Focusing on the physical layer aspects, Digital Satellite Communications assembles key contributions by leading researchers working in the subject area, who are cooperating within the framework of the Network of Excellence on Satellite Communications, SatNEx. The authors provide state-of-the-art coverage on all aspects of the physical layer of a satellite link, including channel propagation, coding, modulation, synchronization and parameter estimation, redistortion and equalization, diversity and combining, multiple access, and software radio. Additionally, a general description of satellite systems and services is provided for organizing the material into a generalized and workable framework. The approach is both analytical and descriptive; the articles have been reviewed and tightly edited to make for a coherent and uniform coverage. Readers also benefit from a review of the necessary theoretical background material to help them through the analytical derivations. Researchers and students in electrical engineering, especially in communications and signal processing will find this a valuable reference work.

This book provides significant knowledge on innovative radio resource management schemes for satellite communication systems that exploit lower layer adaptivity and the knowledge of layer 3 IP QoS support and transport layer behavior. The book integrates competencies considering all the parts of system design: propagation aspects, radio resource management, access protocols, network protocols, transport layer protocols, and more, to cover both broadband and mobile satellite systems.

This useful resource deals with satellite orbits, showing how the wide range of available orbits can be used in communications, positioning, remote-sensing, meteorology, and astronomy. An accompanying CD-ROM determines the orbit and sampling of a satellite.

Consisting of selected technical contributions to the European Project COST252 (Evolution of Satellite Personal Communications from 2nd to Future Generation Systems) this volume provides many innovative results which can be the basis for new global (mobile /terrestrial/satellite) telecommunications systems providing multimedia services at high rates.The latest research results and new perspectives on communications problems are presented in areas such as:- Satellite systems;- Management signalling and resource allocation;- CDMA system and receivers;- Protocols;- Coding;- Satellite-ATM and Satellite-UMTS.The book deals with the satellite components for the third-generation mobile UMTS/IMT-2000 Systems. The satellite component (both geostationary and non-geostationary constellations of satellites) of the future systems offers in particular an effective mean for providing advanced mobile wideband multimedia services to users the world-wide at rates up to 2Mb/s. Satellite Personal Communications for Future-generation Systems will be of particular interest for both researchers and telecommunications professionals.

Doppler Applications in LEO Satellite Communication Systems develops and presents an important class of techniques useful in the construction of little Low Earth Orbit (LEO) satellite communication systems. It centers on the very significant Doppler shift that attends communications through a LEO satellite and shows how this phenomenon can be exploited for an unexpected benefit. The techniques taught in the book are expected to be particularly attractive to system engineers because ground-based transceivers must generally compensate for the large Doppler component and therefore the necessary receiver processing loops are often already in place and expensed. This volume starts with a recounting of the characteristics of a LEO satellite and its orbit. The 2nd chapter addresses the LEO orbital geometry and reviews the Doppler effect attending LEO communications. Chapter three is focused on the important task of estimating the Doppler at a ground terminal. Appropriate signal processing algorithms are reviewed. Chapter four is concerned with predicting LEO satellite visibility. Chapters five and six are, respectively, devoted to the use of the significant LEO Doppler as an aid in a new traffic flow control protocol and as an aid for effecting communications power control. The last chapter describes MATLAB?? based analysis and demonstration CD-Rom software that accompanies the book. The software is, first, a collection of functions useful for calculating satellite orbits, terrestrial contours and regions, and coordinate transformations based on Earth rotation. They are functions that have proven fundamental to the analysis of the traffic flow control protocol described in the book. Second, the software includes a set of user-friendly graphical animation routines that aid in visualization of a LEO orbit, its coverage regions, and the protocol. Doppler Applications in LEO Satellite Communication Systems provides a thorough review of the LEO Doppler phenomenon and, together with included CD-Rom software, provides the know-how and show-how to harvest the benefits of this unexpectedly useful feature.

This book of Proceedings contains papers of the "Third European Workshop on Mobile/Personal Satcoms" (EMPS '98), held in Venice, Italy, November 1998. For the third time, EMPS has given to the experts an opportunity for exchanging opinions and novel ideas in the exciting field of mobile and personal satellite communications. As with the 1996 edition, EMPS '98 issued a formal call for papers, gathering a large number of contributions from many different countries. Each submitted paper has been reviewed by international referees and, finally, selected by the Workshop Steering Committee (WSC). Furthermore, key-topics in the field of mobile/personal satcoms have also been focused on through a few invited papers. As EMPS has been conceived to gather trends and novelties in the field of mobile/personal satcoms, it is tightly matched to the natural evolution of the field itself. In this frame, the reader will notice how the dominant topics are related to system and network issues, while a very little number of contributions have been provided in the propagation and channel related areas. This represents a natural trend of a field, where deep efforts have been paid in the past years to understanding and modelling the physical layer and where the present interest is mostly migrating to the applications. Further changes and novelties may be envisaged in the future of this field. I believe that EMPS will continue to represent an effective opportunity to catch and understand more deeply this evolution.

