Standardized Testing Conditions For Satellite Communications On The Move Sotm Terminals

DOWNLOAD

Download Standardized Testing Conditions For Satellite Communications On The Move Sotm Terminals PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Standardized Testing Conditions For Satellite Communications On The Move Sotm Terminals book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page

Standardized Testing Conditions For Satellite Communications On The Move Sotm Terminals

DOWNLOAD
Author : Mostafa Alazab Elkhouly
language : en
Publisher:
Release Date : 2018

Standardized Testing Conditions For Satellite Communications On The Move Sotm Terminals written by Mostafa Alazab Elkhouly and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.

Von Beginn an haben Satelliten Kommunikationsdienste über große Distanzen bereitgestellt. Endgeräte für die mobile Satellitenkommunikation sind mit einer Nachführeinrichtung ausgestattet, um den verwendeten Satelliten bei Bewegung zu verfolgen. Für höchstmöglichen Datendurchsatz und um Störaussendungen zu benachbarten Satelliten zu vermeiden bedarf es akkurater Nachführalgorithmen. Die Prüfung solcher Satcom-On-The-Move (SOTM) Terminals wird dabei zunehmend wichtig, wie Betreiber von Satellitendiensten anhand des negativen Einflusses suboptimaler Geräte auf ihre Infrastruktur bemerken. Herkömmlich werden SOTM-Terminals im Rahmen von Feldtests mit operativen Satelliten geprüft. Solche Tests sind allerdings nicht exakt wiederholbar. Die Reproduzierbarkeit von Tests ist jedoch insbesondere beim Vergleichstest mehrerer Terminals wichtig. Dieser Beitrag widmet sich der Untersuchung eines umfassenden Qualifikationstests von SOTM-Terminals innerhalb einer Laborumgebung, welche Reproduzierbarkeit ermöglicht. Wesentlicher Vorteil der Laborumgebung ist die Möglichkeit, Terminals unter realitätsnahen Bedingungen zu testen - ohne dass reale Satelliten benötigt werden, was die Kosten reduziert. Diese Arbeit behandelt darüber hinaus die Testmethodik in der Fraunhofer-Testanlage "Facility for Over-the-air Research and Testing (FORTE)". Wichtige Leistungsparameter wie Nachführgenauigkeit (Antenna De-pointing) und Nachbarsatellitenstörung (Adjacent Satellite Interference, ASI) können akkurat gemessen und ausgewertet werden. Die verwendete Methodik zur Gewinnung der vorgeschlagenen Profile wird in der Arbeit ebenso behandelt wie Testergebnisse von Ka-Band-SOTM Terminals. Wesentlicher Beitrag dieser Arbeit ist die Entwicklung von Bewegungs- und Abschattungsprofilen für SOTM-Terminaltests. Bewegungsprofilen für die Landmobile und Maritime Umgebungen wurden entwickelt. Für jede Umgebung, zwei Klassen wurden definiert, Klasse A mit Profile die hohe Bewegungsdynamik haben und Klasse B mit Profile die relativ niedrige Bewegungsdynamik haben. Die vorgeschlagenen Bewegungsprofile wurden in der GVF-105 Standard des Global VSAT Forums berücksichtigt. Die Standardisierung solcher Profile ist notwendig, um einen fairen Leistungsvergleich verschiedener Terminals zu garantieren und solche Geräte sicher zu identifizieren, welche Interferenzen im Satellitennetz verursachen. Dies bedeutet im Ergebnis einen Gewinn für die gesamte Satellitenindustrie.

Beyond The Ionosphere

DOWNLOAD
Author : United States National Aeronautics and
language : en
Publisher: Franklin Classics Trade Press
Release Date : 2018-10-31

Beyond The Ionosphere written by United States National Aeronautics and and has been published by Franklin Classics Trade Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-10-31 with categories.

