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On-Orbit Validation of a Framework for Spacecraft-Initiated Communication Service Requests with NASA's SCaN TestbedWe design, analyze, and experimentally validate a framework for demand-based allocation of high-performance space communication service in which the user spacecraft itself initiates a request for service. Leveraging machine-to-machine communications, the automated process has potential to improve the responsiveness and efficiency of space network operations. We propose an augmented ground station architecture in which a hemispherical-pattern antenna allows for reception of service requests sent from any user spacecraft within view. A suite of ground-based automation software acts upon these direct-to-Earth requests and allocates access to high-performance service through a ground station or relay satellite in response to immediate user demand. A software-defined radio transceiver, optimized for reception of weak signals from the helical antenna, is presented. Design and testing of signal processing equipment and a software framework to handle service requests is discussed. Preliminary results from on-orbit demonstrations with a testbed onboard the International Space Station are presented to verify feasibility of the concept.
Document ID
Document Type
Technical Memorandum (TM)
Adam M Gannon (Glenn Research Center Cleveland, Ohio, United States)
Dale J Mortensen (Glenn Research Center Cleveland, Ohio, United States)
Marie T Piasecki (Glenn Research Center Cleveland, Ohio, United States)
Joseph A Downey (Glenn Research Center Cleveland, Ohio, United States)
Date Acquired
April 2, 2020
Publication Date
March 1, 2020
Subject Category
Space Communications, Spacecraft Communications, Command and Tracking
Report/Patent Number
Funding Number(s)
WBS: 553323.04.01.01
Distribution Limits
Work of the US Gov. Public Use Permitted.
Technical Review
Single Expert

Available Downloads

NameType 20200002144.pdf STI