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NASA Near Earth Network (NEN) Support for Lunar and L1/L2 CubeSatsThe NASA Near Earth Network (NEN) consists of globally distributed tracking stations, including NASA, commercial, and partner ground stations, that are strategically located to maximize the coverage provided to a variety of orbital and suborbital missions, including those in LEO, GEO, HEO, lunar and L1/L2 orbits. The NENs future mission set includes and will continue to include CubeSat missions. The majority of the CubeSat missions destined to fly on EM-1, launching in late 2018, many in a lunar orbit, will communicate with ground based stations via X-band and will utilize the NASA Jet Propulsion Laboratory (JPL) developed IRIS radio. The NEN recognizes the important role CubeSats are beginning to play in carrying out NASAs mission and is therefore investigating the modifications needed to provide IRIS radio compatibility. With modification, the NEN could potentially expand support to the EM-1 lunar CubeSats.The NEN could begin providing significant coverage to lunar CubeSat missions utilizing three to four of the NENs mid-latitude sites. This coverage would supplement coverage provided by the JPL Deep Space Network (DSN). The NEN, with smaller apertures than DSN, provides the benefit of a larger beamwidth that could be beneficial in the event of uncertain ephemeris data. In order to realize these benefits the NEN would need to upgrade stations targeted based on coverage ability and current configuration/ease of upgrade, to ensure compatibility with the IRIS radio. In addition, the NEN is working with CubeSat radio developers to ensure NEN compatibility with alternative CubeSat radios for Lunar and L1/L2 CubeSats. The NEN has provided NEN compatibility requirements to several radio developers who are developing radios that offer lower cost and, in some cases, more capabilities with fewer constraints. The NEN is ready to begin supporting CubeSat missions. The NEN is considering network upgrades to broaden the types of CubeSat missions that can be supported and is supporting both the CubeSat community and radio developers to ensure future CubeSat missions have multiple options when choosing a network for their communications support.
Document ID
20170006638
Document Type
Conference Paper
Authors
Schaire, Scott
(NASA Wallops Flight Facility Wallops Island, VA United States)
Altunc, Serhat
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Wong, Yen
(NASA Goddard Space Flight Center Greenbelt, MD United States)
Shelton, Marta
(NASA Wallops Flight Facility Wallops Island, VA United States)
Celeste, Peter
(Booz-Allen and Hamilton, Inc. Seabrook, MD, United States)
Anderson, Michael
(Booz-Allen and Hamilton, Inc. Seabrook, MD, United States)
Perrotto, Trish
(Booz-Allen and Hamilton, Inc. Seabrook, MD, United States)
Date Acquired
July 18, 2017
Publication Date
August 1, 2017
Subject Category
Communications And Radar
Report/Patent Number
GSFC-E-DAA-TN44287
Meeting Information
International Workshop on Small Satellites for Space Weather Research and Forecasting(Washington, DC)
Funding Number(s)
CONTRACT_GRANT: NNG15CR66C
PROJECT: 453
Distribution Limits
Public
Copyright
Public Use Permitted.

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