39 results found Selected 0 items No itemsClear selection Select / deselect all results (all pages, 39 total) Advanced Antenna Modelling Tool for Performance Verification and Diagnosis Some applications require a good assessment of the antenna performance in the presence of manufacturing and assembly tolerances. This is for example the case of radiometry, for which an accurate knowledge of the full pattern, even in the low side lobes, is required. This is also the case of radar systems where good knowledge of side lobe levels within determined angular ranges is required to ensure high resolution. In particular, when the antenna operates at lower frequencies, interaction with the platform cannot be neglected and has a non-negligible impact on side lobe level. Denmark GSTP GT11-020EF TICRA Fond 2020 - 2021 Advanced Antenna Modelling Tool for Performance Verification and Diagnosis E.inspector phase A The E.Inspector mission objectives are to:* Image an ESA owned space debris in its current status * Use obtained images for the verification and validation of the e.deorbit or space tug GNC sensorsFollowing a successful ESA internal CDF study, the mission is now proposed to go to phase A to be studied by industry.Several drivers make this mission design challenging:* A possible long and large (delta-V) transfer to the target* Compliance to Space Debris Mitigation guidelines from possibly high altitude* A close RDV while maintaining keep-out zones and ensuring passively safe trajectories* Tr Italy GSTP G637-001TFac POLITECNICO DI MILANO 2020 - 2021 E.inspector phase A WeatherCubes demonstrator . Sweden GSTP GT17-137TIf OMNISYS INSTRUMENTS AB 2019 - 2021 WeatherCubes demonstrator High Fidelity Channel Modelling for GNSS Receiver Performance Characterization The effects of propagation impairments, in particular multipath on GNSS receivers is well known, affecting availability, accuracy and continuity of service. Initial investigations on the possibility to reduce complexity of channel models for characterizing GNSS Rx in terms of tracking and/or PVT performance has been performed for example in the "GALILEO SIS TESTING" activity.Although promising results have been seen for the characterization of the statistics of the Rx, still limitations exist in this model reduction for characterising punctual fails (e.g. false lock due to high delay). Austria TDE T607-301EE JOANNEUM RESEARCH FORSCHUNGSGESELLSCHAFT 2016 - 2021 High Fidelity Channel Modelling for GNSS Receiver Performance Characterization Accurate RF material characterisation using scattering measurements from Quasi-Optical bench Many different materials and composite materials are used in the field of antennas.Examples are dielectrics, frequency/polarisation selective surfaces, sandwich structures, Carbon Fiber Reinforced Plastics, ceramics, metal plates that can beseen in application ranging from low frequencies up to sub-mm waves. Anaccurate RF characterization of these materials is of vital importance for all future space missions. United Kingdom GSTP G617-051EE ROGER APPLEBY MMW CONSULTING LIMITED 2016 - 2020 Accurate RF material characterisation using scattering measurements from Quasi-Optical bench Characterization of the susceptibility of SpaceWire (SpW) links to common mode SpaceWire links (based on LVDS for the physical layer) are used extensively on-board Earth Observation, Science and Exploration spacecraft, in particular to transmit science data. MTG and Plato are typical examples out of many. The trend is to use higher data rates over longer cable lengths. Spain TDE T707-501EE ALTER TECHNOLOGY TUV NORD S.A. 2017 - 2020 Characterization of the susceptibility of SpaceWire (SpW) links to common mode DTU-ESA coordinated antenna laboratory performance upgrade The DTU-ESA Facility complements the ESTEC test facilities in supplying ESA with high-accuracy (~0.001 db) antenna calibration services. In recent years, the DTU-ESA Facility has contributed to ESA missions such as SMOS, SENTINEL-1 and Galileo, and provided its assistance and expertise for the new ESTEC test facilities. There is a need to develop the antenna test capability which entails all steps of facility operation, in particular the following aspects will be dealt with microwave and data acquisition hardware/software, alignment tools, probe system. Denmark GSTP G617-186EE TECHNICAL UNIVERSITY OF DENMARK 2016 - 2019 DTU-ESA coordinated antenna laboratory performance upgrade Multiple Beam Antennas based on Reflectarrays Transmitarrays Reflectarrays and transmitarrays can be designed to steer the reflected and transmitted beam away from the specular direction or to shape it according to preassigned requirements. Their properties can be tuned also with respect to the frequency. Their increased number of degrees of freedom may be beneficial in the design of multibeam antennas. Spain TDE T507-409EE UNIVERSIDAD POLITECNICA DE MADRID - UPM 2016 - 2019 Multiple Beam Antennas based on Reflectarrays Transmitarrays Large-area staring kinetic inductance focal plane array operating at elevated temperature Imaging at frequencies in the Terahertz (THz) region of the electromagnetic spectrum has progressed rapidly in the past few years and even commercial terrestrial systems have started to emerge. Lately there is significant interest in stand-off detection and imaging. The technology push is aimed at the development of multi-element multi-frequency THz cameras with high image and spectral resolution. These systems will find wide-spread use in both space and terrestrial applications. Finland GSTP G617-171EE MILLILAB/VTT 2015 - 2019 Large-area staring kinetic inductance focal plane array operating at elevated temperature Magnetic Field Perturbations by Thermo-Electric Effects Moving charges produce magnetic fields. Since thermal transients produce an electric current, thermal transients produce magnetic fields. It has been shown that the generation of these magnetic fields in the vicinity of sensitive instruments leads to a degradation of recorded data. Getting closer to a theoretical solution and to an effective mitigation technique will help magnetic missions in ESA’s Science programme, Earth Observation programme and, in fact, all missions that employ magnetic-sensitive sensors. Romania Discovery 15/016-b ROMANIAN ACADEMY CLUJ-NAPOCA BRANCH 2017 - 2019 Magnetic Field Perturbations by Thermo-Electric Effects Pagination « First First page ‹‹ Previous page 1 2 3 4 ›› Next page Last » Last page Filter by Programme TDE (17) Discovery (11) GSTP (11) Filter by Start Year 2020 (9) 2016 (6) 2021 (5) 2012 (4) 2019 (4) 2015 (3) 2017 (3) 2018 (2) 2022 (2) 2013 (1) Filter by End Year 2023 (11) 2021 (6) 2022 (6) 2018 (4) 2019 (4) 2017 (3) 2014 (2) 2020 (2) 2024 (1) Filter by Keywords 1-Microwave Payloads (7) 0-Navigation (4) 0-Telecommunications Technologies (2) Magnetometers (2) 0-Telecommunications (1) 2-Ground Segment Technology (1) 3-Platforms / Others (1) 7-Electromagnetic Technologies and Techniques (1) 10-Communications & Navigation (1) 32-Clean Space (1) 99-Others (1) cryptographic protocols (1) electric propulsion (1) electrostatic thruster (1) EMC (1) frequency-combs (1) GNSS altimetry (1) GNSS reflection (1) GOCE (1) LISA (1) magnetic fields (1) magnetic powder (1) magnetic shielding (1) Mega Constellations (1) Megaconstellations (1) quantum computing (1) Quantum Optics (1) quantum sensors (1) Space Weather (1) Swarm (1) Filter by Contractor TICRA Fond (4) OMNISYS INSTRUMENTS AB (2) SENER TAFS, S.A.U. 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