In this, the first history of artifical satellites and their uses, Helen Gavaghan shows how the idea of putting an object in orbit around the earth changed from science fiction to indespensible technology in the twinkling of an eye. Thanks to satellites, we can now send data and images anywhere in the world in an instant. The satellite-based navigational system can pinpoint your exact location anywhere in the world; it is so precise that, from outer space, it can detect the sag on an airplane's wing. Focusing on three major areas of development - navigational satellites, communications, and weather observation and forecasting - Gavaghan tells the remarkable inside story of how obscure men and women, often laboring under strict secrecy, made the extraordinary scientific and technological discoveries needed to make these miracles happen. Written by a science journalist with support from the Sloane Foundation, the book describes the birth of the modern scientific era in the twentieth century, with creation of satellite technology. The narrative is part history - beginning with the Russian-U.S. contest with the launch of Sputnik; part politics, as scientists and visionary engineers compete for scarce funding that will bring their dreams to reality; partly the story of the singular and fascinating individuals who were present at the creation of our modern technological era.

This book of proceedings contains papers for the Second European Workshop on Mobile/Personal Satcoms (EMPS '96), held in Rome, Italy, and hosted by the Consiglio Nazionale delle Ricerche. The EMPS '96 workshop follows the edition of two years ago, and is intended as an occasion for exchange of information and opinions among experts in the fast-growing field of mobile satellite communications. With respect to the first successful edition we only made one main modification. We issued a formal call for papers, instead oflimiting the selection process to invited papers as was in the past: 60 papers were received from 18 countries. Each paper has been reviewed by at least two referees, and then 41 papers were selected by the Workshop Steering Committee (WSC). An invited introductory lecture opens the workshop and is given by Dr. Andrew J. Viterbi, who is also honorary chairman of EMPS '96. Satellite Personal Communications Networks (SPCNs) are now expected to grow very fast, even beyond the most optimistic forecast: their unique feature to establish ex abrupto a world-wide communication fabric is certainly the winning card. Market analyses now indicate that LEO networks already planned to be operational around 1998 even risk being overwhelmed by users request, so that their extensions are already being considered. And, additionally, multimedia SPCNs are also being introduced at higher frequencies to provide broadband services.

The shift from network-oriented to user-oriented services in the 80s and early 90s has increased the penetration of satellite services into the user community. Parallel to this, worldwide interest has arisen in Personal Communication Services (PCS), where satellites play a crucial role in the provision of PCS all over the world. Satellite Personal Communication Networks (S-PCN) are extremely attractive because they can serve a significant sector of the rapidly growing cellular market. This publication presents market perspectives and technological aspects in relation to satellite mobile and personal communication services. Papers were written by some of the most acclaimed European specialists in PCS. They present basic concepts and the latest research results.

This completely revised and updated edition of the highly successful "UMTS Signaling" provides a deep insight into all aspects of UMTS signalling. The chapter structure has been reworked for improved "usability" for readers, as well as including many new features and updates.

The successful trial, deployment, operation and troubleshooting of 3G or UMTS infrastructures and applications is the biggest challenge facing today's mobile communications. Network element instability, network element and multi-vendor interoperability, configuration and network planning faults are just a few of the challenges affecting performance and profitability that need to be addressed. This book is an invaluable guide to resolving such problems.

Highlights of the Second Edition: Includes new information and scenarios on HSPA / HSDPA / HSUPA, and IMS Covers not only WCDMA, but also TD-SCDMA issues Contains up-to-date information on releases 5 and 6, and includes a new chapter on the future releases 7 and 8 Provides crucial information for network operators and equipment suppliers keen to understand how to handle and analyse UMTS signaling procedures in order to get the network into operation, detect errors and troubleshoot faults Uses first hand, real world information to explain issues which are unclear in the standards Includes comprehensive descriptions and documentation of UMTS reference scenarios for different UMTS procedures

The unified comprehensive approach taken by the authors makes this book essential reading for engineers in network operators, integrators or system suppliers who need to be at the cutting edge of this technology. It will also be an invaluable resource for postgraduateson telecommunications courses, especially those with a focus on signal analysis.

