Proyecto de Investigación: MODELADO NUMERICO Y EXPERIMENTAL DE LA INMUNIDAD ELECTROMAGNETICA EN VEHICULOS AEREOS NO TRIPULADOS FRENTE A HIRF Y EFECTOS INDIRECTOS DE DESCARGAS ATMOSFERICAS
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ID
TEC2013-48414-C3-2-R
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Publicaciones
Comparison of Metal-Backed Free-Space and Open-Ended Coaxial Probe Techniques for the Dielectric Characterization of Aeronautical Composites
(Multidisciplinary Digital Publishing Institute (MDPI), 2016-06-24) López Rodríguez, P.; Escot Bocanegra, D.; Poyatos Martínez, D.; Weinmann, F.; Instituto Nacional de Técnica Aeroespacial (INTA); Ministerio de Economía y Competitividad (MINECO); Agencia Estatal de Investigación (AEI)
The trend in the last few decades is that current unmanned aerial vehicles are completely made of composite materials rather than metallic, such as carbon-fiber or fiberglass composites. From the electromagnetic point of view, this fact forces engineers and scientists to assess how these materials may affect their radar response or their electronics in terms of electromagnetic compatibility. In order to evaluate this, electromagnetic characterization of different composite materials has become a need. Several techniques exist to perform this characterization, all of them based on the utilization of different sensors for measuring different parameters. In this paper, an implementation of the metal-backed free-space technique, based on the employment of antenna probes, is utilized for the characterization of composite materials that belong to an actual drone. Their extracted properties are compared with those given by a commercial solution, an open-ended coaxial probe (OECP). The discrepancies found between both techniques along with a further evaluation of the methodologies, including measurements with a split-cavity resonator, conclude that the implemented free-space technique provides more reliable results for this kind of composites than the OECP technique
UAVEMI project: Numerical and experimental EM immunity assessment of UAV for HIRF and lightning indirect effects
(Institute of Electrical and Electronics Engineers, 2016-07-07) García, Salvador G.; Silva, F.; Escot Bocanegra, D.; Pascual, E.; Pantoja, M. F.; Riu, P.; Añón Cancela, M.; Álvarez, J.; Cabello, M.; Pous, M.; Fernández, S.; Trallero, R.; Poyatos Martínez, D.; Nuño, L.; Instituto Nacional de Técnica Aeroespacial (INTA)
The UAVEMI project, funded by the Spanish Ministry of Economy and Competitiveness, gathers a consortium formed by several research and development institutions and one industrial partner. The main goal is to develop innovative experimental and numerical approaches for the assessment of the electromagnetic compatibility of unmanned air vehicles, under high intensity radiated fields, lightning indirect effects and non-nuclear electromagnetic pulses. This contribution describes the capabilities currently being developed under the project.
BIANCHA: A spherical indoor facility for bistatic electromagnetic tests
(Institute of Electrical and Electronics Engineers, 2017-01-05) López Rodríguez, P.; Hernán Vega, O.; Poyatos Martínez, D.; Escot Bocanegra, D.; Ministerio de Economía y Competitividad (MINECO)
BIANCHA (BIstatic ANechoic CHAmber) is a singular facility located at the premises of the National Institute for Aerospace Technology (INTA), Spain. It was devised to enable both monostatic and bistatic automatic positioning and, therefore, permits to perform a wide variety of electromagnetic tests. In this regard, it is worth noting that in the last years, a renewed interest has arisen in bistatic radar. Some of the main reasons behind this renaissance are the recent advances in passive radar systems added to the advantages that bistatic radar can offer to detect stealth platforms. On the other hand, with the aim of developing new aeronautic materials with desired specifications, research on the electromagnetic properties of materials has also attracted much attention, demanding engineers and scientists to assess how these materials behave in the presence of electromagnetic fields. Consequently, this paper introduces BIANCHA and demonstrates its applicability for these purposes by presenting results of tests for two different applications: a bistatic scattering analysis of scaled aircraft targets and the extraction of the electromagnetic properties of composite materials utilized in an actual aeronautical platform.
Comparing Open Area Test Site and Resonant Chamber for Unmanned Aerial Vehicle's High-Intensity Radiated Field Testing
(Institute of Electrical and Electronics Engineers, 2018-01-18) Fernández Romero, S.; López Rodríguez, P.; Escot Bocanegra, D.; Poyatos Martínez, D.; Añón Cancela, M.; Ministerio de Economía y Competitividad (MINECO); Agencia Estatal de Investigación (AEI)
Open area test sites (OATS) have been traditionally employed for aircraft electromagnetic compatibility certification tests because of the large size of these items. In this regard, unmanned aerial vehicles (UAVs) have emerged in the last years and, albeit being sometimes notably smaller, yet they have to accomplish for the same certification process. This paper investigates into the possibility of using a reverberation chamber for performing two aircraft low-level coupling tests, namely, low-level direct drive and low-level swept fields, and compares the results with those obtained in an OATS, in both cases using a representative part of a UAV.
Comparison of Facilities for Low Level Coupling Tests in UAV EMC Certification
(Institute of Electrical and Electronics Engineers, 2017-11-30) Fernández Romero, S.; Escot Bocanegra, D.; Poyatos Martínez, D.; Añón Cancela, M.; López Rodríguez, P.; Ministerio de Economía y Competitividad (MINECO); Agencia Estatal de Investigación (AEI)
The rise in the utilization of Unmanned Aerial Vehicles (UAVs) in the last years has also brought concerns in terms of Electromagnetic Compatibility (EMC) regulation of these platforms. Depending on the nature and operations of the UAVs, they are being required to go through the same processes than an aircraft EMC certification of aircraft involves a wide variety of tests. This paper deals with two aircraft low level coupling tests, namely, Low Level Direct Drive (LLDD) and Low Level Swept Fields (LLSF) and compares the results obtained in two different sites. On one hand, an Open Area Test Site (OATS) will be employed and, on the other hand, a Reverberation Chamber (RC) will be the other facility examined. The object under test will be a representative part of an UAV.
