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The High Definition Earth Viewing (HDEV) PayloadThe High Definition Earth Viewing (HDEV) payload enables long-term experimentation of four, commercial-of-the-shelf (COTS) high definition video, cameras mounted on the exterior of the International Space Station. The payload enables testing of cameras in the space environment. The HDEV cameras transmit imagery continuously to an encoder that then sends the video signal via Ethernet through the space station for downlink. The encoder, cameras, and other electronics are enclosed in a box pressurized to approximately one atmosphere, containing dry nitrogen, to provide a level of protection to the electronics from the space environment. The encoded video format supports streaming live video of Earth for viewing online. Camera sensor types include charge-coupled device and complementary metal-oxide semiconductor. Received imagery data is analyzed on the ground to evaluate camera sensor performance. Since payload deployment, minimal degradation to imagery quality has been observed. The HDEV payload continues to operate by live streaming and analyzing imagery. Results from the experiment reduce risk in the selection of cameras that could be considered for future use on the International Space Station and other spacecraft. This paper discusses the payload development, end-to- end architecture, experiment operation, resulting image analysis, and future work.
Document ID
20170000416
Document Type
Conference Paper
Authors
Muri, Paul (NASA Johnson Space Center Houston, TX, United States)
Runco, Susan (NASA Johnson Space Center Houston, TX, United States)
Fontanot, Carlos (NASA Johnson Space Center Houston, TX, United States)
Getteau, Chris (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
January 13, 2017
Publication Date
March 4, 2017
Subject Category
Instrumentation and Photography
Report/Patent Number
JSC-CN-38344
Meeting Information
IEEE Aerospace Conference(Big Sky, MT)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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