Download or read book Alternate Communications Spectrum Study for Aviation Data Links written by National Aeronautics and Space Administration and published by . This book was released on 2018-08-27 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the work was to identify the key factors involved in the use of alternate spectrum in various bands for a future integrated CNS data link. The study focused on systems and spectral bands that can deliver VDL-or-higher data rates in a two-way communication setting (including air-ground, ground-air, and air-air modes of operation), with multiple platforms (aircraft) operating in the same local environment. We begin with a review of the initial task list, and the final task list. The final task list contained a focus upon spectral availability and related systems that could be affected by the deployment of a new aviation data link (ADL) system. Most of this addresses the lower few layers of the communications protocol stack. A brief review of current related efforts in the aeronautical community is then provided, in which we describe several systems and programs of interest. Participation in some of these efforts is recommended. We also delineate several of the advantages and disadvantages of these system/efforts, in view of anticipated requirements of a new ADL. Desired attributes of a new ADL system are then discussed, and a connection with existing systems is made. The need to consider a wider set of alternative systems and technologies is described, and the beneficial aspects of a particular transmission technique- spread spectrum-are discussed. We then discuss in more detail several potential spectral regions, in terms of propagation conditions, available technology, spectrum availability, and waveform selection. Some comments on the need for standardization are also provided. We note that none of the existing systems described will likely meet the full range of desired features of a new ADL, but that several systems and spectral regions offer promise in terms of one or more characteristics. A system design and analysis approach is then provided. In this, we again focus on the lower few layers of the protocol stack, and aim to capture the main features ...

Download or read book Alternate Communications Spectrum Study Acss for Aviation Data Links Adl written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-18 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: The aim of the work was to identify the key factors involved in the use of alternate spectrum in various bands for a future integrated CNS data link. The study focused on systems and spectral bands that can deliver VDL-or-higher data rates in a two-way communication setting (including air-ground, ground-air, and air-air modes of operation), with multiple platforms (aircraft) operating in the same local environment. We begin with a review of the initial task list, and the final task list. The final task list contained a focus upon spectral availability and related systems that could be affected by the deployment of a new aviation data link (ADL) system. Most of this addresses the lower few layers of the communications protocol stack. A brief review of current related efforts in the aeronautical community is then provided, in which we describe several systems and programs of interest. Participation in some of these efforts is recommended. We also delineate several of the advantages and disadvantages of these system/efforts, in view of anticipated requirements of a new ADL. Desired attributes of a new ADL system are then discussed, and a connection with existing systems is made. The need to consider a wider set of alternative systems and technologies is described, and the beneficial aspects of a particular transmission technique- spread spectrum-are discussed. We then discuss in more detail several potential spectral regions, in terms of propagation conditions, available technology, spectrum availability, and waveform selection. Some comments on the need for standardization are also provided. We note that none of the existing systems described will likely meet the full range of desired features of a new ADL, but that several systems and spectral regions offer promise in terms of one or more characteristics. A system design and analysis approach is then provided. In this, we again focus on the lower few layers of the protocol stack, and aim to capture the main features

Download or read book The Federal Aviation Administration Plan for Research Engineering and Development written by United States. Federal Aviation Administration and published by . This book was released on 1989 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Air Traffic Control Association Fall Conference Proceedings written by Air Traffic Control Association. Fall Conference and published by . This book was released on 2005 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Domestic Use of Unmanned Aerial Vehicles written by Kristen Boon and published by Oxford University Press, USA. This book was released on 2014 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt: "As a companion piece to Volume 133 of this series, this volume extends our discussion of the use of unmanned aerial vehicles, commonly referred to as drones, by the U.S. government. While the previous volume focused on the use of drone attacks to protect American interests and the American people from threats emanating from abroad, this volume addresses domestic uses of drones"--

Download or read book Aeronautical Air Ground Data Link Communications written by Mohamed Slim Ben Mahmoud and published by John Wiley & Sons. This book was released on 2014-12-01 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book deals with air-ground aeronautical communications. The main goal is to give the reader a survey of the currently deployed, emerging and future communications systems dedicated to digital data communications between the aircraft and the ground, namely the data link. Those communication systems show specific properties relatively to those commonly used for terrestrial communications. In this book, the system architectures are more specifically considered from the access to the application layers as radio and physical functionalities have already been addressed in detail in others books. The first part is an introduction to aeronautical communications, their specific concepts, properties, requirements and terminology. The second part presents the currently used systems for air ground communications in continental and oceanic area. The third part enlightens the reader on the emerging and future communication systems and some leading research projects focused on this scope. Finally, before the conclusion, the fourth part gives several main challenges and research directions currently under investigation.

