(Espacio) Comunicaciones de Congresos

URI permanente para esta colecciónhttps://inta.metricsalad.com/handle/123456789/57

Buscar

Suscribirse para recibir un correo electrónico cada vez que se introduzca un ítem en esta colección.

Mostrando 1 - 20 de 60

Restringido
RF & MW Characterization of Advanced Materials with High Accuracy for Space Applications
(European Space Agency (ESA), 2023-05-12) Ramos Somolinos, D.; Plaza Gallardo, B.; Cidrás Estévez, J.; Poyatos Martínez, D.; Hernández Gómez, Daniel; Instituto Nacional de Técnica Aeroespacial (INTA); Ministerio de Ciencia e Innovación (MICINN)
Electromagnetic characterization is a fundamental piece when designing systems that will be present in space missions. These systems must function correctly immersed into the electromagnetic environment they are going to find, preventing electromagnetic interference (EMI) from affecting their characteristics and properties [1]. In addition to the study of the system itself, it is equally important to know the behaviour of the materials with which these systems will be built in the presence of electromagnetic radiation, so that their viability can be established [2] [3]. On the other hand, taking into account the communications in space, the characterization of antennas is essential during their design phase. All these points are taken into account in the development of the project Large European Antenna (LEA) [4] [5], which is focused on how to build powerful antennas for specific Earth observation, telecommunications, etc., that can automatically self-deploy in space. This type of antennas is commonly formed by complex knitted meshes of gold-plated metals [6] [7] [8]. For these structures there are two important issues regarding radiofrequency (RF) characterization which are its reflectance and transmittance properties. In this case, it is important to ensure that the RF behaviour of the mesh surface is well enough to guarantee that the final reflector accomplishes the RF specifications of the antenna. The following communication will present two test benches (POLYBENCH and mmW-BENCH) that allow to electromagnetically characterize materials with high accuracy from 2.6 GHz to 110 GHz; both test benches fully designed and developed by the National Institute of Aerospace Technology (INTA) and both are based in the free space method, which allows measurements in a wide range of frequencies with great precision and with relative simplicity and speed [9]. The tests carried out focus on the measurement of the reflection and transmission coefficients of different test samples, in two orthogonal polarizations and on different points of each sample, with an accuracy below ± 0.1dB in amplitude. This paper is structured as follows: first an explanation of the test benches used to carry out the measurements is provided; then, the procedure of the measurements is explained; after that, an analysis of the measurement errors is given and finally some conclusions are presented.
Acceso Abierto
Caracterización electromagnética de urnas de protección planetaria en cámara anecoica biestática para ensayos de EMC
(Universidad de Valencia, 2023-11-23) Jimenez Lorenzo, María; Plaza Gallardo, B.; Ramos Somolinos, D.; Poyatos Martínez, D.; Moragrega Langton, María; Instituto Nacional de Técnica Aeroespacial (INTA); Ministerio de Ciencia e Innovación (MICINN)
Acceso Abierto
Efecto de la saturación de los materiales magnéticos en el filtrado de interferencias
(Universidad de Valencia, 2023-11-21) Morales Blanco, C.; Moragrega Langton, María; López Sanz, Daniel; Instituto Nacional de Técnica Aeroespacial (INTA); Ministerio de Ciencia e Innovación (MICINN)
En electrónica, el uso de bobinados con núcleos de ferrita está cada vez más extendido, para filtrar y proteger equipos electrónicos frente a interferencias electromagnéticas (EMI). Por ello, es de gran importancia el conocimiento de las prestaciones de dichos núcleos. Su uso frente a niveles elevados de tensión puede hacer que su comportamiento se aleje del régimen lineal a uno no lineal, conociéndose también como estado de saturación en materiales magnéticos. En estas condiciones, se modifican las características que se esperan de los bobinados destinados a la filtración de interferencias, eso es, impedir el paso de señales interferentes al interior de los equipos electrónicos, ofreciendo alta impedancia en las líneas de alimentación y señal. En esta ponencia, se presentarán los resultados obtenidos en el estudio de este fenómeno. Se demostrará inyectando pulsos de alta energía de diferente amplitud a una bobina, hasta observar comportamientos no lineales que se podrían identificar con la saturación de los materiales magnéticos. Este estudio abre la puerta a futuras líneas de investigación sobre el comportamiento de materiales magnéticos frente a la inyección de altas energías.