Born half a century ago, predating the internet and named WAVE in its infantry, the Spatial Grasp Model has been tested on numerous applications: graph and network theory, collective robotics, crisis management, security and defense, social systems, and space-based systems. The Spatial Grasp Model confirms the potential applicability of the developed paradigm, language, and technology for solving much broader classes of problems, especially those related to large and unknown worlds. Presenting the main ideas of the Spatial Grasp paradigm and details of its key Spatial Grasp Language (SGL) - including its philosophy, methodology, syntax, semantics, and interpretation in distributed systems - Sapaty explores extended technological applications of the approach. Allowing us to evaluate large, distributed phenomena by their physical or virtual coverage, The Spatial Grasp Model suggests uses beyond the theoretical, including the examination of hurricanes and forest fires. Investigating group behaviour of ocean animals, discovery of unknown terrain features, and path-findings in large transport networks truly demonstrates the real-world application of SGL. Applicable for high-level formulation of key problems and their solutions in the place of natural languages, The Spatial Grasp Model is crucial reading for researchers across multiple fields faced with developing global.

The National Oceanic and Atmospheric Administration (NOAA), with the aid of the National Aeronautics and Space Administration (NASA), is procuring the next generation of geostationary weather satellites. This book assesses progress on program schedule, cost, and functionality; assesses efforts to identify and address issues discovered during integration and testing; and evaluates the likelihood of a gap in satellite coverage and actions to prevent or mitigate such a gap. This book also evaluates NOAA's progress on the Joint Polar Satellite System (JPSS) satellite program with respect to cost, schedule, and mitigation of key risks; identifies the benefits and challenges of alternatives for polar satellite gap mitigation; and assesses NOAA's efforts to establish and implement a comprehensive contingency plan for potential gaps in polar satellite data.

This book offers professionals and students a comprehensive overview of GPS signal acquisitions, measurements, and algorithms for estimation of dynamic programming, quality control, and filtering methods. This book discusses in-depth GPS signal transmissions, transmission procedures and calculation algorithms, using GPS positioning location data for empirical research to elucidate various dimensions of spatial phenomenon which is different from previously published books. This book also focuses on how to conduct empirical research with GPS collected data to contribute discipline theory and concepts in different domains. The book is divided into three parts. Part I introduces debates about measurements of GPS signal structure, including acquisition time, validity based on various tested GPS units, quality control of real-time positioning, data characteristics of probed density, average time, and signal disturbance of message distribution such as noise and inaccuracy positioning. Part II describes applications of GPS positioning data for monitoring analysis, movement analysis, spatial analysis and clustering analysis. Part III presents GPS sources of error and biases by discussing the technology of positioning location for underwater positioning, and clarifying the accuracy of digital maps to positioning systems for vehicle positioning. This book brings together a team of leading experts who perform a creative and empirical research of Global Positioning Systems. The book aims to share all the latest advances in systems, methods and application of GPS positioning with the readers. The topics in this book cover an integrated overview of GPS conceptions, an in-depth realisation of advanced application, and the emerging trends in GPS research.

The Global Positioning System (GPS) is a global navigation satellite system (GNSS) developed by the United States Department of Defense and managed by the United States Air Force 50th Space Wing. It is the only fully functional GNSS in the world, can be used freely by anyone, anywhere, and is often used by civilians for navigation purposes. It uses a constellation of between 24 and 32 medium Earth orbit satellites that transmit precise radio-wave signals, which allow GPS receivers to determine their current location, the time, and their velocity. Since it became fully operational on April 27, 1995, GPS has become a widely used aid to navigation world-wide, and a useful tool for map-making, land surveying, commerce, scientific uses, tracking and surveillance, and hobbies such as geocaching. Also, the precise time reference is used in many applications including the scientific study of earthquakes. This book gathers the latest research from around the globe in this dynamic field.

This book introduces the space community to the novel SpaceFibre protocol, developed under the guidance of the European Space Agency (ESA) as the forthcoming, high speed (Gbps) communication protocol for satellite on-board communication. Since SpaceFibre is expected to follow the success of its predecessor SpaceWire protocol (Mbps), the authors provide a system-level perspective for the end-user willing to adopt this latest technology for future space missions. The authors provide a complete view of the SpaceFibre protocol, together with an analysis of all the necessary hardware and software components to integrate this technology onboard a satellite. The text guides potential system adopters toward understanding the protocol, analyzing strengths, weaknesses and performances. Practical design examples and prototype performance measurements in reference scenarios are also included.

