2019 ESA Workshop on Aerospace EMC (Aerospace EMC)最新文献

{"title":"Solar Orbiter Strategies for EMC Control and Verification","authors":"M. Pudney, S. King, T. Horbury, M. Maksimović, C. Owen, P. Laget","doi":"10.23919/AeroEMC.2019.8788930","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788930","url":null,"abstract":"Solar Orbiter, due for launch in February 2020, is an ESA mission to investigate how the Sun creates and controls the heliosphere. Solar Orbiter will combine insitu particle and field measurements with remote sensing observations of the Sun taken as close as 0.28AU (astronomical units). In order to make in-situ measurements, particularly at particle kinetic scales, it is necessary to establish and maintain control of the electro-static (ESC) and electro-magnetic compatibility (EMC), between platform and instruments alike. We present the strategies employed in the ESC/EMC control of the Solar Orbiter mission, touching on the properties of key equipment such as the Solar Arrays, Reaction Wheels and Instrument Boom (I-Boom), and the proposed verification methodology for the system level EMC test campaign due to take place in 2019.","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128246262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"International Requirements for Payload Multi-Platform Reuse Methodology","authors":"P. Edwards, Jarek A. Tracz, D. Trout, Noel Sargent","doi":"10.23919/AeroEMC.2019.8788914","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788914","url":null,"abstract":"In this paper, we discuss the need for international requirements to assure the EMC of Payload (Instruments/Experiments) use on multi-agency, multinational collaborations and multi-platform re-use. We examine possible environment exposures through mission life-cycle stages and the impact to EMC requirements and environment limits based on the processing path. We comment on existing Agency/National space standards, the level of harmonization between them, and possible integration to provide a common International Space Standard that would provide reasonable product assurance for EMC. We look at ISO 14302, and suggest revision/creation of a top-tier management document that facilitates the necessary EMI control methodology for multi-Agency, multi-national and multi-platform programs; integrated use of the individual agency/national space standards and international consensus on mandatory minimum environment levels.","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125538821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spice Modeling of Probes for Pulse Current Injection","authors":"X. Liu, L. Crosta, F. Grassi, G. Spadacini, S. Pignari, F. Trotti, N. Mora, W. Hirschi","doi":"10.23919/AeroEMC.2019.8788951","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788951","url":null,"abstract":"In this paper, a SPICE model of a typical nanocrystalline core used for the manufacturing of pulse current injection probes is presented. The model aims at accounting for the frequency response of the material initial complex permeability spectra (small-signal model) as well as for possible saturation occurring within the magnetic core due to the injection of high-amplitude stress waveforms. Strengths and limitations of the proposed prediction model are assessed versus time-domain measurement of the voltage induced at the terminations of the wiring structure under test, when a damped-sinusoidal waveform is injected at the core input port.","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122219722","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"AMBRE: A Compact Instrument to Measure Thermal Ions, Electrons and Electrostatic Charging Onboard Spacecraft","authors":"B. Lavraud, A. Cara, D. Payan, Y. Ballot, J. Sauvaud, R. Mathon, T. Camus, O. Chassela, H. Séran, H. Tap, O. Bernal, M. Berthomier, P. Devoto, A. Fedorov, J. Rouzaud, J. Rubiella-Romeo, J. Techer, D. Zely, S. Galinier, D. Bruno","doi":"10.23919/AeroEMC.2019.8788933","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788933","url":null,"abstract":"The Active Monitor Box of Electrostatic Risks (AMBER) is a double-head thermal electron and ion electrostatic analyzer (energy range 0–30 keV) that was launched onboard the Jason-3 spacecraft in 2016. The next generation AMBER instrument, for which a first prototype was developed and then calibrated at the end of 2017, constitutes a significant evolution that is based on a single head to measure both species alternatively. The instrument developments focused on several new sub-systems (front-end electronics, highvoltage electronics, mechanical design) that permit to reduce instrument resources down to ∼ 1 kg and 1.5 W. AMBER is designed as a generic radiation monitor with a twofold purpose: (1) measure magnetospheric thermal ion and electron populations in the range 0–35 keV, with significant scientific potential (e.g., plasmasphere, ring current, plasma sheet), and (2) monitor spacecraft electrostatic charging and the plasma populations responsible for it, for electromagnetic cleanliness and operational