Restringido
Electrical performance results of multi-junction space solar cells under high temperature high intensity environmental conditions
(IEEE Aerospace and Electronic Systems Society 13th European Space Power Conference 2023, 2023-10-02) Martínez de Olcoz, A.; Jüngst, G.; Barber, Christopher; Gras, Ana; Baur, Carsten
Missions close to the sun such as BepiColombo or Venus Express always require dedicated testing of solar cells since they operate under non-standard conditions, i.e., High Temperature High Intensity (HTHI). The next mission that falls into the category of HTHI ESA mission is EnVision to Venus, which – in case it will be adopted – is planned to launch in the early 2030s. The space solar cells destined for the PV solar generator are expected to operate at sun intensities of 2 suns and most probably in the temperature range of 130°C-140°C. At INTA-SPASOLAB the temperature coefficient of two cell candidates for the PV solar generator of the ESA EnVision mission, which are a quadruple junction and a triple junction solar cell, have already been determined at 1 sc-AM0 within the range from +25ºC to +100ºC.
Restringido
Assessment of Spectrally Matched Cells
(AESS, 2023-10-02) Gras, Ana; Barber, Christopher; Baur, Carsten; Instituto Nacional de Técnica Aeroespacial (INTA)
The spectral matching criterion for solar cells is crucial for photovoltaic (PV) measurements under simulated sunlight because it helps reducing the uncertainty due to the spectral mismatch correction. It is common practice in both terrestrial and space PV communities to identify spectrally matched cells as those having spectral responsivities identical or at least very similar to each other. A quantitative definition and evaluation of spectrally matched cells is made in this document.
Acceso Abierto
Caracterización electromagnética de materiales aeroespaciales a baja temperatura
(Universidad de Valencia, 2023-11-23) Plaza Gallardo, B.; Zamorano Martínez, Pablo; Ramos Somolinos, D.; Poyatos Martínez, D.; Instituto Nacional de Técnica Aeroespacial (INTA); Ministerio de Ciencia e Innovación (MICINN)
Acceso Abierto
Development of optimization algorithms for electromagnetic characterization in free space
(Institute of Electrical and Electronics Engineers, 2023-03-31) Cidrás Estévez, J.; Ramos Somolinos, D.; Plaza Gallardo, B.; Poyatos Martínez, D.; Instituto Nacional de Técnica Aeroespacial (INTA); Ministerio de Ciencia e Innovación (MICINN)
In recent years, in the aerospace industry, there has been a trend based on replacing the classic metallic materials with new advanced materials such as carbon fiber composites (CFC), fiberglass, etc. Due to this, the electromagnetic (EM) characterization of these new materials is essential to maintain safety and EM compatibility. This article will focus on the free space measurement technique, from which a series of optimization algorithms have been developed, allowing the extraction of permittivity and permeability of materials in a frequency range up to 40 GHz using the Time-Domain Gating from a Vector Network Analyzer (VNA).
Acceso Abierto
Magnetic Cleanliness activities in advanced nanosatellites systems for earth observation research - Anser Mission
(Institute of Electrical and Electronics Engineers, 2022-05-25) Fernández Romero, S.; Rivero, Miguel Ángel; Díaz Michelena, M.; Román De Aragón, Álvaro; Rodríguez, Santiago; Instituto Nacional de Técnica Aeroespacial (INTA)
The purpose of this paper is to describe the specific magnetic measurements that must be made on the flight model ANSER (Advanced Nanosatellites Systems for Earth observation Research) satellite to ensure the necessary magnetic cleanliness, to characterize the magnetic torques, and to verify the magnetometer measurements. The objective is to develop the necessary technology to implement future space missions based on Satellite Constellations. This article describes both the innovative measurement procedures used and the measurement uncertainty calculations. The results obtained from both Cube Sats and the most important magnetic elements are presented, including the determination of the remaining and induced magnetic moment of spacecraft, and the calibration or characterization of magnetometers and magnetic torquers.
