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Electromagnetic Interference Assessment of CDMA and GSM Wireless Phones to Aircraft Navigation Radios

Author
Salud, M. Theresa
Published
[2002].
Physical Description
1 electronic document
Additional Creators
Ely, Jay J., Koppen, Sandra V., and Nguyen, Truong X.
Online Version

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Unclassified, Unlimited, Publicly available.
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Summary
To address the concern for cellular phone electromagnetic interference (EMI) to aircraft radios, a radiated emission measurement process for CDMA (IS-95) and GSM (ETSI GSM 11.22) wireless handsets was developed. Spurious radiated emissions were efficiently characterized from devices tested in either a semi-anechoic or reverberation chamber, in terms of effective isotropic radiated power. Eight representative handsets (4 GSM, 4 CDMA) were commanded to operate while varying their radio transmitter parameters (power, modulation, etc.). This report provides a detailed description of the measurement process and resulting data, which may subsequently be used by others as a basis of consistent evaluation for cellular/PCS phones, Bluetooth, IEEE802.11b, IEEE802.11a, FRS/GMRS radios, and other portable transmitters. Aircraft interference path loss (IPL) and navigation radio interference threshold data from numerous reference documents, standards, and NASA partnerships were compiled. Using this data, a preliminary risk assessment is provided for CDMA and GSM wireless phone interference to aircraft localizer, Glideslope, VOR, and GPS radio receivers on typical transport airplanes. The report identifies where existing data for device emissions, IPL, and navigation radio interference thresholds needs to be extended for an accurate risk assessment for wireless transmitters in aircraft.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20030014805.
21st Digital Avionics Systems Conference; 27-31 Oct. 2002; Irvine, CA; United States.
Terms of Use and Reproduction
Copyright, Distribution as joint owner in the copyright.
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