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Author: Anupam Dhanuka
Publisher:
ISBN:
Category : Digital communications
Languages : en
Pages : 38
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Book Description
Abstract: "Very High Frequency (VHF) Digital Link Mode 3 is the next step in an effort by the International Civil Aviation Organization (ICAO) to provide a data link between aircraft and ground controllers to support applications such as Air Traffic Control, weather updates and surveillance. It provides an acknowledged connectionless data link over a TDMA based medium access control mechanism. The benefits of such air/ground data subnetworks can be maximized by interconnecting them with other ground subnetworks. To achieve this seamless interconnection a concept called Aeronautical Telecommunication Network (ATN) based on the ISO Open Systems Interconnection (OSI) has been proposed by ICAO. However, in recent years there has been a concern over the need for developing ATN when TCP/IP is already commercially available to achieve all the goals of such an interconnection. In this project VDL Mode 3 simulation models were developed in OPNET (Optmized Network Engineering Tools). Using these models, simulations were conducted to study the performance of the proposed protocols in terms of end to end message transfer delay. A comparison is also done with similar models developed by MITRE Corp and it was observed that models developed herein exhibit better performance. The reasons for this improvement are discussed in this report. Also in this project, it has been shown that TCP/IP can easily be interfaced with VDL Mode 3 and that Mobile IP can satisfactorily be used to handle aircraft mobility. Simulations have been conducted to study the delay experienced in performing Mobile IP management functions followed a TCP connection setup when an aircraft enters a service volume under a ground station's control. The results of these simulations were compared with the results of similar simulations done by MITRE for ATN over VDL Mode 3. Performance of the system using TCP/IP was found to be superior to the reported performance of ATN, the difference largely due to the differences in the underlying VDL Mode 3 models."
Author: Anupam Dhanuka
Publisher:
ISBN:
Category : Digital communications
Languages : en
Pages : 38
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Book Description
Abstract: "Very High Frequency (VHF) Digital Link Mode 3 is the next step in an effort by the International Civil Aviation Organization (ICAO) to provide a data link between aircraft and ground controllers to support applications such as Air Traffic Control, weather updates and surveillance. It provides an acknowledged connectionless data link over a TDMA based medium access control mechanism. The benefits of such air/ground data subnetworks can be maximized by interconnecting them with other ground subnetworks. To achieve this seamless interconnection a concept called Aeronautical Telecommunication Network (ATN) based on the ISO Open Systems Interconnection (OSI) has been proposed by ICAO. However, in recent years there has been a concern over the need for developing ATN when TCP/IP is already commercially available to achieve all the goals of such an interconnection. In this project VDL Mode 3 simulation models were developed in OPNET (Optmized Network Engineering Tools). Using these models, simulations were conducted to study the performance of the proposed protocols in terms of end to end message transfer delay. A comparison is also done with similar models developed by MITRE Corp and it was observed that models developed herein exhibit better performance. The reasons for this improvement are discussed in this report. Also in this project, it has been shown that TCP/IP can easily be interfaced with VDL Mode 3 and that Mobile IP can satisfactorily be used to handle aircraft mobility. Simulations have been conducted to study the delay experienced in performing Mobile IP management functions followed a TCP connection setup when an aircraft enters a service volume under a ground station's control. The results of these simulations were compared with the results of similar simulations done by MITRE for ATN over VDL Mode 3. Performance of the system using TCP/IP was found to be superior to the reported performance of ATN, the difference largely due to the differences in the underlying VDL Mode 3 models."
Author: Vijay K. Madisetti
Publisher: CRC Press
ISBN: 1466565608
Category : Technology & Engineering
Languages : en
Pages : 2394
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Book Description
Now available in a three-volume set, this updated and expanded edition of the bestselling Digital Signal Processing Handbook continues to provide the engineering community with authoritative coverage of the fundamental and specialized aspects of information-bearing signals in digital form. Encompassing essential background material, technical details, standards, and software, The Digital Signal Processing Handbook, Second Edition reflects cutting-edge information on signal processing algorithms and protocols related to speech, audio, multimedia, and video processing technology associated with standards ranging from WiMax to MP3 audio, low-power/high-performance DSPs, color image processing, and chips on video. The three-volume set draws on the experience of leading engineers, researchers, and scholars and includes 29 new chapters that address multimedia and Internet technologies, tomography, radar systems, architecture, standards, and future applications in speech, acoustics, video, radar, and telecommunications. Each volume in the set is also available individually ... Emphasizing theoretical concepts, Digital Signal Processing Fundamentals (Catalog no. 46063) provides comprehensive coverage of the basic foundations of DSP. Coverage includes: Signals and Systems, Signal Representation and Quantization, Fourier Transforms, Digital Filtering, Statistical Signal Processing, Adaptive Filtering, Inverse Problems and Signal Reconstruction, and Time–Frequency and Multirate Signal Processing. Wireless, Networking, Radar, Sensor Array Processing, and Nonlinear Signal Processing (Catalog no. 46047) thoroughly covers the foundations of signal processing related to wireless, radar, space–time coding, and mobile communications together with associated applications to networking, storage, and communications. Video, Speech, and Audio Signal Processing and Associated Standards, (Catalog no. 4608X) details the basic foundations of speech, audio, image, and video processing and associated applications to broadcast, storage, search and retrieval, and communications.
