An Improved Measurement and Visualization System for High Precision Positioning with GPS-RTK

Makár, Péter Ákos and Kocsis, Gergely (2026) An Improved Measurement and Visualization System for High Precision Positioning with GPS-RTK. In: Proceedings of the 13th International Conference on Applied Informatics. Líceum Kiadó, Eger, pp. 192-201. ISBN 9789634963271

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Abstract

In this work we present a GPS measurement and visualization system that enables real-time tracking, saving, and analysis of measurement data. We performed measurements using a u-blox GNSS receiver (Global Navigation Satellite System) module connected to a Raspberry Pi 5 microcomputer, to determine whether the out-of-the-box solution can be used for high precision GPS positioning that usually means centimeter level in RTK (Real-Time Kinematic) applications. Besides using the built-in RTK correction of the module we have also applied our own algorithm to further increase accuracy based on repeated measurements. Our test measurements showed that by the use of our algorithm in an optimal setup positioning precision can be increased up to 2-3 cm. We provided a modular user interface for the device supporting graphical visualization, database management and point separation. Based on repeated measurements, the system reproduces the coordinates of measurement locations. Overall, the software assists in handling GPS data and analyzing information collected during experiments. The primary goal is to maximize measurement accuracy and simplify the experimental workflow.

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