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The work has been partly supported by Spanish Agencia Estatal de Investigacion (10.13039/501100011033) grant RTI2018-093874-B-I00 (DEEP-MAPS). This work represents a contribution to CSIC Thematic Interdisciplinary Platform PTI TELEDETECT.
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Prieto, JfAutor o CoautorEstimation of the Block Adjustment Error in UAV Photogrammetric Flights in Flat Areas
Publicado en:Remote Sensing. 14 (12): - 2022-01-01 14(12), DOI: 10.3390/rs14122877
Autores: Arevalo-Verjel, Alba Nely; Lerma, Jose Luis; Prieto, Juan F.; Carbonell-Rivera, Juan Pedro; Fernandez, Jose;
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Resumen
UAV-DAP (unmanned aerial vehicle-digital aerial photogrammetry) has become one of the most widely used geomatics techniques in the last decade due to its low cost and capacity to generate high-density point clouds, thus demonstrating its great potential for delivering high-precision products with a spatial resolution of centimetres. The questions is, how should it be applied to obtain the best results? This research explores different flat scenarios to analyse the accuracy of this type of survey based on photogrammetric SfM (structure from motion) technology, flight planning with ground control points (GCPs), and the combination of forward and cross strips, up to the point of processing. The RMSE (root mean square error) is analysed for each scenario to verify the quality of the results. An equation is adjusted to estimate the a priori accuracy of the photogrammetric survey with digital sensors, identifying the best option for mu(xyz) (weight coefficients depending on the layout of both the GCP and the image network) for the four scenarios studied. The UAV flights were made in Lorca (Murcia, Spain). The study area has an extension of 80 ha, which was divided into four blocks. The GCPs and checkpoints (ChPs) were measured using dual-frequency GNSS (global navigation satellite system), with a tripod and centring system on the mark at the indicated point. The photographs were post-processed using the Agisoft Metashape Professional software (64 bits). The flights were made with two multirotor UAVs, a Phantom 3 Professional and an Inspire 2, with a Zenmuse X5S camera. We verify the influence by including additional forward and/or cross strips combined with four GCPs in the corners, plus one additional GCP in the centre, in order to obtain better photogrammetric adjustments based on the preliminary flight planning.
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Impacto bibliométrico. Análisis de la aportación y canal de difusión
El trabajo ha sido publicado en la revista Remote Sensing debido a la progresión y el buen impacto que ha alcanzado en los últimos años, según la agencia WoS (JCR), se ha convertido en una referencia en su campo. En el año de publicación del trabajo, 2022, se encontraba en la posición 31/202, consiguiendo con ello situarse como revista Q1 (Primer Cuartil), en la categoría Geosciences, Multidisciplinary.
Desde una perspectiva relativa, y atendiendo al indicador del impacto normalizado calculado a partir del Field Citation Ratio (FCR) de la fuente Dimensions, arroja un valor de: 1.79, lo que indica que, de manera comparada con trabajos en la misma disciplina y en el mismo año de publicación, lo ubica como trabajo citado por encima de la media. (fuente consultada: Dimensions Jun 2025)
De manera concreta y atendiendo a las diferentes agencias de indexación, el trabajo ha acumulado, hasta la fecha 2025-06-08, el siguiente número de citas:
- WoS: 1
- Scopus: 6
- OpenCitations: 4
Impacto y visibilidad social
Análisis de liderazgo de los autores institucionales
Este trabajo se ha realizado con colaboración internacional, concretamente con investigadores de: Colombia.