Acceso Abierto
A Novel Design of Deep Space 25KW Water-cooled Feeder at X-band and High Power Test Campaign Aspects
(Universidad Politécnica de Valencia, 2017-04-06) Dragas, Sasa; Mediavilla, Ángel; Tazón, Antonio; Baquero, Pedro; Valle, José; Mandado, Emilio; Vicente, Carlos; Cano, Eduardo; Sanz Contreras, Miguel Ángel; García Patrón Mendiburu, Martín; Ministerio de Ciencia e Innovación (MICINN)
Future deep-space missions will generate increasing quantities of data from hundreds of millions of kilometres, requiring much higher RF power level as well as higher frequency bands to increase data transmission capacity. The European Space Agency (ESA) operates a network S/X/Ka-band antennas for Telemetry, Tracking and Command (TT&C) operations of different categories of spacecraft. Present ESA Deep Space Stations are (DSS) equipped with a 20 KW X Band High Power Amplifier (HPA). Future missions will demand larger uplink power levels, for distant spacecraft or for critical phases like entry descending and landing or for emergency situations of missions. This paper presents a part of the work done in the frame of an ESA TRP activity "X-band Cryogenic Feed Prototyping". The emphasis is given on development of the transmitting part that has to deal with minimum 25KW of RF power as well as on the preparation of the testing campaign. In order to prove target properties of the feeder, as a main task appears definition of the corona discharge and power handling test. A novel feeder concept is applied and developed with objective to provide a compact solution that offers superior properties as well as a simple interface with cryogenic receiver. The RF design of the feeder components is refined using SPARK3D software to assure absence of the corona discharge under operational conditions. The transmitting part of the feeder shall be equipped with fully integrated and efficient water-cooling system maintaining the complete system on the optimal temperature. The envisaged tests shall be performed in pressurized chamber with 1KW RF power.
Acceso Abierto
Medidas singulares de antenas en equipos y sistemas aeroespaciales
(UNION CIENTIFICA INTERNACIONAL DE RADIO, 2021-09-20) Rodríguez Amor, J. R.; Luque Cañete, J. A.; Plaza Gallardo, B.; Muñoz Rebate, I.; Poyatos Martínez, D.
The requirements in the antenna measurement demanded by the industry, especially in sectors such as aerospace and defense and security, have increased. This forces the laboratories that carry out these tests to evolve appropriately. In this way, INTA’s Laboratory for Antennas and Radar Signature Measurement has implemented new test and measurement capabilities in its catalog. The laboratory has three different facilities, each one dedicated to a specific type of test. The semi-open chamber has the ability to measure and calibrate the antenna factor in collaboration with the INTA Center for Metrology and Calibration, while the open field has the ability to measure antennas by ground reflection for VHF and UHF frequency bands. The INTA Compact Antenna Test Range (CATR) is a complete turn-key test system for antenna and Radar Cross Section (RCS) measurements. In this article, a review of the laboratory’s capabilities in relation to antenna measurement will be shown. In addition, some of the newest features will be explained, such as the ability to measure antennas up to 8 meters using spherical near field measurement technique and the development of a ground plane for measuring the RCS of antennas on low observability platforms.
Restringido
PIM characterization of a deployable reflective surface. Large european antenna application
(Universidad Politécnica de Valencia, 2022-10-20) García Patrón Mendiburu, Martín
Within the framework of H2020 program, an international Consortium led by German companies HPS and LSS was awarded an EC-grant to develop the first Large European Antenna (LEA). INTA was part of the Consortium with its 15 entities in total and has been in charge of testing activities. Amongst them, INTA carried out the PIM characterization of the mesh structure the LEA is made of. Deployable antennas’ RF-reflective surfaces are commonly formed by complex knitted meshes of gold plated metals. One important issue regarding the RF characterization of this structure is its passive intermodulation (PIM) performance. PIM is a result of nonlinear current versus voltage response. It mostly takes place in weak electrical contact points. Therefore, complex knitted meshes suggest a number of potential PIM mechanisms where environmental variables play an important role: temperature, vibration, relative movement and tension of mesh wires, uncertainty of electrical contact, surface oxidation, etc. As a result of passive intermodulation, part of the energy initially transported by carriers is translated to other frequencies, hence interferences might appear on the transmission-reception system itself, and even on other antennas on board the satellite. A wide testing campaign has been carried out to characterize the LEA mesh. That campaign included the application, on a set of different mesh samples, of extreme thermal cycles, radiated high power levels, under different polarization and incidence angles, vibration, etc., in a zero humidity atmosphere. All tests were performed at INTA’s RF Transparent Low PIM Thermal Chamber, a special facility which grants the feasibility to apply all mentioned conditions. This paper will focus on the techniques applied and on some outcomes that may be useful for the space RF testing community.
Restringido
RF measurements for future communication applications: an overview
(Institute of Electrical and Electronics Engineers, 2022-07-20) Allal, D.; Bannister, R.; Buisman, K.; Capriglione, D.; Di Capua, G.; García Patrón Mendiburu, Martín; Gatzweiler, T.; Gellersen, F.; Harzheim, T.; Heuermann, H.; Hoffmann, J.; Izbrodin, A.; Kuhlmann, K.; Lahbacha, K.; Maffucci, A.; Miele, G.; Mubarak, F.; Salter, M.; Pham, T. D.; Sayegh, A.; Singh, D.; Stein, F.; Zeier, M.