Download or read book Aviation System Capital Investment Plan written by United States. Federal Aviation Administration and published by . This book was released on 1996 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Signal written by and published by . This book was released on 1993 with total page 824 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Download or read book Real Time Ground Based Flight Data and Cockpit Voice Recorder written by Mustafa M. Matalgah and published by John Wiley & Sons. This book was released on 2023-12-19 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Real-Time Ground-Based Flight Data and Cockpit Voice Recorder Unique text determining the feasibility for implementation and manufacture of ground-based black box systems Real-Time Ground-Based Flight Data and Cockpit Voice Recorder helps familiarize the reader with the nature of issues surrounding existing black box technology integrated on aircrafts and to understand the benefits and importance of proposed real-time ground-based alternative solutions. These are based on predicting aircraft problems while in flight, including understanding the feasibility of using the already existing space and ground-based wireless technologies infrastructures for this purpose. The authors discuss expense reductions in the crash investigation when implementing the new concepts in this book as compared to existing procedures when aircraft accidents occur. The text also opens new research ideas for future investigations. Simulation codes are included to allow for further independent exploration into the covered concepts and ideas. Topics covered in the book include: Satellite Data Transfer Implementation, including basics of the technology, channel data rate, PSTN-based satellite implementation, and expected availability of spectrum Very High Frequency Digital Link (VDL), including modes, sublayers, data transfer, packet and frame structure, and number of channels needed to support a certain number of airplanes Modern Airplane Communication Technologies (including direct air-to-ground communication using 5G) and terahertz band communications; and their integration into aviation communications Black box final architecture and connectivity, including ground and UAV connectivity, and general black box wireless communications challenges For aviation industrial engineers and technical staff, managers, and aerospace and academic researchers, Real-Time Ground-Based Flight Data and Cockpit Voice Recorder is a valuable guide to existing and future technology to successfully predict aircraft problems during flight.

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 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 Aviation System Capital Investment Plan written by DIANE Publishing Company and published by DIANE Publishing. This book was released on 1996-09 with total page 289 pages. Available in PDF, EPUB and Kindle. Book excerpt: The official Fed. Aviation Admin. capital investment plan based on mission needs and future concepts. Covers: service areas (airport, terminal, aircraft and aircrew); communications (voice switches, telecomm satellite); facilities (flight service, power systems sustained support); mission support (aircraft fleet modernization, precision automated tracking system); navigation and landing (direction finder, instrument landing system); surveillance (terminal radar program, precision runway monitor); and weather (weather radar, airport surveillance radar).

Download or read book Optical Communications and a Comparison of Optical Technologies for a High Data Rate Return Link from Mars written by Rodney L. Spence and published by . This book was released on 1993 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: The important principles of direct- and heterodyne-detection optical free-space communications are reviewed. Signal-to-noise-ratio (SNR) and bit-error-rate (BER) expressions are derived for both the direct-detection and heterodyne-detection optical receivers. For the heterodyne system, performance degradation resulting from received-signal and local oscillator-beam misalignment and laser phase noise is analyzed. Determination of interfering background power from local and extended background sources is discussed. The BER performance of direct- and heterodyne-detection optical links in the presence of Rayleigh-distributed random pointing and tracking errors is described. Finally, several optical systems employing Nd:YAG, GaAs, and CO2 laser sources are evaluated and compared to assess their feasibility in providing high-data-rate (10- to 1000-Mbps) Mars-to-Earth communications.

Download or read book The National Aviation System Plan written by United States. Federal Aviation Administration and published by . This book was released on 1970 with total page 846 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wireless Optical Communications written by Olivier Bouchet and published by John Wiley & Sons. This book was released on 2013-02-04 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless optical communication refers to communication based on the unguided propagation of optical waves. The past 30 years have seen significant improvements in this technique – a wireless communication solution for the current millennium – that offers an alternative to radio systems; a technique that could gain attractiveness due to recent concerns regarding the potential effects of radiofrequency waves on human health. The aim of this book is to look at the free space optics that are already used for the exchange of current information; its many benefits, such as incorporating channel properties, propagation models, link budgets, data processing including coding, modulation, standards and concerns around health and safety (IEC 60825 or FCC - Class 1 for example), etc. will become indispensable over the next decade in addressing computer architectures for short-, medium- and long-range telecommunications as we move from gigabytes to terabytes per second. Wireless Optical Communications is an excellent tool for any engineer wanting to learn about wireless optical communications or involved in the implementation of real complete systems. Students will find a wide range of information and useful concepts such as those relating to propagation, optics and photometry, as well the necessary information on safety. Contents 1. Light. 2. History of Optical Telecommunications. 3. The Contemporary and the Everyday Life of Wireless Optical Communication. 4. Propagation Model. 5. Propagation in the Atmosphere. 6. Indoor Optic Link Budget. 7. Immunity, Safety, Energy and Legislation. 8. Optics and Optronics. 9. Data Processing. 10. Data Transmission. 11. Installation and System Engineering. 12. Conclusion.