This second edition of Satellite Communications is a revised, updated, and improved version of the first edition (Van Nostrand, 1984) and has been extended to include many newer topics that are rapidly becoming important in modem and next-generation satellite systems. The first half of the book again covers the basics of satellite links, but has been updated to include additional areas such as Global Positioning and deep space satellites, dual polarization, multiple beaming, advanced satellite electronics, frequency synthesizers, and digital frequency generators. The second half of the book is all new, covering frequency and beam hopping, on-board processing, EHF and optical cross­ links, and mobile satellites and VSAT systems. All of these latter topics figure to be important aspects of satellite systems and space platforms of the twenty-first century. As in the first edition, the objective of the new edition is to present a unified approach to satellite communications, helping the reader to become familiar with the terminology, models, analysis procedures, and evolving design directions for modem and future satellites. The presentation stresses overall system analysis and block diagram design, as opposed to complicated mathematical or physics descriptions. (Backup mathematics is relegated to the appendices where a reader can digest the detail at his own pace. ) The discussion begins with the simplest satellite systems and builds to the more complex payloads presently being used.

This book describes the basic concepts of spacecraft operations for both manned and unmanned missions. The first part of the book provides a brief overview of the space segment. The next four parts deal with the classic areas of space flight operations: mission operations, communications and infrastructure, the flight dynamics system, and the mission planning system. This is followed by a part describing the operational tasks of the various subsystems of a classical satellite in Earth orbit. The last part describes the special requirements of other mission types due to the presence of astronauts, the approach of a satellite to another target satellite, or leaving Earth orbit in interplanetary missions and landing on other planets and moons.

This book provides an intuitive and accessible introduction to the fundamentals of wireless communications and their tremendous impact on nearly every aspect of our lives. The author starts with basic information on physics and mathematics and then expands on it, helping readers understand fundamental concepts of RF systems and how they are designed. Covering diverse topics in wireless communication systems, including cellular and personal devices, satellite and space communication networks, telecommunication regulation, standardization and safety, the book combines theory and practice using problems from industry, and includes examples of day-to-day work in the field. It is divided into two parts – basic (fundamentals) and advanced (elected topics). Drawing on the author’s extensive training and industry experience in standards, public safety and regulations, the book includes information on what checks and balances are used by wireless engineers around the globe and address questionsconcerning safety, reliability and long-term operation. A full suite of classroom information is included.

This book presents select proceedings of the International Conference on Micro and Nanoelectronics Devices, Circuits and Systems (MNDCS-2022). The book includes cutting-edge research papers in the emerging fields of micro and nanoelectronics devices, circuits, and systems from experts working in these fields over the last decade. The book is a unique collection of chapters from different areas with a common theme and is immensely useful to academic researchers and practitioners in the industry who work in this field.

Digitale Identitäten sind der Schlüssel zur digitalen Souveränität – für Personen, Unternehmen und den öffentlichen Sektor. Dieser Sammelband bündelt die zentralen Erkenntnisse des Forschungsprogramms „Sichere Digitale Identitäten“ und bietet eine fundierte Basis für ein skalierbares, zukunftssicheres Identitätsmanagement.

Dieses Buch behandelt die Missionsplanung autonomer Drohnenschwärme als verteiltes System. Sie wird als vielseitiges Werkzeug verstanden, das beschreibende, gestaltende und anwendungsorientierte Aspekte umfasst. Die Weiterentwicklung des UAV-Sektors erfordert interdisziplinäre Ansätze, um Herausforderungen zu bewältigen und neue Anwendungsfelder zu erschließen. Ein umfassendes Verständnis von UAV-Systemen ist essenziell, um deren Entwicklung und Einsatz effizient zu gestalten. Technische Systemaspekte, konzeptionelle Flugplanungen sowie sicherheitsrelevante Interaktionen während der Mission werden berücksichtigt. Ein Fokus liegt auf der Analyse der Interaktion zwischen Maschine und Fernpilot. Diese Erkenntnisse fließen in die Entwicklung einer Prozessarchitektur ein, die Konzepte und Vorschläge bietet. Iterative Prozesse optimieren das kooperative Fliegen und die Flugstabilität der Drohnen. Das Ergebnis ist ein fliegendes Sensornetzwerk mit vielseitigen Anwendungen.

