Performance assessment of IGS Combined/JPL individual rapid and ultra-rapid products: consideration of precise point positioning technique

Yıl 2020, Cilt: 5 Sayı: 1, 1 - 14, 01.02.2020

Sermet Ogutcu

https://doi.org/10.26833/ijeg.577385

Cited By: 6

Öz

Satellite orbit and clock products are the key elements for precise point positioning (PPP). Contrary to the relative technique, errors in satellite orbit and clock directly lump to the station coordinates for PPP technique. Currently final, rapid and ultra-rapid (observed-half and predicted-half) satellite products have been made freely available over the internet mainly for Global Positioning Service (GPS) satellites. Final and rapid products are used for post-processing applications. For real-time and near real-time applications, ultra-rapid products with predicted and observed parts can be used. There are several analysis centers that provide the satellite orbit and clock products. In this paper, accuracy and precision of GPS rapid and ultra-rapid satellite orbit and clock products from two services, International Global Navigation Satellite Service (IGS) and Jet Propulsion Laboratory (JPL), were investigated in the position domain of PPP technique while the final products of these services were taken as the true value. Ten IGS stations around the world were chosen for PPP processes. 24-12-8-4-2 hours of non-overlapping arc-lengths of GPS observations in 31 consecutive days (DOY 1-31 of 2018) were processed for each station. The results confirm that the shorter the arc-lengths, the larger the relative error of rapid and ultra-rapid products due to the similar Gaussian distribution pattern of the orbit errors with respect to the final products. In terms of consistency between the products, Root-Mean-Square-Errors (RMSE) of final-rapid differences of IGS and JPL are at the millimeter level. Millimeter level accuracy can be obtained using rapid and ultra-rapid products for JPL whereas only rapid products of IGS maintain millimeter accuracy with respect to the final products.

Anahtar Kelimeler

Final orbits and clocks, GPS, IGS, JPL, Rapid and Ultra-Rapid products

Kaynakça

• Alcay, S., Ogutcu, S., Kalayci, I and Yigit, C.O. (2019). Displacement monitoring performance of relative positioning and Precise Point Positioning (PPP) methods using simulation apparatus, Advances in Space Research 63, 5, 1697–1707.
• Bertiger, W., Desai, S. D., Haines, B., Harvey, N., Moore, A. W., Owen, S., and Weiss, J. P. (2010). Single receiver phase ambiguity resolution with GPS data. Journal of Geodesy, 84(5), 327-337.
• Dow, J. M., Neilan, R. E and Rizos, C. (2009). The international GNSS service in a changing landscape of global navigation satellite systems. Journal of geodesy, 83(3-4), 191-198.
• Gao, Y and Chen, K., (2004). Performance analysis of precise point positioning using rea-time orbit and clock products. Positioning, 1(08), 0.
• Geng, J., Teferle, F. N., Shi, C., Meng, X., Dodson, A. H and Liu, J. (2009). Ambiguity resolution in precise point positioning with hourly data. GPS solutions, 13(4), 263- 270.
• Hayal, A. G and Sanli, D. U (2016). Revisiting the role of observation session duration on precise point positioning accuracy using GIPSY/OASIS II Software. Boletim de Ciências Geodésicas, 22 (3), 405-419.
• Lagler, K., Schindelegger, M., Böhm, J., Krásná, H., and Nilsson, T. (2013). GPT2: Empirical slant delay model for radio space geodetic techniques. Geophysical research letters, 40(6), 1069-1073.
• Lu, F and Li, J (2011). Precise point positioning study to use different igs precise ephemeris. In Computer Science and Automation Engineering (CSAE), 2011 IEEE International Conference, 3, 592-595.
• Martín, A., Anquela, A. B., Capilla, R and Berné, J. L (2010). PPP technique analysis based on time convergence, repeatability, IGS products, different software processing, and GPS+ GLONASS constellation. Journal of Surveying Engineering, 137(3), 99-108.
• Montenbruck, O., Steigenberger, P and Hauschild, A. (2015). Broadcast versus precise ephemerides: a multiGNSS perspective. GPS solutions, 19(2), 321-333.
• Montenbruck, O., Ebinuma, T., Lightsey, E. G and Leung, S. (2002). A real-time kinematic GPS sensor for spacecraft relative navigation. Aerospace Science and Technology, 6(6), 435-449.
• Rebischung, P and Schmid, R. (2016). IGS14/igs14. atx: a new framework for the IGS products. In AGU Fall Meeting 2016.
• Park, J. K and Jung, K. Y. (2014). Accuracy Analysis of Influences by Satellite Ephemeris. Contemporary Engineering Sciences, 7(24), 1.
• Şentürk, E and Erener, A. (2017). Determination Of Temporary Shelter Areas In Natural Disasters By Gis A Case Study For Gölcük/Turkey. International Journal of Engineering and Geosciences, 2(3), 84-90.
• Shi, J., Wang, G., Han, X and Guo, J. (2017). Impacts of Satellite Orbit and Clock on Real-Time GPS Point and Relative Positioning. Sensors, 17(6), 1363.
• Springer, T. A and Hugentobler, U. (2001). IGS ultra rapid products for (near-) real-time applications. Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy, 26(6-8), 623-628.
• Tusat, E and Ozyuksel, F. (2018). Comparison of GPS satellite coordinates computed from broadcast and IGS final ephemerides. International Journal of Engineering and Geosciences, 3(1), 12-19.
• Yigit, C. O and Gurlek, E. (2017). Experimental testing of high-rate GNSS precise point positioning (PPP) method for detecting dynamic vertical displacement response of engineering structures. Geomatics, Natural Hazards and Risk, 8(2), 893-904.
• Zumberge, J. F., Heflin, M. B., Jefferson, D. C., Watkins, M. M and Webb, F. H. (1997). Precise point positioning for the efficient and robust analysis of GPS data from large networks. Journal of geophysical research: solid earth, 102(B3), 5005-5017.