Vidal M. auteur aut IRD Jarrin P. auteur aut IRD Rolland L. auteur aut IRD Nocquet Jean-Mathieu auteur aut IRD Vergnolle M. auteur aut IRD Sakic P. auteur aut IRD text journalArticle eng text/pdf reformatted digital access GNSS is a standard tool for monitoring and studying the Earth's dynamic environment. However, the development of dense GNSS measurements remains limited in many experiments by the cost of high-class geodetic equipment to achieve the high precision required by many applications. Recently, multi-constellation, multi-frequency, low-power and, above all, less expensive GNSS electronic chips have become available. We present a prototype of a low-cost, open-source multi-GNSS station. Our prototype comprises a dual-frequency GNSS chip, a calibrated antenna, a Raspberry Pi card and a 4G key for data transmission. The system is easy to deploy in the field and allows precise positioning in real-time and post-processing. We assess the performance of our prototype in terms of raw data quality, and quality of the obtained high rate and daily position one-year-long time series. Our results demonstrate a quality equivalent to high-class geodetic equipment and better quality than other low-cost systems proposed so far. specialized low-cost GNSS crustal deformation geodynamics 126 064 16 6 991 [18 ] 2024 https://www.documentation.ird.fr/hor/fdi:010089754 10.3390/rs16060991 [F B010089754] https://www.documentation.ird.fr/hor/fdi:010089754 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2024-05/010089754.pdf IRD - Base Horizon / Pleins textes 2024-05-22 2025-11-06 fdi:010089754 fre