2019 8th International Workshop on Tracking, Telemetry and Command Systems for Space Applications (TTC)最新文献

{"title":"Software-defined testbed for next generation navigation transponders","authors":"S. Speretta, Hong Yang Oei, A. Busso, C. Verhoeven, D. Dirkx, V. Karunanithi, M. Bentum, Odysseas Votsis, A. Miraglia, J. Rotteveel, M. Alvarez","doi":"10.1109/TTC.2019.8895459","DOIUrl":"https://doi.org/10.1109/TTC.2019.8895459","url":null,"abstract":"This paper presents a software-defined testbed to perform hardware-in-the-loop test of miniaturized coherent transponders. Such a setup has been designed to minimize the access threshold for future users, heavily relying on available open source applications and commercial hardware, targeting future coherent transponders for interplanetary CubeSats. The paper presents the overall architecture of the testbed, a tradeoff to select the most suited development framework and the detailed design of the different blocks. Upcoming interplanetary CubeSat missions that would require a coherent transponder are also presented to highlight the need sof such a system. Software qualification, given the use of third-party software with multiple developers, was also addressed to guarantee performances can be consistent and reliable.","PeriodicalId":330874,"journal":{"name":"2019 8th International Workshop on Tracking, Telemetry and Command Systems for Space Applications (TTC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114866710","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":"SCCC SW EGSE: A software simulator of a satellite downlink communication compliant with the CCSDS 131.2-B-1 standard, with Hardware-In-The-Loop capabilities","authors":"Lorenzo Diana, Gianluca Giuffrida, Marco Marini, Riccardo Cassettari, Daniele Davalle, L. Fanucci","doi":"10.1109/TTC.2019.8895386","DOIUrl":"https://doi.org/10.1109/TTC.2019.8895386","url":null,"abstract":"Nowadays the number of Earth Observation (EO) missions are exponentially increasing. Each satellite may embark payloads which produce a big amount of data, up to Gb/s. CCSDS 131.2-B-l standard is suitable for this kind of missions, in particular for those in which data have to be transmitted to the ground in varying orbit conditions, e.g., Low Earth Orbit (LEO) missions. Since the available systems for the validation of the CCSDS 131.2-B-l compliant device are usually expensive, the adoption of this standard for low budget missions (e.g., missions based on nano and micro satellites) is not widespread. In this paper, the SCCC SW EGSE is presented, a software tool which allows to simulate and test CCSDS 131.2-B-l compliant transmitters during development phase. SCCC SW EGSE is also equipped with hardware-in-the-loop capability, and therefore represents an affordable and complete solution supporting the development of CCSDS 131.2-B-l transmitters, from the algorithm modelling phase down to the hardware implementation.","PeriodicalId":330874,"journal":{"name":"2019 8th International Workshop on Tracking, Telemetry and Command Systems for Space Applications (TTC)","volume":"31 4-5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116780504","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":"The Solar Orbiter X-Band TT&C New Features: GMSK with PN Regenerative Ranging and DDOR Semaphores Implementation","authors":"M. Mascarello, G. Sessler, E. Vassallo, G. R. Iglesias, Kevin Kewin, M. Montagna, Leticia Manso","doi":"10.1109/TTC.2019.8895263","DOIUrl":"https://doi.org/10.1109/TTC.2019.8895263","url":null,"abstract":"Solar Orbiter is an ESA mission in cooperation with NASA scheduled for launch in February 2020. The Solar Orbiter spacecraft will enter, after a multi-year cruise phase, into an elliptical orbit around the sun with a perihelion of around 0.3 AU and an increasing inclination of up to 35° to return images of the solar polar regions and to probe the plasma of the inner heliosphere.As all deep space missions, Solar Orbiter has a severely power limited data downlink, which means that optimizing the science data return of the mission within the given constraints is of paramount importance.The Solar Orbiter mission operations centre has consequently optimized the concept, technique and duration of the required ranging transmissions to improve the science data return while meeting the orbit determination requirements for flying the mission through multiple planetary gravity assists.Solar Orbiter TT&C subsystem is derived from the successful Bepi Colombo design that implemented for the first time the CCSDS recommended Pseudo Noise (PN) regenerative ranging with residual carrier telemetry modulation schemes like NRZ-L/PSK/PM or SP-L/PM. In order to provide the required mission science data return and, due to the bandwidth limitation of the SP-L/PM modulation, GMSK (Gaussian Minimum Shift Keying) modulation was included in the Solar Orbiter design allowing increased telemetry data rates up to 1 Mbps while NRZ-L/PSK/PM and SP-L/PM were kept for lower data rates.Successful in-flight utilization of GMSK modulation with the Herschel and Planck spacecraft in 2009, Gaia in 2013 and ExoMars TGO in 2016, has increased the interest to investigate the possibility of utilizing GMSK modulation simultaneously with PN regenerative ranging. As such ESA started to investigate this technique for Lagrange and Deep Space missions as part of the CCSDS standardization activities. The development activities started in 2012 and the first tests with a ground station modem breadboard [7] to demonstrate the concept feasibility were performed in 2014 at the ESOC reference station in Darmstadt.Being GMSK a suppressed carrier modulation, it does not allow to use at the same time the ESA standard phase modulated ranging signals (based on a residual carrier) so that dedicated ranging