Precision analysis of Trimble RTX surveying technology with xFill function in the context of obtained conversion observations

Robert Krzyżek


As a result of traditional geodetic surveying we usually achieve observations which are then used for calculating rectangular coordinates onto a plane along with precision evaluation. In this article the surveying methods are presented in which the situation is different. Test measurements were carried out, consisting in the measurement of a fragment of detailed control network in RTK (Real Time Kinematic) and RTX (Real Time Extended) mode with xFill function. First, the rectangular coordinates onto a plane (through the transformation of data ellipsoidal) were obtained, on the basis of which the conversion observations were determined and they were compared with each other, as well as with reference parameters - conversion observations out of detailed control network adjustment with use of the method of least squares. The results of the study allow to verify the precision and application possibilities of conversion observations obtained thanks to Trimble RTX technology with xFill function. Application of this surveying method in typical geodetic tasks is fully justifiable. Nevertheless, it is recommendable to be aware of the correlations of absolute or relative values obtained in RTX procedure to reference parameters, which in turn will enable conclusive verification of the possibilities of Trimble RTX technology application in certain geodetic surveys.


RTX; RTK GPS; conversion observations; Trimble xFill

Full Text:



Bosy J., Kontny B., & Borkowski A. (2009). International Association of Geodesy Symposia Volume 134, Geodetic Reference Frames, IAG Symposium Munich Germany, October 9-14, 2006, pp197-203, Copyright 2009, Springer.

Dai L., Wang J., Rizos C., & Han S. (2003). Predicting atmospheric biases for real-time ambiguity resolution in GPS/GLONASS reference station networks. Journal of Geodesy, Vol. 76, Issue 11-12, 617-628.

Geng J., Meng X., Dodson A., Ge M., & Teferle F. (2010). Rapid re-convergences to ambiguity-fixed solution in precise point positioning, Journal of Geodesy, Vol. 84, Issue 12, 705-714.

Krzyżek R. (2013). Verification of applicability of the Trimble RTX satellite technology with xFill function in establishing surveying control networks, Geodesy and Cartography, Vol. 62, no. 2, s. 217-233.

Kubo N. (2009). Advantage of velocity measurements on instantaneous RTK positioning. GPS Solution, Vol. 13, Issue 4, 271-280.

Lannes A., & Prieur J-L. (2013). Calibration of the clock-phase biases of GNSS networks: the closure-ambiguity approach. Journal of Geodesy, Vol. 87, Issue 8, 709-731.

Leonardo R., Landau H., Nitschke M., Glocker M., Seeger S., Chen X., Deking A., Ben Tahar M., Zhang F., Ferguson K., Stolz R., Talbot M., Lu G., Allison T., Brandl M., Gomez V., Cao W., Kipka A., & Trimble Terrasat GmbH, Germany. (2011). RTX Positioning: The next generation of cm-accurate Real-Time GNSS Positioning. White Paper_RTX.

MIA. (2011). Regulation of Minister of Interior and Administration - in case of technical standards of performing detailed surveys and working out and sending results of these surveys to National Geodetic and Cartographic Database (in Polish). Journal of Laws of 2011 No. 263, entry 1572. Warsaw: Government Legislation Centre.

Zhang X., Li X., & Guo F. (2011). Satellite clock estimation at 1 Hz for realtime kinematic PPP applications. GPS Solutions, Vol. 15, Issue 4, 315-324.

Zhang X., & Li P. (2013). Integrating GPS and GLONASS to accelerate convergence and initialization times of precise point positioning. GPS Solution. – the state of the 30.11.2013



  • There are currently no refbacks.

Copyright © Reports on Geodesy and Geoinformatics 2014-2018, e-mail:
eISSN: 2391-8152