Author: H. Ward Silver
Publisher: John Wiley & Sons
ISBN: 1118054199
Category : Technology & Engineering
Languages : en
Pages : 354
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Book Description
It’s time we cleared the air about ham radio. If you think of it as staticky transmissions sent by people in the middle of nowhere, think again. Today’s ham radio goes beyond wireless to extreme wireless, Operators transmit data and pictures, use the Internet, laser, and microwave transmitters, and travel to places high and low to make contact. In an emergency or natural disaster, ham radio can replace downed traditional communication and save lives. Whether you’re just getting turned on to ham radio or already have your license, Ham Radio for Dummies helps you with the terminology, the technology and the talknology. You discover how to: Decipher the jargon and speak the language Buy or upgrade your equipment, including the all-important antennas Build a ham radio shack, complete with the rig, a computer, mobile/base rig, microphones, keys, headphones, antennas, cables and feedlines Study for your license, master Morse code, take the test and get your call sign Understand the basics of ragchews (conversations), nets (organized on-air meetings) and DX-ing (competing in contacts to make contacts) Keeping logs with the vital statistics, including time (in UTC or World Time), frequency, and call sign Written by Ward Silver, an electrical engineer, Certified Amateur Radio License Examiner, and columnist for QST, a monthly magazine for ham operators, Ham Radio for Dummies gives you the info you need to delve into the science or dive into the conversation. It explains how you can: Tune in to the most common types of signals, including Morse Code (CW), single-sideband (SSB), FM, Radioteletype (RTTY), and data signals Break in, introduce yourself, converse, and say or signal goodbye Communicate while traveling (ham radio goes where mobile phones go dead) Register with an emergency organization such as ARES and RACES Help in emergencies such as earthquakes, wildfires, or severe weather Pursue your special interests, including contacting distant stations, participating in contests, exploring the digital modes, using satellites, transmitting images, and more Complete with a glossary and ten pages of additional suggested resources, Ham Radio for Dummies encourages you to touch that dial and take that mike. CUL. (That’s Morse Code for “see you later.”)
Author: Cary Spitzer
Publisher: CRC Press
ISBN: 1439868980
Category : Technology & Engineering
Languages : en
Pages : 848
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Book Description
A perennial bestseller, the Digital Avionics Handbook offers a comprehensive view of avionics. Complete with case studies of avionics architectures as well as examples of modern systems flying on current military and civil aircraft, this Third Edition includes: Ten brand-new chapters covering new topics and emerging trends Significant restructuring to deliver a more coherent and cohesive story Updates to all existing chapters to reflect the latest software and technologies Featuring discussions of new data bus and display concepts involving retina scanning, speech interaction, and synthetic vision, the Digital Avionics Handbook, Third Edition provides practicing and aspiring electrical, aerospace, avionics, and control systems engineers with a pragmatic look at the present state of the art of avionics.
Author: Ian Wade
Publisher:
ISBN: 9781897649008
Category : Amateur radio stations
Languages : en
Pages : 356
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Book Description
Author: Cary Spitzer
Publisher: CRC Press
ISBN: 1439868611
Category : Technology & Engineering
Languages : en
Pages : 836
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Book Description
A perennial bestseller, the Digital Avionics Handbook offers a comprehensive view of avionics. Complete with case studies of avionics architectures as well as examples of modern systems flying on current military and civil aircraft, this Third Edition includes: Ten brand-new chapters covering new topics and emerging trends Significant restructuring to deliver a more coherent and cohesive story Updates to all existing chapters to reflect the latest software and technologies Featuring discussions of new data bus and display concepts involving retina scanning, speech interaction, and synthetic vision, the Digital Avionics Handbook, Third Edition provides practicing and aspiring electrical, aerospace, avionics, and control systems engineers with a pragmatic look at the present state of the art of avionics.
Author: H. Ward Silver
Publisher: American Radio Relay League
ISBN: 0872599639
Category : Amateur radio operators
Languages : en
Pages : 307
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Book Description
The most popular introduction to amateur radio, this guide offers a unique mix of technology, public service, convenience, and fun. All levels of ham radio operators can brush up on their skills and use the book to study for their first license exam with the latest questions pool with answer key.
