Integración de NTRIP y drones RTK para la generación de ortoimágenes de alta precisión
DOI:
https://doi.org/10.56124/sapientiae.v9i20.017Keywords:
RTK drones; Ground Control Points; Aerial photogrammetry; Surveying accuracy.Abstract
Drones with real-time positioning have transformed topographic surveys, where the optimization of time and resources is crucial in civil engineering and land management projects. Traditionally, the precise georeferencing of orthomosaics relied on Ground Control Points (GCPs), which ensure high accuracy but require complex logistics and significant field effort. As an alternative, differential corrections via NTRIP allow for a reduction in the number of GCPs, minimizing time, although the debate regarding their equivalence in accuracy remains. This study was conducted on a 2-hectare site in Guayaquil, comparing two orthomosaics: one adjusted with 8 GCPs and another generated exclusively with NTRIP. Both flights at 90 m produced orthomosaics with a GSD of 2.4 cm/pixel, validated through independent GNSS checkpoints. The results show centimeter-level accuracy in planimetry but greater vertical bias with NTRIP. It is concluded that both methodologies are comparable, although GCPs remain indispensable in critical applications.
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