Cost-efficient multi-GNSS station with real-time transmission for geodynamics applications Vidal, M. Jarrin, P. Rolland, L. /Nocquet, Jean-Mathieu Vergnolle, M. Sakic, P. low-cost GNSS crustal deformation geodynamics 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. 2024 text https://www.documentation.ird.fr/hor/fdi:010089754 fdi:010089754 Vidal M., Jarrin P., Rolland L., Nocquet Jean-Mathieu, Vergnolle M., Sakic P.. Cost-efficient multi-GNSS station with real-time transmission for geodynamics applications. 2024, 16 (6), 991 [18 ] EN