Jesus Fernandez-Hernandez

Universidad de Salamanca · Department of Cartographic and Land Engineering

This research presents a virtual tour performed on the oppidum of Ulaca, one of the most relevant archaeological sites of the Iberian Peninsula during the Late Iron Age (ca. 400–50 BC). Beyond the clear benefits of the tool to the interpretation, dissemination, and knowledge of the mentioned archaeological site and its surroundings, the novelty of...

This research focuses on the study of the ruins of a large building known as “El Torreón” (the Tower), belonging to the Ulaca oppidum (Solosancho, Province of Ávila, Spain). Different remote sensing and geophysical approaches have been used to fulfil this objective, providing a better understanding of the building’s functionality in this town, whic...

Ground source heat pump (GSHP) systems are becoming popular in space heating and cooling applications. Despite this fact, in most countries, the role of this energy is not as important as it should be nowadays according to its capabilities for energy generation without CO2 emissions, mainly due to the lack of technical knowledge about GSHP performa...

A low-cost unmanned aerial platform (UAV) equipped with RGB (Red, Green, Blue) and thermographic sensors is used for the acquisition of all the data needed for the automatic detection and evaluation of thermal pathologies on photovoltaic (PV) surfaces and geometric defects in the mounting on photovoltaic power stations. RGB imagery is used for the...

The results of visual inspection of welds in structures and machines depend on both the vision of the inspector and his/her measurement skills. The use of three-dimensional reconstruction technologies, as Structured Light System (SLS), allows the accurate assessment of the weld bead according to the quality criteria. With the proposed procedure in...

The performance quality control of pushbroom sensors in photogrammetric flights is an important step in the photogrammetric workflow, especially since major advances in direct orientation and the stabilization of sensors have taken place. Although there are technical specifications and standardized protocols for photogrammetric flights executed wit...

Photogrammetry from unmanned aerial vehicles (UAV) is a common technique for 3D modelling in a low-cost way. This technique is becoming essential to analyse the cultural heritage, e.g. historical buildings, monuments and archaeological remains in order not only to preserve them, but for disseminate accurate graphic information. The study case of Ch...

The recording and 3D modelling of complex archaeological sites is usually associated with high capital and logistical costs, because the data acquisition must be performed by specialists using expensive surveying sensors (i.e., terrestrial laser scanners, robotic total stations and/or ground-penetrating radar). This paper presents a novel, low-cost...

The unmanned aerial vehicles (UAVs) are automated systems whose main characteristic is that can be remotely piloted. This property is especially interesting in those civil engineering works in which the accuracy of the model is not reachable by common aerial or satellite systems, there is a difficult accessibility to the infrastructure due to locat...

The robotized aerial systems (RAS) are automated systems whose main characteristic is that can be remotely piloted. This property is especially interesting in those reverse engineering works in which the accuracy of the model is not reachable by common aerial or satellite systems, there is a difficult accessibility to the infrastructure due to loca...

Dentro del campo de la Tecnología Eléctrica, la determinación del valor medio y eficaz de las formas de onda generadas en las distintas máquinas eléctricas, onduladores y demás dispositivos, es fundamental para el cálculo de potencias y rendimientos de los mismos. Desde el punto de vista didáctico, el cálculo de estos valores por los métodos matemá...

En este documento se recogen los motivos y las razones por las cuales las Redes Privadas Virtuales están implantándose cada día con más fuerza en el ámbito de la comunicación de datos y la seguridad informática. También se razona y motiva la elección de un tipo concreto de Red Privada Virtual (OpenVPN), para su implementación y prueba. Se analiza a...