In this paper research activities developed within the FutureCom project are presented. The project, funded by the European Metrology Programme for Innovation and Research (EMPIR), aims at evaluating and characterizing: (i) active devices, (ii) signal- and power integrity of field programmable gate array (FPGA) circuits, (iii) operational performance of electronic circuits in real-world and harsh environments (e.g. below and above ambient temperatures and at different levels of humidity), (iv) passive inter-modulation (PIM) in communication systems considering different values of temperature and humidity corresponding to the typical operating conditions that we can experience in real-world scenarios. An overview of the FutureCom project is provided here, then the research activities are described.
Restringido
PIM antenna testing facility at INTA. Large european deployable antenna application
(University of Georgia, 2018-09-20) García Patrón Mendiburu, Martín
In this paper we present the RF Transparent Low Passive Intermodulation (PIM) Thermal Chamber, which has been designed at the Electric and RF Testing Area of the Spanish National Institute of Aerospace Technique (INTA). This facility will be used in the testing campaign for the reflective mesh of the Large European Antenna (LEA) program. A brief sketch of the planned testing campaign for the LEA’s mesh structure will also be presented.
Restringido
High power resonant line system for corona and multipactor testing
(Universidad Politécnica de Valencia, 2017-04-06) García Patrón Mendiburu, Martín
Space technology designers have nowadays to deal with an incessant demand of radiofrequency power, therefore the necessity to dispose of higher power test beds. Different strategies have been used that usually entail cost and design difficulties. In this paper a new focus on the issue is taken: a high power resonant line system, especially applicable for bidirectional devices multipactor and corona testing, is presented. The idea is to perform a full reflection of the carrier signal hence producing a stationary wave all along the line with peaks and nulls spread every λ/4. By means of a variable phase shifter every single point of the system will go through the complete range of incident and reflected power interference, in an ideal case from the total absence of power to a 6 dB gain with respect to the input signal power. Considering that high power breakdown effects are peak voltage dependent any gain obtained by the explained method would be of usefulness. The proposed system is made up of commercial components with no special characteristic provided they withstand the maximum power levels that are to be reached. Besides, tuning is not dependent on temperature or pressure and it also is able to work in a wide bandwidth. Detection methods must be reviewed for some are not applicable and others must be reconfigured. A bit more complex than usual calibration task is required and secondary effects in power measurements must be considered. A campaign of multipactor and corona tests, in continuous and pulsed power modes, has been carried on a system like the one described to demonstrate its functionality.
Restringido
EMC test campaign on VEGA C launcher upper stage
(Institute of Electrical and Electronics Engineers, 2020-09-25) Jiménez Lorenzo, María; Ortiz Martín, Jesús; Albano, Rocco; López Sanz, Daniel; Morales Blanco, C.; Añón Cancela, M.; Ministerio de Ciencia e Innovación (MICINN)
The purpose of this paper is to summarize the Electromagnetic Compatibility (EMC) test campaign carried out in the EMC Area of Spanish National Institute for Aerospace Technology (INTA) [1] of the fourth stage of the European VEGA-C launcher of the European Space Agency. This is a new launcher version which maiden flight is planned for 2020. It is an evolutionary development of its predecessor VEGA launcher, with larger Payload mass launch capability in Low Earth Orbit. The requirements for the EMC testing in space engineering are included in ECSS-E-ST-E-20-07C rev. 1 standard [2] but they usually must be adapted to each mission or project, as the requirements and electromagnetic environment are unique for each of them. This implies an intensive engineering analysis to develop the test specification and run the qualification EMC test campaign. The main characteristics of the radiated and conducted EMC tests carried out under INTA's responsibility are shown, focusing on the main challenges encountered and the way to sort them out. They are not only related to EMC requirements of the project, but also to the inherent difficulties in the management and handle of a large dimensions and complex system such as a launcher's upper stage.
Restringido
EMC Challenges for ESA Scientific Missions
(Institute of Electrical and Electronics Engineers, 2018-10-08) Muñoz Hernández, Alfonso; Jiménez Lorenzo, María; Gala Escolar, José; López Sanz, Daniel; Arnau Trillol, Alejandro; Añón Cancela, M.; Agencia Estatal de Investigación (AEI)
The new scientific European Space Agency (ESA) missions are demanding new restrictions for Electromagnetic compatibility (EMC) coming from the scientists. The observation of the deep space, our closer planets and stars requires the measurement of very low Electric and Magnetic fields that imposes important challenges of EMC compatibility for all the on-board equipment of the satellite. This paper presents these new requirements for emission (E-field and H-field) and magnetic fields for two of the last ESA mission; Solar Orbiter and Juice and compare them with the standards requirement coming from the ESA standards. These challenges will appear in two of the development phases: design phase and verification phases. These new requirements shall be taking into account in the design but also during the verification and testing. The measurements required for the verification of these requirements are also an important challenge. This paper shown the test challenge during the verification.
