Wireless phone threat assessment for aircraft communication and navigation radios

Tx, Nguyen; Koppen, Sandra V.; Smit, Liam; Williams, Reuben A.; Salud, Maria Theresa P.

doi:10.1109/isemc.2005.1513488

Cited by 3 publications

(4 citation statements)

References 2 publications

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“…As released by NASA, WLAN equipment provided by the airlines for permanent installation on aircrafts must be rigorously certified, and the emissions of passengers' carry-on wireless products have been measured and estimated for their potential risks to aircraft systems. [4,5] Subsequently, the investigation regarding the electromagnetic environment or effect of the in-flight wireless access system has attracted much attention, and some examples are presented in the following. In [6] a time-domain integral-equation-based field solver has been developed to analyze the electromagnetic effect for electrically large platforms.…”

Section: Introductionmentioning

confidence: 99%

Investigation on electromagnetic environment of radio-over-fiber-based broadband wireless access scheme in aircraft cabin

Zou

Pan

et al. 2015

Journal of Electromagnetic Waves and Applications

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2015):Investigation on electromagnetic environment of radio-over-fiber-based broadband wireless access scheme in aircraft cabin, Journal of Electromagnetic Waves and Applications, Broadband wireless access services inside aircraft cabin are highly desired, but they may bring severe electromagnetic interference (EMI) threats to the avionic system and the flight safety. A radio-over-fiber (ROF)-based distributed scheme is proposed to provide onboard wireless access services. Due to the low emission power of the ROF-based distributed antennas and the electromagnetic radiation-free fiber links, the proposed scheme can effectively reduce the EMI threats from the in-flight wireless access. To evaluate the electromagnetic environment of the ROF-based distributed access scheme, the coupling electric field inside the cabin is calculated by using EMPIRE-XCcel (electromagnetic simulation software). Taking the aircraftAdvanced Regional Jet for the twenty-first century (ARJ21) for example, the results show that inside the cabin, a reduction of 4-8 dB in the coupling electric field strength is achieved using the ROF-based access scheme, compared with that in conventional centralized system. Meanwhile, a higher energy efficiency is ensured as well. Likewise, lower coupling electric field strength can also be provided for other large-size aircrafts of Airbus and Boeing, by using the ROF-based distributed scheme.

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Section: Introductionmentioning

confidence: 99%

Investigation on electromagnetic environment of radio-over-fiber-based broadband wireless access scheme in aircraft cabin

Zou

Pan

et al. 2015

Journal of Electromagnetic Waves and Applications

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“…The IPL value is the attenuation, in dB, between transmitted power at point (1) and the measured power at point (2). For GPS, IPL is defined to be the difference in power between locations (1) and (3).…”

Section: B Measurement Methodsmentioning

confidence: 99%

“…There have been many past studies addressing the three elements. Examples include emissions measurements from wireless devices in aircraft radio bands [1] [2]. Aircraft radio receiver interference thresholds data may be found in [3][4] [5].…”

Section: Introductionmentioning

confidence: 99%

Small Aircraft RF Interference Path Loss

Nguyen

Koppen

Ely

et al. 2007

2007 IEEE International Symposium on Electromagnetic Compatibility

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Abstract-Interference to aircraft radio receivers is an increasing concern as more portable electronic devices are allowed onboard. Interference signals are attenuated as they propagate from inside the cabin to aircraft radio antennas mounted on the outside of the aircraft. The attenuation level is referred to as the interference path loss (IPL) value. Significant published IPL data exists for transport and regional category airplanes. This report fills a void by providing data for small business/corporate and general aviation aircraft.In this effort, IPL measurements are performed on ten small aircraft of different designs and manufacturers. Multiple radio systems are addressed. Along with the typical worst-case coupling values, statistical distributions are also reported that could lead to better interference risk assessment.

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“…The following subsections describe the formulations for calculating MEF. Additional details concerning the topic can be found in [1].…”

Section: Approachmentioning

confidence: 99%

Cumulative Interference to Aircraft Radios from Multiple Portable Electronic Devices

Nguyen

24th Digital Avionics Systems Conference

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Cumulative interference effects from portable electronic devices (PEDs) located inside a passenger cabin are conservatively estimated for aircraft radio receivers. PEDs' emission powers in an aircraft radio frequency band are first scaled according to their locations' interference path loss (IPL) values, and the results are summed to determine the total interference power. The multiple-equipment-factor (MEF) is determined by normalizing the result against the worst case contribution from a single device. Conservative assumptions were made and MEF calculations were performed for Boeing 737's Localizer, Glide-slope, Traffic Collision Avoidance System, and Very High Frequency Communication radio systems where full-aircraft IPL data were available. The results show MEF for the systems to vary between 10 and 14 dB. The same process was also used on the more popular window/door IPL data, and the comparison show the multiple-equipment-factor results came within one decibel (dB) of each other.

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Wireless phone threat assessment for aircraft communication and navigation radios

Cited by 3 publications

References 2 publications

Investigation on electromagnetic environment of radio-over-fiber-based broadband wireless access scheme in aircraft cabin

Investigation on electromagnetic environment of radio-over-fiber-based broadband wireless access scheme in aircraft cabin

Small Aircraft RF Interference Path Loss

Cumulative Interference to Aircraft Radios from Multiple Portable Electronic Devices

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