The essential guide to state-of-the art mobile positioning and tracking techniques fully updated for new and emerging trends in the field Mobile Positioning and Tracking, Second Edition explores state-of-the-art mobile positioning solutions applied on top of current wireless communication networks. Application areas covered include positioning, data fusion and filtering, tracking, error mitigation, both conventional and cooperative positioning technologies and systems, and more. The authors fill the gap between positioning and communication systems, showing how features of wireless communications systems can be used for positioning purposes and how the retrieved location information can be used to enhance the performance of wireless networks. Unlike other books on the subject, Mobile Positioning and Tracking: From Conventional to Cooperative Techniques, 2nd Edition covers the entire positioning and tracking value chain, starting from the measurement of positioning signals, and offering valuable insights into the theoretical fundamentals behind these methods and how they relate to application areas such as location-based services, as well as related disciplines and professional concerns, including global business considerations and the changing laws and standards governing wireless communication networks. Fully updated and revised for the latest developments in the field, this Second Edition: * Features new chapters on UWB positioning and tracking, indoor positioning in WLAN, and multi-tag positioning in RFID * Explores an array of positioning and tracking systems based on satellite and terrestrial systems technologies and methods * Introduces advanced and novel topics such as localisation in heterogeneous and cooperative scenarios * Provides a bridge between research and industry with potential implementations of the solutions presented Mobile positioning and tracking is subject to continuous innovations and improvements. This important working resource helps busy industry professionals and practitioners including software and service developers stay on top of emerging trends in the field. It is also a valuable reference for advanced students in related disciplines studying positioning and mobile technologies.

This book presents principal structures of space systems functionality of meteorological networks, media and applications for modern remote sensing, transmission systems, meteorological ground and users segments and transferring weather data from satellite to the ground infrastructures and users. The author presents techniques and different modes of satellite image interpretation, type of satellite imagery, spectral imaging properties, and enhancement of imaging technique, geo-location and calibration, atmospheric and surface phenomena. Several satellite meteorological applications are introduced including common satellite remote sensing applications, weather analysis, warnings and prediction, observation and measurements of meteorological variables, atmosphere and surface applications, ocean and coastal applications, land, agriculture and forestry applications, and maritime and aviation satellite weather applications. The author also covers ground segment and user segment in detail. The final chapter looks to the future, covering possible space integrations in meteorological and weather observation.This is a companion book of Global Satellite Meteorological Observation Theory (Springer), which provides the following topics: Evolution of meteorological observations and history satellite meteorology Space segment with satellite orbits and meteorological payloads Analog and digital transmission, type of modulations and broadcasting systems Atmospheric radiation, satellite meteorological parameters and instruments Meteorological antenna systems and propagation

All the expert guidance you need to understand, build, and operate GPS receivers

The Second Edition of this acclaimed publication enables readers to understand and apply the complex operation principles of global positioning system (GPS) receivers. Although GPS receivers are widely used in everyday life to aid in positioning and navigation, this is the only text that is devoted to complete coverage of their operation principles. The author, one of the foremost authorities in the GPS field, presents the material from a software receiver viewpoint, an approach that helps readers better understand operation and that reflects the forecasted integration of GPS receivers into such everyday devices as cellular telephones. Concentrating on civilian C/A code, the book provides the tools and information needed to understand and exploit all aspects of receiver technology as well as relevant navigation schemes: Overview of GPS basics and the constellation of satellites that comprise the GPS system Detailed examination of GPS signal structure, acquisition, and tracking Step-by-step presentation of the mathematical formulas for calculating a user's position Demonstration of the use of computer programs to run key equations Instructions for developing hardware to collect digitized data for a software GPS receiver Complete chapter demonstrating a GPS receiver following a signal flow to determine a user's position

The Second Edition of this highly acclaimed text has been greatly expanded, including three new chapters: Acquisition of weak signals Tracking of weak signals GPS receiver related subjects

Following the author's expert guidance and easy-to-follow style, engineers and scientists learnall that is needed to understand, build, and operate GPS receivers. The book's logical flow from basic concepts to applications makes it an excellent textbook for upper-level undergraduate and graduate students in electrical engineering, wireless communications, and computer science.