sessions were needed in the missions flown so far. Alternating sessions with residual carrier modulation of low rate telemetry plus ESA standard ranging and sessions with suppressed carrier GMSK modulation of high rate telemetry had to be performed in each communication pass in order to allow gathering of the required ranging data for orbit determination while meeting the scientific data volume requirements.To avoid such inefficient mode switching, the use of simultaneous GMSK telemetry modulation with PN regenerative ranging was studied in CCSDS and a recommend standard was published. Solar Orbiter adopted and implemented it both on board and on ground.The Bepi Colombo transponder also implemented the gener","PeriodicalId":330874,"journal":{"name":"2019 8th International Workshop on Tracking, Telemetry and Command Systems for Space Applications (TTC)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125896978","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":"ESOC Ground Station Architecture for OPS-SAT","authors":"André Løfaldli, H. Ernst, F. Pelorossi, David Evans, M. Flentge, Grzegorz Smolinski","doi":"10.1109/TTC.2019.8895329","DOIUrl":"https://doi.org/10.1109/TTC.2019.8895329","url":null,"abstract":"OPS-SAT is an ESA driven CubeSat mission, expected to launch in late 2019, its TT&C system uses UHF amateur radio and commercial S-band. X-band is used for high data rate downlink. The SMILE Lab at ESOC will serve as the main ground station, with its two antennas ESOC-1 and ESOC-1a.","PeriodicalId":330874,"journal":{"name":"2019 8th International Workshop on Tracking, Telemetry and Command Systems for Space Applications (TTC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121937656","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":"Evaluating the radio frequency interference potential of 5G mobile networks on space links at millimeter waves","authors":"L. Milani, E. Vassallo, M. Arza","doi":"10.1109/TTC.2019.8895480","DOIUrl":"https://doi.org/10.1109/TTC.2019.8895480","url":null,"abstract":"At the next World Radiocommunication Conference 2019 of the International Telecommunication Union, Agenda Item 1.13 will address the identification and the possible additional allocation of radio-frequency spectrum to serve the future development of the International Mobile Telecommunications (IMT) for 2020 and beyond, mainly focused on systems supporting the fifth generation of cellular mobile communications. The frequency range of interest goes from 24.25 to 86 GHz, which fully covers all millimeter bands used or planned by the European Space Agency’s space missions for high data rate transmissions. This paper shows the potential impact of IMT deployments in terms of received radio frequency interference by ESA’s telecommunication links in frequency bands allocated to the Earth Exploration-Satellite Service and to the Space Research Service. Particular focus is given to the ESA’s tracking network and to the earth stations located in New Norcia (Australia), Cebreros (Spain), Malargüe Sur (Argentina) and Kiruna (Sweden). Results are shown in terms of required separation distances, i.e., the minimum distance between the earth station and the IMT station ensuring that the protection criteria for the earth station are met by the emissions of an IMT base station or user equipment. Results point out the need of having separation distances up to 100 km depending on the station and frequency band under consideration.","PeriodicalId":330874,"journal":{"name":"2019 8th International Workshop on Tracking, Telemetry and Command Systems for Space Applications (TTC)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128308274","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":"X-band Integrated Unit with Transponder and High Data Rate Payload Data Transmitter","authors":"F. Bagaglini, L. Simone, T. Tupputi, M. Belardinelli, M. Bertinelli, D. Gelfusa, D. Giancristofaro, E. Rondoni, R. Roscigno, N. Salerno, M. Salvati","doi":"10.1109/TTC.2019.8895468","DOIUrl":"https://doi.org/10.1109/TTC.2019.8895468","url":null,"abstract":"The main technical objectives of the ESA financed activity (ITT 9111 - ESA Contract No. 4000123441/18/NL/FE) currently underway at Thales Alenia Space Italia is the design, development of a breadboard of an integrated Payload Data Transmitter (PDT) and Telemetry, Tracking and Command (TT&C) equipment and its validation. The paper will describe major achievements, key technologies and specific issues of the future integrated communication unit (ICU): in a single very compact equipment both the transponder and high data rate payload data transmitter functionalities are integrated. The ICU under development in TAS-in-Italy is based on new design concepts as long as disruptive technologies aiming to face the emerging so called “NewSpace” market. Leveraging on the many years of experiences on transponder line (well consolidated Digital Signal Processing (DSP) building blocks are used) and developing new and very attractive architecture approach (direct synthesis as opposed to traditional conversion approaches) the paper will show how a very lightweight equipment with reduced components can be conceived. The equipment architecture description will be provided by highlighting key concepts and main components. A section is here devoted to EEE parts quality policy. As far as technology is concerned, the RF-on-PCB will be introduced as a key cornerstone to achieve driver requirements as required by constellation market, e.g., low cost, short lead time and high production rate.","PeriodicalId":330874,"journal":{"name":"2019 8th International Workshop on Tracking, Telemetry and Command Systems for Space Applications (TTC)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130374279","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}