2019 IEEE Topical Workshop on Internet of Space (TWIOS)最新文献

Spacecraft Wireless System Performance Degradation due to Impedance Mismatch in Cables and Connectors 由于电缆和连接器阻抗不匹配导致的航天器无线系统性能下降

2019 IEEE Topical Workshop on Internet of Space (TWIOS) Pub Date : 2019-01-01 DOI: 10.1109/TWIOS.2019.8724536

C. Lansdowne, S. Hwu, D. Fogleman, K. Desilva

{"title":"Spacecraft Wireless System Performance Degradation due to Impedance Mismatch in Cables and Connectors","authors":"C. Lansdowne, S. Hwu, D. Fogleman, K. Desilva","doi":"10.1109/TWIOS.2019.8724536","DOIUrl":"https://doi.org/10.1109/TWIOS.2019.8724536","url":null,"abstract":"Existing cables and connectors between external antennas and internal radios need to be used when retrofitting a deployed space habitat with new wireless communication standards. Electrical performance specifications for these may not have anticipated modern frequencies and data rates, and selection can have been driven by other factors such as vacuum performance of penetrations, and ease of connection and disconnection by a suited astronaut in vacuum. Older cables and connectors could crack and fray with time or degrade due to environmental extremes. Then the radio signals may encounter multiple reflections due to the impedance mismatches within the degraded cables and connectors. This may cause signal distortion and thus degrade the wireless system performance. Performance of the assembled cables cannot be tested on the ground because some segments are already installed in the habitat and a hardware emulator likely would not have identical reflection coefficients. And performance of degraded cables is speculative. Then stochastic investigation becomes necessary, to characterize the probability that a combination of reflections will occur that would so distort the signal as to degrade performance. The purpose of this study is to analyze the mismatch effects of the cables and connectors numerically by using electromagnetic modeling techniques. A computational modeling method used to analyze the impedance mismatch effects for a wireless communication system is presented in this paper. Hardware in the loop is then used to evaluate a pair of actual proprietary receiver implementations against a large sample of possible cable distortions and so quantify technical risk.","PeriodicalId":313665,"journal":{"name":"2019 IEEE Topical Workshop on Internet of Space (TWIOS)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125266790","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}

引用次数: 1

[TWIOS 2019 Breaker page] [TWIOS 2019 break页面]

2019 IEEE Topical Workshop on Internet of Space (TWIOS) Pub Date : 2019-01-01 DOI: 10.1109/twios.2019.8724525

引用次数: 0

Dynamic space link design and verification of the spinning spacecraft mission Eu:CROPIS 旋转航天器Eu:CROPIS任务动态空间链路设计与验证

2019 IEEE Topical Workshop on Internet of Space (TWIOS) Pub Date : 2019-01-01 DOI: 10.1109/TWIOS.2019.8724541

J. Budroweit, M. Drobczyk

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引用次数: 1

Integrated Doherty power amplifiers for satellite systems: challenges and solutions 卫星系统集成多尔蒂功率放大器:挑战和解决方案

2019 IEEE Topical Workshop on Internet of Space (TWIOS) Pub Date : 2019-01-01 DOI: 10.1109/TWIOS.2019.8724532

V. Camarchia, A. Piacibello, R. Quaglia

引用次数: 9

Lightweight security solutions for IoT implementations in space 用于空间物联网实施的轻量级安全解决方案

2019 IEEE Topical Workshop on Internet of Space (TWIOS) Pub Date : 1900-01-01 DOI: 10.1109/TWIOS.2019.8771257

N. Anagnostopoulos, Yufan Fan, T. Arul, Ravi Sarangdhar, S. Katzenbeisser

引用次数: 2

Ku-Band Dual Polarized Phased Array utilizing Silicon Beamforming Chipsets 利用硅波束形成芯片组的ku波段双极化相控阵

2019 IEEE Topical Workshop on Internet of Space (TWIOS) Pub Date : 1900-01-01 DOI: 10.1109/TWIOS.2019.8724517

J. Chieh, Everly Yeo, M. Kerber, R. Olsen

引用次数: 6