communication, navigation, and networking reconfigurable testbed (connect): an international space...
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Communication, Navigation, and Networking reConfigurable Testbed
(CoNNeCT): An International Space Station
National Lab
Ann P. OverProject Manager
NASA Glenn Research Center
August 2010
Software Defined Radio: Computer Analogy
Hardware with Fixed Functionality
Hardware + Operating Environment+ “Apps” (“Waveforms”)
3
Digital Electronics(Baseband processor)
Transmitter/Receiver (RF)
Power Amplifier
Power Supply
Software Defined Radio “101”
R e-confi gur abl e
Softwar e
FrequencyC onversion
F ilte ring/S e lection
A G C
A LC
A ntenna
P ower A m p.
LN A
A /DC onverte r
D /AC onverte r
F ilte ring/S e lection
FrequencyC onversion
D em odula tion
U serIn terface
D ecoding
E qua liza tion
M odu la tion E ncod ing
E qua liza tion
Low Noise Amplifier
Why CoNNeCT?
• ISS NATIONAL LAB VALIDATING KEY COMMUNICATIONS, NETWORKING & NAVIGATION TECHNOLOGIES– SDR performance (reliability, space effects)– Reconfigurable on-orbit (e.g. Data rate, signal format, functions)– More capability in Ka-band (26 GHz)– Led by NASA, available to all: government, industry, and academia for in-orbit
experimentation– Announcement of Opportunity for new experiments in early FY11
• SDR STANDARD “STRS” FOR ALL USERS
• DEMONSTRATE FUTURE MISSION CAPABILITIES– High Data rate communications, on-board networking/routing, GPS/nav– Validate performance in-orbit to reduce mission risk
STRS=Space Telecommunications Radio System
CoNNeCT Mission Description
• Launch: JAXA H-II Transfer Vehicle (HTV-3) in 2012 (movie)• Carrier:
– Flight Releasable Attachment Mechanism (FRAM)-based payload– Installed on Expedite the Processing of Experiments to Space Station
(ExPRESS) Logistics Carrier (ELC) at the ISS P3 location– Transferred and installed to the ELC via Extravehicular Robotics (EVR)
• Operate for a minimum of two years.
5
CoNNeCT Operations
7
Flight System Overview
• Flight enclosure mounted on ISS hardware provides mechanical and thermal control
• Flight Computer/Avionics• Communication System
– SW Defined Radios (3)• JPL S-band with GPS• GD S-band• Harris Ka-band
– Antennas (5)/RF• 2 S-band Low gain• 1 L-band GPS• 1 S-band Medium gain• 1 Ka-band High gain with TWTA
– Antenna pointing system• Gimbal• Control computer
Conclusions
• CoNNeCT will demonstrate advanced communications, networking, and navigation capability using software defined radios– Enabling new exploration and discovery
• Broad participation by government, industry, and academia through experiments program
• CoNNeCT helps NASA achieve National Space Policy Goals (released June 28, 2010)
CoNNeCT Contacts
Ann P. Over, Project [email protected] Research Center
Richard Reinhart, Principle [email protected]
Glenn Research Center