purposes.","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126582131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Scaled Measurements of Timevariant GNSS Propagation Channels","authors":"O. Kerfin, Marvin Schwarz, R. Geise","doi":"10.23919/AeroEMC.2019.8788937","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788937","url":null,"abstract":"GNSSs (global navigation satellite systems) are an important worldwide standard for localisation methods. Prospective applications such as air transport with unmanned aircraft systems (UAS) in complex nonstatic urban environments will rely on GNSS signal integrity more than ever. Therefore, a basic approach for the analysis of timevariant GNSS propagation channels in a scaled measurement environment is introduced. A laboratory test bench is set up for the analysis of various generic GPS (Global Positioning System) channel configurations on a scale of 1:10. Time domain zero span measurements and a quasistatic channel characterisation are discussed. Corresponding measurement results are presented for different artificial interference scenarios. Finally, performance mitigation of a hardware GPS receiver due to the modulation of artificial navigation data with the measured channel properties is assessed.","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134156960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advances in Reaction Wheel Design for Magnetic Cleanliness","authors":"M. Pudney, S. King, C. Trenkel, F. Liebold, S. Strandmoe, P. Meyer, M. Ehinger","doi":"10.23919/AeroEMC.2019.8788960","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788960","url":null,"abstract":"Scientific spacecraft that measure the local magnetic environment in which they fly need to minimize any disturbance caused by the spacecraft itself. Attitude control reaction wheels, often accommodated to meet pointing requirements, are a known source of disturbance to both the DC and AC magnetic fields. Previous missions (such as on Cassini and MESSENGER) have typically reduced the disturbance effect by using a shield applied externally on standard commercial wheels. We present a reaction wheel assembly that applies a broader strategy of both internal and external disturbance field reductions within the context of the Solar Orbiter mission. Compared to standard commercial wheels with no mitigation, a resulting improvement of the magnetic field generated at the fundamental rotation rate of the reaction wheel by approximately 100dB is predicted.","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"49 1-2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123519710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aviation Equipment and the Application of the Radio Equipment Directive (RED)","authors":"R. Kebel, Uwe Schwark, M. Schirrmacher","doi":"10.23919/AeroEMC.2019.8788924","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788924","url":null,"abstract":"The directive 2014/53/EU [1] formulates in contrast to the EMC directive 2014/30/EU [2] not only the essential requirement of electromagnetic compatibility (EMC), but also the essential requirements of safety, health and efficient use of spectrum for any radio transmitting equipment for the European market. The radio equipment directive 2014/53/EU (RED) shall ensure that equipment is not causing any harm to the public and operates safely without interfering other communication services. Aeronautic equipment had been exempt from application of either directive. The applicability question is a bit more complex for aircraft equipment which transmits radio signals within non-aeronautic frequency bands, e.g. a Wi-Fi access point. Technically, the aircraft mounted access point should not interfere with the ground networks, for example when the aircraft is parking on ground. Annex I of the RED exempts products, parts and equipment on board aircraft which fall within the scope of the article 3 of Regulation (EC) No 216/2008 of the European Parliament and of the Council [3]. This exception clearly applies to aeronautical equipment operating in the aeronautical frequency band. For equipment not covered by Article 3 of Regulation (EC) No 216/2008 of the European Parliament and of the Council [3] operating outside the aeronautical frequency band, the basic requirements are laid down in the RED. Since a decade, there are aeronautical devices, for example wireless access points for Wi-Fi, which transmit signals in the non-aeronautical radio frequency bands, but also could seemingly fall under the scope of the RED and the telecommunication regime. This leads to the question if and how far the RED is applicable. Unnecessary duplication of qualifications against aviation and also non-aviation standards, for example for demonstrating electromagnetic compatibility has to be avoided strictly in order to achieve EMC and avoid incompatibilities. This paper clarifies the applicability of standards and the essential requirements of the RED. It explains measures which have to be taken to avoid conflicting with the technically relevant essential requirements of RED or the aviation requirements. It