Restringido
Desarrollo de algoritmos para la caracterización electromagnética en espacio libre
(Universidad de Málaga, 2022-09-07) Cidrás Estévez, J.; Plaza Gallardo, B.; Ramos Somolinos, D.; Poyatos Martínez, D.; Ministerio de Ciencia e Innovación (MICINN)
Obtaining electromagnetic (EM) characterization of 3D printed, composite materials or a combination of them is essential to ensure safety and EM compatibility. Free space methods are widely used for this purpose, despite their inherent practical difficulties. This article describes the development of a series of algorithms for the extraction of the permittivity and permeability of dielectric materials from free space measurements between 6 and 13 GHz. The extracted properties are obtained from the transmission and reflection coefficients using the Time- Domain Gating from a vector spectrum analyzer (VNA).
Restringido
Diseño y caracterización de una urna de protección frente a contaminación ambiental para ensayos de EMC
(Gobierno de España: Aragón, 2022-11-25) Jiménez Lorenzo, María; Plaza Gallardo, B.; López Sanz, Daniel; Poyatos Martínez, D.
Para poder cumplir con los requisitos de contaminación ambiental y, en ocasiones, de protección planetaria en las unidades de vuelo de una misión espacial, todas las actividades (integración, validación y ensayos) deben realizarse en condiciones de limpieza. En el caso concreto de los ensayos de Compatibilidad Electromagnética (EMC), se hace necesario el diseño y la fabricación de una urna de protección planetaria que no interfiera en los resultados y que permita mantener los requisitos de limpieza durante los mismos. Para cumplir con estos requisitos, la urna debe ser fabricada empleando materiales lo más transparentes posible a los campos electromagnéticos para las frecuencias de ensayo. Para la elección del material, se ha realizado la caracterización electromagnética de distintos materiales compuestos susceptibles de ser usados para esta aplicación. Como resultado, se ha elegido el material que mejores características presenta en el rango de frecuencia en el que se va a ensayar el instrumento. Una vez seleccionado el material, se procede al diseño de la estructura y a la fabricación de la urna de protección. EL INTA, en el marco del proyecto eSAFE ((PID2019-106120RB- C32), financiado por el Ministerio de Ciencia e Innovación (MICINN), trabaja en la caracterización electromagnética de materiales y en cómo su aplicación puede mejorar los resultados obtenidos en los ensayos de EMC. En esta comunicación, se explica el proceso de desarrollo y fabricación de una urna de protección y su caracterización electromagnética. Además, se incluyen simulaciones del comportamiento electromagnético de la urna, que serán validados con medidas en cámara semianecoica y anecoica. Esto permitirá avanzar en la comprensión del comportamiento electromagnético de este tipo de estructuras y materiales, e investigar en nuevas geometrías y materiales durante la fase de diseño que mejoren las prestaciones finales de las urnas diseñadas para proyectos futuros.
Restringido
EMC en UAVs con fuselajes inteligentes
(Gobierno de España: Aragón, 2022-11-25) Poyatos Martínez, D.; Añón Cancela, M.
Restringido
Electromagnetic characterization of lunar dust simulants
(Institute of Electrical and Electronics Engineers, 2022-03-27) Cidrás Estévez, J.; Ramos Somolinos, D.; Plaza Gallardo, B.; Stepanyan, Narek; Cowley, Aidan; Poyatos Martínez, D.; Ministerio de Ciencia e Innovación (MICINN)
Even though the colonization of the Moon is still a long term objective for mankind, there already exist studies analysing the different usages lunar dust (regolith) might have. Following this idea, several simulants of the real regolith have been developed in order to understand its behaviour and be able to work with it in a more efficient way. This paper intends to contribute to those efforts, investigating the electromagnetic properties of EAC-1A and JSC-2A, which had never been measured before. This document presents the results obtained in terms of complex permittivity, complex permeability and tangent loss of the aforementioned regolith simulants at ambient temperature from 400 MHz to 20 GHz. Furthermore, a comparison among both simulants, previously measured ones and real samples is held. The measurements were carried out by means of two different non-resonant techniques, the Open-Ended Coaxial Probe (OECP) and the Transmission Line Method, using DAK and EpsiMu kits respectively.

Buscar

Envíos recientes