Implementación y evaluación de un sistema cinemático en tiempo real, utilizando un radio definido por software de bajo costo, configurado como una estación móvil de geolocalización para recepción de señales del sistema global de navegación por satélite

Abstract

Geolocation systems have improved in accuracy thanks to technological advancements, redu- cing costs and expanding applications. RTK devices are highly accurate and useful in topo- graphic surveys, reliable in receiving GNSS signals. To lower costs, RTL-SDR devices were tested as GNSS receivers in a low-cost system configured as a rover connected to a base station using the RTCM protocol for differential corrections. Measurements were taken at eight reference points in Cuenca, comparing the accuracy of the processed signals under three con- ditions: without correction, with correction using an external base station, and with correction using a local base station. The results showed that the local base station improved accuracy, although in high-interference environments, the corrections were not always precise. Measure- ments without correction showed greater dispersion but a more accurate average. A low-cost SDR-based GNSS system is viable for moderate precision applications, with the local base station recommended for greater accuracy or no correction in high-interference environments.