explains by the example of an aircraft-installed access point formal and technical needs of equipment qualification.","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115931699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adaption of Magnetic Cleanliness Facilities and Procedures to Overcome the New Challenges of the Scientific Missions","authors":"M. Michelena, M. Á. Rivero, J. de Frutos, A. Ordoñez‐Cencerrado, J. Mesa","doi":"10.23919/AeroEMC.2019.8788959","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788959","url":null,"abstract":"Scientific goals in magnetometry require extremely high resolution magnetometers, a very good program of magnetic cleanliness and a powerful processing methodology. When magnetic cleanliness reaches its limits the exhaustive characterisation of the magnetic signature of the different subsystems together with compensation systems (HW) and algorithms (SW) may be the only way to achieve the performance demanded by the scientific objectives. Furthermore, exploration horizons, only within the limits of our Solar System, present scientific challenges in harsh conditions which comprise, among others, extreme swings of temperature. The magnetic properties of materials depend on temperature and the electrical resistance of wires and coils too. Therefore in wide temperature ranges the behaviour of the magnetic signature with temperature needs to be analysed, minimized when possible, and introduced in the retrieval algorithms for an optimal response. The requirements for the subsystems are present in their testing route documentation. However there are not standards or norms with the established procedures to develop these tests. In this work the INTA Space Magnetism Laboratory will overview different methodologies implemented for standard tests, will introduce some of the upcoming and challenging requirements and will present some of the solutions implemented.","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116194404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Magnetic Coil Facility for Magnetic Cleanliness, Characterization and Susceptibility","authors":"M. Cucca, M. Marzot, A. Del Prete, A. Leone, E. Ferrari","doi":"10.23919/AeroEMC.2019.8788911","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788911","url":null,"abstract":"The experience done by Thales Alenia Space on magnetic cleanliness [1] and characterization during Rosetta and Bepi Colombo reveal some limitations on the measurement system used. For this reason, it was decided to design and manufacture a new MCF (Magnetic Cleanliness Facility), adequate to enlarge the capabilities to support testing of spacecraft with stringent magnetic requirements, to allow the repeatability of the measurement and the possibility to use user defined magnetic patterns. The main test activities supported by the new facility are: ‐DC (Direct Current) and AC (Alternate Current) magnetic field measurements; ‐Magnetic cleanliness on electronic equipments or mechanical parts of the S/C (Space/Craft) ‐Magnetic field susceptibilty tests (DC or low freq. magnetic fields and AC fields). This paper aims to describe in details the design of this new facility, the validation activities performed and the first testing activities on going in TASInI TO (Thales Alenia Space in Italy Torino).","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131399053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of RF spurious radiation from units on a satellite VHF receiver","authors":"G. Galgani, G. Scozza, E. Scione, P. Pavia, D. Bibby, S. Osborne","doi":"10.23919/AeroEMC.2019.8788926","DOIUrl":"https://doi.org/10.23919/AeroEMC.2019.8788926","url":null,"abstract":"Use of the VHF frequency band is becoming more common on modern telecommunication and earth observation satellites due to the relatively simple and low cost antennas, wide coverage and highly reliable communication links. Utilising the VHF band requires a significant effort in terms of electric field analysis to predict electromagnetic compatibility issues. EMC issues become critical for these applications due to the very high sensitivity of VHF receivers installed on the satellite. In this frame, Electromagnetic modeling is fundamental to identify potential risks and to reduce and optimize the number of tests at satellite level. This is a challenging task due the large number of equipments emitting in this range. The scope of this paper is to describe the approach followed on Copernicus Sentinel-1 C&D satellites to predict, by EM modeling tools: 1) the electric field levels generated by, and, on-board equipment inside the satellite cavity and, 2) the associated interfering power coupled to the victim antenna. The proposed approach has been implemented by the GALILEO-EMT[1] and can be also effectively extended to other frequency ranges using the proper electromagnetic solver suitable for each frequency band.","PeriodicalId":436679,"journal":{"name":"2019 ESA Workshop on Aerospace EMC (Aerospace EMC)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132664043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}