Author: Joseph Mitola, III
Publisher: John Wiley & Sons
ISBN: 0471773727
Category : Technology & Engineering
Languages : en
Pages : 488
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Book Description
An exciting new technology, described by the one who inventedit This is the first book dedicated to cognitive radio, a promisingnew technology that is poised to revolutionize thetelecommunications industry with increased wireless flexibility.Cognitive radio technology integrates computational intelligenceinto software-defined radio for embedded intelligent agents thatadapt to RF environments and user needs. Using this technology,users can more fully exploit the radio spectrum and servicesavailable from wireless connectivity. For example, an attempt tosend a 10MB e-mail in a zone where carrier charges are high mightcause a cognitive radio to alert its user and suggest waiting untilgetting to the office to use the LAN instead. Cognitive RadioArchitecture examines an "ideal cognitive radio" that featuresautonomous machine learning, computer vision, and spoken or writtenlanguage perception. The author of this exciting new book is the inventor of thetechnology and a leader in the field. Following his step-by-stepintroduction, readers can start building aware/adaptive radios andthen make steps towards cognitive radio. After an introduction toadaptive, aware, and cognitive radio, the author develops threemajor themes in three sections: Foundations Radio Competence User Domain Competence The book makes the design principles of cognitive radio moreaccessible to students of teleinformatics, as well as to wirelesscommunications systems developers. It therefore embraces thepractice of cognitive radio as well as the theory. In particular,the publication develops a cognitive architecture that integratesdisparate disciplines, including autonomous machine learning,computer vision, and language perception technologies. Anaccompanying CD-ROM contains the Java source code and compiledclass files for applications developed in the book. In addition,for the convenience of the reader, Web resources introducing keyconcepts such as speech applications programmer interfaces (APIs)are included. Although still five to ten years away from full deployment,telecommunications giants and research labs around the world arealready dedicating R&D to this new technology.Telecommunications engineers as well as advanced undergraduate andgraduate students can learn the promising possibilities of thisinnovative technology from the one who invented it. Note: CD-ROM/DVD and other supplementary materials arenot included as part of eBook file.
Author: Bruce A. Fette
Publisher: Academic Press
ISBN: 008092316X
Category : Technology & Engineering
Languages : en
Pages : 849
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Book Description
This book gives a thorough knowledge of cognitive radio concepts, principles, standards, spectrum policy issues and product implementation details. In addition to 16 chapters covering all the basics of cognitive radio, this new edition has eight brand-new chapters covering cognitive radio in multiple antenna systems, policy language and policy engine, spectrum sensing, rendezvous techniques, spectrum consumption models, protocols for adaptation, cognitive networking, and information on the latest standards, making it an indispensable resource for the RF and wireless engineer. The new edition of this cutting edge reference, which gives a thorough knowledge of principles, implementation details, standards, policy issues in one volume, enables the RF and wireless engineer to master and apply today’s cognitive radio technologies. Bruce Fette, PhD, is Chief Scientist in the Communications Networking Division of General Dynamics C4 Systems in Scottsdale, AZ. He worked with the Software Defined Radio (SDR) Forum from its inception, currently performing the role of Technical Chair, and is a panelist for the IEEE Conference on Acoustics Speech and Signal Processing Industrial Technology Track. He currently heads the General Dynamics Signal Processing Center of Excellence in the Communication Networks Division. Dr. Fette has 36 patents and has been awarded the "Distinguished Innovator Award". Foreword and a chapter contribution by Joe Mitola, the creator of the field Discussion of cognitive aids to the user, spectrum owner, network operator Explanation of capabilities such as time – position awareness, speech and language awareness, multi-objective radio and network optimization, and supporting database infrastructure Detailed information on product implementation to aid product developers Thorough descriptions of each cognitive radio component technology provided by leaders of their respective fields, and the latest in high performance analysis – implementation techniques Explanations of the complex architecture and terminology of the current standards activities Discussions of market opportunities created by cognitive radio technology
Author: Wolfgang Hoeg
Publisher: John Wiley & Sons
ISBN: 0470871423
Category : Technology & Engineering
Languages : en
Pages : 362
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Book Description
Now the standardisation work of DAB (Digital Audio Broadcasting)system is finished many broadcast organisations, network providersand receiver manufacturers in European countries and outside ofEurope (for example Canada and the Far East) will be installing DABbroadcast services as pilot projects or public services. Inaddition some value added services (data and video services) areunder development or have already started as pilot projects. The new digital broadcast system DAB distinguishes itself fromexisting conventional broadcast systems, and the various newinternational standards and related documents (from ITU-R, ISO/IEC,ETSI, EBU, EUREKA147, and others) are not readily available and aredifficult to read for users. Therefore it is essential that a wellstructured technical handbook should be available. The Second Edition of Digital Audio Broadcasting has beenfully updated with new sections and chapters added to reflect allthe latest developments and advances. Digital Audio Broadcasting: Provides a fully updated comprehensive overview of DAB Covers international standards, applications and othertechnical issues Combines the expertise of leading researchers in the field ofDAB Now covers such new areas as: IP-Tunneling via DAB; ElectronicProgramme Guide for DAB; and Metadata A comprehensive overview of DAB specifically written forplanning and system engineers, developers for professional anddomestic equipment manufacturers, service providers, as well aspostgraduate students and lecturers in communicationstechnology.