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Inventive Communication And Computational Technologies

DOWNLOAD
Author : G. Ranganathan
language : en
Publisher: Springer Nature
Release Date : 2022-01-11

Inventive Communication And Computational Technologies written by G. Ranganathan and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-01-11 with Technology & Engineering categories.

This book gathers selected papers presented at the Inventive Communication and Computational Technologies conference (ICICCT 2021), held on 25–26 June 2021 at Gnanamani College of Technology, Tamil Nadu, India. The book covers the topics such as Internet of things, social networks, mobile communications, big data analytics, bio-inspired computing, and cloud computing. The book is exclusively intended for academics and practitioners working to resolve practical issues in this area.

Handbook Of Small Satellites

DOWNLOAD
Author : Joseph N. Pelton
language : en
Publisher: Springer
Release Date : 2020-09-13

Handbook Of Small Satellites written by Joseph N. Pelton and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-09-13 with Science categories.

In the past decade, the field of small satellites has expanded the space industry in a powerful way. Hundreds, indeed thousands, of these innovative and highly cost-efficient satellites are now being launched from Earth to establish low-cost space systems. These smallsats are engaged in experiments and prototype testing, communications services, data relay, internet access, remote sensing, defense and security related services, and more. Some of these systems are quite small and are simple student experiments, while others in commercial constellations are employing state-of-the-art technologies to deliver fast and accurate services. This handbook provides a comprehensive overview of this exciting new field. It covers the technology, applications and services, design and manufacture, launch arrangements, ground systems, and economic and regulatory arrangements surrounding small satellites. The diversity of approach in recent years has allowed for rapid innovation and economic breakthroughs to proceed at a pace that seems only to be speeding up. In this reference work, readers will find information pertaining to all aspects of the small satellite industry, written by a host of international experts in the field.

Starbriefs Plus

DOWNLOAD
Author : Andre Heck
language : en
Publisher: Springer Science & Business Media
Release Date : 2004-03-31

Starbriefs Plus written by Andre Heck and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-03-31 with Science categories.

With about 200,000 entries, StarBriefs Plus represents the most comprehensive and accurately validated collection of abbreviations, acronyms, contractions and symbols within astronomy, related space sciences and other related fields. As such, this invaluable reference source (and its companion volume, StarGuides Plus) should be on the reference shelf of every library, organization or individual with any interest in these areas. Besides astronomy and associated space sciences, related fields such as aeronautics, aeronomy, astronautics, atmospheric sciences, chemistry, communications, computer sciences, data processing, education, electronics, engineering, energetics, environment, geodesy, geophysics, information handling, management, mathematics, meteorology, optics, physics, remote sensing, and so on, are also covered when justified. Terms in common use and/or of general interest have also been included where appropriate.

Global Aeronautical Distress And Safety Systems Gadss

DOWNLOAD
Author : Stojče Dimov Ilčev
language : en
Publisher: Springer Nature
Release Date : 2019-12-10

Global Aeronautical Distress And Safety Systems Gadss written by Stojče Dimov Ilčev and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-12-10 with Technology & Engineering categories.

This book presents the principal structure, networks and applications of the Global Aeronautical Distress and Safety System (GADSS) for enhanced airborne Communication, Navigation and Surveillance (CNS). It shows how their implementation works to ensure better security in flight and on the airports surface; improved aircraft tracking and determination in real space and time; and enhanced distress alerting, safety; and Search and Rescue (SAR) system for missing, hijacked and landed aircraft at sea or on the ground. Main topics of this book are as follows: an overview of radio and satellite systems with retrospective to aeronautical safety; security and distress systems; space segment with all aspects regarding satellite orbits and infrastructures; transmission segment of radio and satellite systems; ground segment of radio and earth ground stations; airborne radio and satellite antenna systems and propagation; aeronautical VHF and HF Radio CNS systems and networks; Inmarsat, Iridium and Cospas-Sasrast aeronautical satellite CNS systems and networks; Aeronautical Global Satellite Augmentation System (GSAS) and networks; Digital Video Broadcasting - Return Channel via Satellite (DVB-RCS) standards and Aeronautical Stratospheric Platform Systems (SPS) and networks.

