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In-Flight Characterization of the Electromagnetic Environment Inside an AirlinerIn 1995, the NASA Langley Research Center conducted a series of experimental measurements that characterized the electromagnetic environment (EME) inside a Boeing 757 airliner while in flight, Measurements were made of the electromagnetic energy coupled into a commercially configured aircraft as it was flown in close proximity to ground-based radio frequency (RF) transmitters operating at approximately 26, 173. and 430 MHz. The goal of this experiment was to collect data for the verification of analytical predictions of the internal aircraft response to an external stimulus. This paper describes the experiment, presents the data collected by it, and discusses techniques used to compute both the magnitude of the electric field illuminating the aircraft and its direction of propagation relative to a coordinate system fixed to the aircraft. The latter is determined from Global Positioning System (GPS) and aircraft Inertial Reference Unit (IRU) data. The paper concludes with an examination of the shielding effectiveness of the test aircraft. as determined by comparison of' the measured internal EME and computed external EME.
Document ID
20010045828
Acquisition Source
Langley Research Center
Document Type
Technical Publication (TP)
Authors
Moeller, Karl J. (NASA Langley Research Center Hampton, VA United States)
Dudley, Kenneth L. (NASA Langley Research Center Hampton, VA United States)
Quach, Cuong C. (NASA Langley Research Center Hampton, VA United States)
Koppen, Sandra V. (Lockheed Martin Engineering and Sciences Co. Hampton, VA United States)
Date Acquired
September 7, 2013
Publication Date
March 1, 2001
Subject Category
Computer Systems
Report/Patent Number
NASA/TP-2001-210831
NAS 1.60:210831
L-18041
Funding Number(s)
PROJECT: RTOP 522-14-21-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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