Download or read book Wireless Phone Threat Assessment and New Wireless Technology Concerns for Aircraft Navigation Radios written by Jay J. Ely and published by . This book was released on 2003 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Portable Wireless LAN Device and Two way Radio Threat Assessment for Aircraft Navigation Radios written by and published by . This book was released on 2003 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wireless Phone Threat Assessment and New Wireless Technology Concerns for Aircraft Navigation Radios written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-15 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: To address the concern for cellular phone electromagnetic interference to aircraft radios, a radiated emission measurement process was developed for two dominant digital standards of wireless handsets. Spurious radiated emissions were efficiently characterized from devices tested in either a semi-anechoic or reverberation chamber, in terms of effective radiated power. Eight representative handsets (four from each digital standard) 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 of other portable transmitters using a variety of wireless transmission protocols. Aircraft interference path loss and navigation radio interference threshold data from numerous reference documents, standards, and NASA partnerships were compiled. Using these data, a preliminary risk assessment is provided for wireless phone interference to aircraft Localizer, Glideslope, Very High Frequency Omni directional Range, and Global Positioning Satellite radio receivers on typical transport airplanes. The report identifies where existing data for device emissions, interference path loss, and navigation radio interference thresholds need to be extended for an accurate risk assessment for wireless transmitters in aircraft. Ely, Jay J. and Nguyen, Truong X. and Koppen, Sandra V. and Beggs, John H. and Salud, Maria Theresa P. Langley Research Center DFTA03-96-X-90001; WU 728-30-10-01

Download or read book Wireless Phone Threat Assessment and New Wireless Technology Concerns for Aircraft Navigation Radios written by Jay J. Ely and published by BiblioGov. This book was released on 2013-08 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: To address the concern for cellular phone electromagnetic interference to aircraft radios, a radiated emission measurement process was developed for two dominant digital standards of wireless handsets. Spurious radiated emissions were efficiently characterized from devices tested in either a semi-anechoic or reverberation chamber, in terms of effective radiated power. Eight representative handsets (four from each digital standard) 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 of other portable transmitters using a variety of wireless transmission protocols. Aircraft interference path loss and navigation radio interference threshold data from numerous reference documents, standards, and NASA partnerships were compiled. Using these data, a preliminary risk assessment is provided for wireless phone interference to aircraft Localizer, Glideslope, Very High Frequency Omni directional Range, and Global Positioning Satellite radio receivers on typical transport airplanes. The report identifies where existing data for device emissions, interference path loss, and navigation radio interference thresholds need to be extended for an accurate risk assessment for wireless transmitters in aircraft.

Download or read book 21st Digital Avionics Systems Conference 2002 written by and published by . This book was released on 2002 with total page 1100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book 23rd DASC written by and published by . This book was released on 2004 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Symposium Record written by and published by . This book was released on 2004 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Risk and Uncertainty Assessment for Natural Hazards written by Jonathan Rougier and published by Cambridge University Press. This book was released on 2013-02-21 with total page 587 pages. Available in PDF, EPUB and Kindle. Book excerpt: A state-of-the-art overview of natural hazard risk assessment, for researchers and professionals in natural-hazard science, risk management and environmental science.

Download or read book Department of Transportation and Related Agencies Appropriations for 2003 2003 budget justifications written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and published by . This book was released on 2002 with total page 1814 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Departments of Transportation and Treasury and Independent Agencies Appropriations for 2005 Department of Transportation FY05 budget justifications written by United States. Congress. House. Committee on Appropriations. Subcommittee on the Departments of Transportation and Treasury, and Independent Agencies Appropriations and published by . This book was released on 2004 with total page 1998 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Departments of Transportation and Treasury and Independent Agencies Appropriations for 2005 written by United States. Congress. House. Committee on Appropriations. Subcommittee on the Departments of Transportation and Treasury, and Independent Agencies Appropriations and published by . This book was released on 2004 with total page 1904 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distributed to some depository libraries in microfiche.

Download or read book Department of Transportation and Related Agencies Appropriations for 2003 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Dept. of Transportation and Related Agencies Appropriations and published by . This book was released on 2002 with total page 2004 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Department of Transportation and Related Agencies Appropriations for 2003 written by United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations and published by . This book was released on 2002 with total page 2866 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Departments of Transportation and Treasury and Independent Agencies Appropriations for 2004 Department of Transportaion FY04 budget justifications written by United States. Congress. House. Committee on Appropriations. Subcommittee on the Departments of Transportation and Treasury, and Independent Agencies Appropriations and published by . This book was released on 2003 with total page 1900 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Departments of Transportation and Treasury and Independent Agencies Appropriations for 2004 written by United States. Congress. House. Committee on Appropriations. Subcommittee on the Departments of Transportation and Treasury, and Independent Agencies Appropriations and published by . This book was released on 2003 with total page 1124 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Analysis of Regulatory Frameworks for Wireless Communications Societal Concerns and Risk written by Haim Mazar and published by Universal-Publishers. This book was released on 2009 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis analyses how and why culture and geography influence the allocation and licensing of the radio frequency (RF) spectrum in different nations. Based on a broad comparative study of 235 countries, an inter-disciplinary approach is used to explore regulatory frameworks and attitudes toward risk. In addition, detailed case studies of the UK, France, the US and Ecuador provide deeper insights into the main contrasting regulatory styles. Three alternative sociological theories are used to analyse and explain the results for both the in-depth and broad brush studies. The Cultural Theory of Mary Douglas and co-workers is first used to categorise countries in terms of perceptual filters. The empirical findings indicate some countries to be apparently exceptional in their behaviour. The theory of Bounded Rationality is used to investigate and explain these apparent irrationalities. Finally, Rational Field Theory shows how beliefs and values guide administrations in their RF regulation. A number of key factors are found to dominate and patterns emerge. The European RF harmonisation is unique. Following European unification, wireless regulation is divided into two major camps (the EU and the US), which differ in their risk concerns, approach to top-down mandated standards, allocation of RF spectrum to licence-exempt bands and type approval process. The adoption of 3G cellular (UMTS versus CDMA2000) and digital TV standards (DVB-T/ATSC/ISDB-T) around the world reflects geopolitical and colonial influence. The language of a country is a significant indicator of its analogue TV standard (SECAM/PAL/NTSC). Interestingly, the longitude of a country to a fair extent defines RF allocation: Africa and West Asia follow Europe, whereas the Americas approximate the US. RF regulation and risk tolerability differ between tropical and non-tropical climates. The collectivised/centralised versus the individualised/market-based rationalities result in different regulatory frameworks and contrasting societal and risk concerns. The success of the top-down European GSM and the bottom-up Wi-Fi standards reveal how the central-planning and market-based approaches have thrived. Attitudes to RF human hazards and spurious emissions levels reveal that the US, Canada and Japan are more tolerant of these radiation risks than Europe. Australia, Canada, New Zealand, UK and USA encourage technological innovation. A practical benefit of this study is that it will give regulators more freedom to choose a rational RF licensing protocol, by better understanding the possibly self-imposed boundaries of cultural and geographical factors which are currently shaping allocation. Academically, there is utility in undertaking a cultural and geographic analysis of a topic that is mostly the domain of engineering, economic and legal analysts.

Download or read book Departments of Transportation and Treasury and Independent Agencies Appropriations for 2004 written by United States. Congress. House. Committee on Appropriations. Subcommittee on the Departments of Transportation and Treasury, and Independent Agencies Appropriations and published by . This book was released on 2003 with total page 1904 pages. Available in PDF, EPUB and Kindle. Book excerpt: