NDLI: 26-GHz data downlink for LEO satellites

Content Provider	IEEE Xplore Digital Library
Author	Rosello, J. Martellucci, A. Acosta, R. Nessel, J. Braten, L.E. Riva, C.
Copyright Year	2012
Description	Author affiliation: (ESA/ESTEC): Noorwijk, Netherlands (Rosello, J.; Martellucci, A.) \|\| (Norweg. Defence Research Cent., FFI): Kjeller, Norway (Braten, L.E.) \|\| (NASA Glenn Research Center): Cleveland, Ohio, USA (Acosta, R.; Nessel, J.) \|\| (POLIMI): Milano, Italy (Riva, C.)
Abstract	State-of-the art downlink technology allows Low Earth Orbit (LEO) satellites for Earth observation (EO) to downlink just above 500 Mb/s in the X-band due to bandwidth limitations. X-band is also becoming very congested. The ITU allocates four times more bandwidth in the 26 GHz band (i.e. 25.5 to 27 GHz) for the EO downlink. This 26 GHz band is particularly challenging in terms of atmospheric propagation effects. Data downlink (DDL) system studies, propagation characterization studies and pre-development of technology are on-going in Europe and in the USA. This paper addresses the main system architecture and related technical challenges. The existing data downlink infrastructure in the 26 GHz band is presented, and then the paper focuses on the programmatic approach both in Europe and in the USA in order to enable future missions to use the 26 GHz data downlink for LEO satellites with data rate capabilities above 1 Gbps by the end of this decade.
Starting Page	111
Ending Page	115
File Size	809549
Page Count	5
File Format	PDF
ISBN	9781457709180
e-ISBN	9781457709203
e-ISBN	9781457709197
DOI	10.1109/EuCAP.2012.6206717
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-03-26
Publisher Place	Czech Republic
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Earth propagation Satellite broadcasting Low earth orbit satellites LEO 26 GHz-band Attenuation Downlink data downlink Antennas
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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