 Maximum Data-Stream | Linear 15 Minimum Data-Stream | Polynomial 15 Minimum Data-Stream | Constant Value | |
---|---|---|---|---|---|
RMSδX [m] | 0.007 | 0.002 | 0.002 | 0.002 | 0.013 |
RMSδY [m] | 0.031 | 0.022 | 0.012 | 0.004 | 0.019 |
RMSδZ [m] | 0.019 | 0.011 | 0.001 | 0.001 | 0.019 |
Linear Maximum Data-Stream | Polynomial Maximum Data-Stream | Linear 15 Minimum Data-Stream | Polynomial 15 Minimum Data-Stream | Constant Value | |
---|---|---|---|---|---|
RMSδX [m] | 0.166 | 0.418 | 0.348 | 0.338 | 0.342 |
RMSδY [m] | 0.074 | 0.126 | 0.102 | 0.091 | 0.1 |
RMSδZ [m] | 0.243 | 0.118 | 0.141 | 0.149 | 0.142 |
Linear Maximum Data-Stream | Polynomial Maximum Data-Stream | Linear 15 Minimum Data-Stream | Polynomial 15 Minimum Data-Stream | Constant Value | |
---|---|---|---|---|---|
RMSδX [m] | 0.211 | 0.035 | 0.019 | 0.004 | 0 |
RMSδY [m] | 0.138 | 0.005 | 0.018 | 0.003 | 0 |
RMSδZ [m] | 0.078 | 0.019 | 0.016 | 0.004 | 0.001 |
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Janicka, J.; Tomaszewski, D.; Rapinski, J.; Jagoda, M.; Rutkowska, M. The Prediction of Geocentric Corrections during Communication Link Outages in PPP. Sensors 2020, 20, 602. https://doi.org/10.3390/s20030602
Janicka J, Tomaszewski D, Rapinski J, Jagoda M, Rutkowska M. The Prediction of Geocentric Corrections during Communication Link Outages in PPP. Sensors. 2020; 20(3):602. https://doi.org/10.3390/s20030602
Chicago/Turabian StyleJanicka, Joanna, Dariusz Tomaszewski, Jacek Rapinski, Marcin Jagoda, and Miloslawa Rutkowska. 2020. "The Prediction of Geocentric Corrections during Communication Link Outages in PPP" Sensors 20, no. 3: 602. https://doi.org/10.3390/s20030602
APA StyleJanicka, J., Tomaszewski, D., Rapinski, J., Jagoda, M., & Rutkowska, M. (2020). The Prediction of Geocentric Corrections during Communication Link Outages in PPP. Sensors, 20(3), 602. https://doi.org/10.3390/s20030602