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Evaluation of the NASA Space Shuttle Endeavour Using Ultra-Wideband Measurement System by Dr. Robert Johnk, NIST Wednesday December 13th, 2006 Location: We will meet at the normal location (Room L107 of College Hilltop Library, 3645 W. 112th Ave., Westminster, CO) at 6:30PM for the pizza social and 7:00PM for the meeting. Abstract: This talk summarizes a joint NIST-NASA
measurement effort to evaluate the electromagnetic penetration of the
shuttle Endeavour.
NASA is concerned about the effects that microwave imaging radar systems
might have on critical avionics systems in its fleet of space shuttles.
As part of a multifaceted effort, a portable, NIST-developed
ultra-wideband measurement system was deployed at the Kennedy Space Center
to evaluate electromagnetic penetration in over the frequency range of 30
MHZ – 6 GHz at selected locations inside Endeavour.
The measurements were carried out inside a large metal hangar,
which exhibited robust reverberant behavior. A combination of reverb
chamber techniques and time/frequency signal processing permitted the
evaluation of electromagnetic penetration at six different locations
inside the orbiter. |