Global Mobile Satellite Communications

DOWNLOAD
Author : Stojce Dimov Ilcev
language : en
Publisher: Springer Science & Business Media
Release Date : 2005-12-05

Global Mobile Satellite Communications written by Stojce Dimov Ilcev and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005-12-05 with Technology & Engineering categories.

Global mobile satellite communications (GMSC) are specific satellite communication systems for maritime, land and aeronautical applications. It enables connections between moving objects such as ships, vehicles and aircrafts, and telecommunications subscribers through the medium of communications satellites, ground earth stations, PTT or other landline telecommunications providers. Mobile satellite communications and technology have been in use for over two decades. Its initial application is aimed at the maritime market for commercial and distress applications. In recent years, new developments and initiatives have resulted in land and aeronautical applications and the introduction of new satellite constellations in non-geostationary orbits such as Little and Big LEO configurations and hybrid satellite constellations as Ellipso Borealis and Concordia system. This book is important for modern shipping, truck, train and aeronautical societies because GMSC in the present millennium provides more effective business and trade, with emphasis on safety and commercial communications. Global Mobile Satellite Communications is written to make bridges between potential readers and current GMSC trends, mobile system concepts and network architecture using a simple mode of style with understandable technical information, characteristics, graphicons, illustrations and mathematics equations. Global Mobile Satellite Communications represents telecommunications technique and technology, which can be useful for all technical staff on vessels at sea and rivers, on all types of land vehicles, on planes, on off shore constructions and for everyone possessing satellite communications handset phones.

Canasta Basket Rummy

DOWNLOAD
Author : Josefina Artayeta de Viel
language : en
Publisher: Hassell Street Press
Release Date : 2021-09-09

Canasta Basket Rummy written by Josefina Artayeta de Viel and has been published by Hassell Street Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-09-09 with categories.

This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it. This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. To ensure a quality reading experience, this work has been proofread and republished using a format that seamlessly blends the original graphical elements with text in an easy-to-read typeface. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.

Microwave Journal

DOWNLOAD
Author :
language : en
Publisher:
Release Date : 2007

Microwave Journal written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Microwaves categories.

Automotive Antenna Design And Applications

DOWNLOAD
Author : Victor Rabinovich
language : en
Publisher: CRC Press
Release Date : 2017-12-19

Automotive Antenna Design And Applications written by Victor Rabinovich and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-19 with Technology & Engineering categories.

The steady evolution of wireless communication technologies continues to pave the way for the implementation of innovative services and devices in modern vehicles. These include analog and digital audio broadcasting radio, satellite radio, GPS, cell phones, and short range communication devices. Such applications require the use multiple antennas operating in different frequency ranges. Automotive Antenna Design and Applications thoroughly examines traditional and new advanced automotive antennas, including the principles, designs, and techniques used to reduce antenna dimensions without significant degradation of communication quality. The contents of this book are based on cutting-edge data collected from numerous technical papers, patents, and patent applications. It presents an overview of many commercially available automotive antennas and covers features that have become standard in automotive applications, such as printed-on car glass antennas, reduced-size helical antennas, multiband compact, printed-on dielectric and patch designs in a single package. Includes simulation examples of antenna parameters that significantly speed up the design process using software packages such as FEKO, NEC, IE3D, and Genesys Highlighting the practical aspects of antenna design, the authors present passive and active designs and describe the entire design process, including antenna simulation, prototype sample fabrication, and laboratory test measurements. The book also covers the production adjustments that can result from the demands of the real car environment. The presentation of numerous examples of passive and active automotive antennas greatly enhances this reference’s value to professionals, students, and anyone else working in the ever-evolving field of antenna design and application.