Was in der Welt gelten oder als Tatbestand verbürgt sein soll, muss aktenkundig sein, denn die Behörden der ›verwalteten Welt‹ entscheiden über unsere Wirklichkeit, Identität und Handlungsmacht im ›Medium‹ der Akten. Diese stiften also zuletzt Zusammenhänge zwischen Amt und Welt, zunächst aber zwischen unterschiedlichsten Schriftstücken – egal, ob in Gestalt von Kästchen und Kisten, von Bündeln, Kladden oder Ordnern, zunehmend in Form von verschalteten Datensätzen und elektronischen Verweissystemen. Akten lassen sich deshalb als Medien verstehen, die unterschiedliche Formen der Inskription miteinander verbinden. Acta sind Arbeitsmittel, Handlungen und zugleich Medien der (Auto-)Protokollierung eines administrativen Vorgangs, in welcher Doppelfunktion sie die Rechenschaftspflicht der Verwaltungen ebenso zu erfüllen helfen, wie sie eine historiographische Dokumentation ihres Tuns ermöglichen. Als Aufschreibesystem mit spezifischem Prozesscharakter, das unablässige Rekursion mit weitreichenden Handlungsketten verbindet, waren Akten seit ihrem Aufkommen in der Frühneuzeit eine medientechnische Innovation – und sind es noch heute, im Zeitalter ihrer ›Digitalisierung‹. Dabei sind diese keineswegs nur Sache der Verwaltung: Die Geschichten der Akte/n in diesem )Band der AdminiStudies handeln auch von einer Mediengeschichte der Migration der ›Aktenmäßigkeit‹ in pädagogische oder medizinische, politische, militärische oder wirtschaftliche Organisationen sowie technische Bereiche und künstlerisch-literarische Domänen.

This is an book. This professional volume provides scientific background and practical guidance on forest management in light of ecological connectivity. Readers will gain a great understanding of shifting species in response to climate change and the resulting loss of various resources. The main drivers of these variations are the quality of the availability, quantity, and quality of habitats in the landscape, the genetic diversity of species populations, and the ability to navigate through a fragmented landscape matrix. The connectivity of habitats is gaining importance in the combat of both, the biodiversity crisis and the climate change crisis.

This book constitutes refereed proceedings of the 8th Conference on Information and Communication Technologies of Ecuador, TICEC 2020, held in November 2020. Due to the COVID-19 pandemic the conference was held online.
The 36 full and 7 short papers were carefully reviewed and selected from 117 qualified submissions. The papers are organized according to the following topical sections: biomedical sensors and wearables systems; data science; ICT´s applications; industry 4.0; smart cities; software development; technology and environment.

This book reports on innovative research and developments in automation. Spanning a wide range of disciplines, including communication engineering, power engineering, control engineering, instrumentation, signal processing and cybersecurity, it focuses on methods and findings aimed at improving the control and monitoring of industrial and manufacturing processes as well as safety.

This book of the conference proceedings focuses on innovative design, technology and methods in the fields of building, civil engineering and smart city. It contains a large number of detailed design, construction and performance analysis charts, benefited to students, teachers, research scholars and other professionals in related fields. As well, readers will encounter new ideas for realizing more safe, intelligent and economical buildings.

"Information Theory and Language" is a collection of 12 articles that appeared recently in Entropy as part of a Special Issue of the same title. These contributions represent state-of-the-art interdisciplinary research at the interface of information theory and language studies.

This book gathers outstanding papers presented at the International Conference on Data Science and Applications (ICDSA 2021), organized by Soft Computing Research Society (SCRS) and Jadavpur University, Kolkata, India, from April 10 to 11, 2021. It covers theoretical and empirical developments in various areas of big data analytics, big data technologies, decision tree learning, wireless communication, wireless sensor networking, bioinformatics and systems, artificial neural networks, deep learning, genetic algorithms, data mining, fuzzy logic, optimization algorithms, image processing, computational intelligence in civil engineering, and creative computing.

This book presents the proceedings of 24th International Conference Series on Climbing and Walking Robots. CLAWAR 2021 is the twenty-fourth edition of International Conference series on Climbing and Walking Robots and the Support Technologies for Mobile Machines. The conference is organized by CLAWAR Association in collaboration with Kwansei Gakuin University on a virtual platform in Takarazuka, Japan, during 30 August–01 September 2021.
CLAWAR 2021 brings new developments and new research findings in robotics technologies within the framework of “Robotics for Sustainable Future”. The topics covered include biped locomotion, human–machine/human–robot interaction, innovative actuators, power supplies and design of CLAWAR, inspection, legged locomotion, modelling and simulation of CLAWAR, outdoor and field robotics, planning and control, and wearable devices and assistive robotics.