This two-volume set LNICST 280-281 constitutes the post-conference proceedings of the 10th EAI International Conference on Wireless and Satellite Services, WiSATS 2019, held in Harbin, China, in January 2019. The conference was formerly known as the International Conference on Personal Satellite Services (PSATS) mainly covering topics in the satellite domain. The 137 full papers were carefully reviewed and selected from 289 submissions. The papers are organized in topical sections on machine learning for satellite-terrestrial networks, human-machine interactive sensing, monitoring, and communications, integrated space and onboard networks, intelligent signal processing, wireless communications and networks, vehicular communications and networks, intelligent 5G communication and digital image processing technology, security, reliability and resilience in internet of things, advances in communications and computing for internet of things.

Describing the present state of satellite communications, this book discusses the existing and competing international satellite organizations, types of services offered and correct business applications. The author provides a brief history of satellite communications, and then goes on to describe international organizations that provide satellite communications services. There is a detailed explanation of the national satellite systems now in use by 46 countries and an extensive appendix offers specific data to help managers choose an appropriate service.

Discover a modern approach to the analysis, modeling and design of high sensitivity phased arrays. Network theory, numerical methods and computational electromagnetic simulation techniques are uniquely combined to enable full system analysis and design optimization. Beamforming and array signal processing theory are integrated into the treatment from the start. Digital signal processing methods such as polyphase filtering and RFI mitigation are described, along with technologies for real-time hardware implementation. Key concepts from interferometric imaging used in radio telescopes are also considered. A basic development of theory and modeling techniques is accompanied by problem sets that guide readers in developing modeling codes that retain the simplicity of the classical array factor method while incorporating mutual coupling effects and interactions between elements. Combining current research trends with pedagogical material suitable for a first-year graduate course, this is an invaluable resource for students, teachers, researchers, and practicing RF/microwave and antenna design engineers.

Efficient signal processing algorithms are important for embedded and power-limited applications since, by reducing the number of computations, power consumption can be reduced significantly. Similarly, efficient algorithms are also critical to very large scale applications such as video processing and four-dimensional medical imaging. This self-contained guide, the only one of its kind, enables engineers to find the optimum fast algorithm for a specific application. It presents a broad range of computationally-efficient algorithms, describes their structure and implementation, and compares their relative strengths for given problems. All the necessary background mathematics is included and theorems are rigorously proved, so all the information needed to learn and apply the techniques is provided in one convenient guide. With this practical reference, researchers and practitioners in electrical engineering, applied mathematics, and computer science can reduce power dissipation for low-end applications of signal processing, and extend the reach of high-end applications.

This will be the first book that deals with the use of commercial satellite imagery to monitor non-proliferation of nuclear weapons non-intrusively from space by an international organisation. The book deals with both the technical as well as policy issues related to the nuclear weapons non-proliferation issues. The authors discuss how an international organisation such as the International Atomic Energy Agency can use information derived from satellites to enhance its policing task.

This is the first book primarily about the satellite payload of satellite communications systems. It represents a unique combination of practical systems engineering and communications theory. It tells about the satellites in geostationary and low-earth orbits today, both the so-called bent-pipe payloads and the processing payloads. The on-orbit environment, mitigated by the spacecraft bus, is described. The payload units (e.g. antennas and amplifiers), as well as payload-integration elements (e.g. waveguide and switches) are discussed in regard to how they work, what they do to the signal, their technology, environment sensitivity, and specifications. At a higher level are discussions on the payload as an entity: architecture including redundancy; specifications--what they mean, how they relate to unit specifications, and how to verify; and specification-compliance analysis ( budgets ) with uncertainty. Aspects of probability theory handy for calculating and using uncertainty and variation are presented. The highest-level discussions, on the end-to-end communications system, start with a practical introduction to physical-layer communications theory. Atmospheric effects and interference on the communications link are described. A chapter gives an example of optimizing a multibeam payload via probabilistic analysis. Finally, practical tips on system simulation and emulation are provided. The carrier frequencies treated are 1 GHz and above. Familiarity with Fourier analysis will enhance understanding of some topics. References are provided throughout the book for readers who want to dig deeper. Payload systems engineers, payload proposal writers, satellite-communications systems designers and analysts, and satellite customers will find that the book cuts their learning time. Spacecraft-bus systems engineers, payload unit engineers, and spacecraft operators will gain insight into the overall system. Students in systems engineering, microwave engineering, communications theory, probability theory, and communications simulation and modelling will find examples to supplement theoretical texts.

As technology continues to advance, what was once thought novel, even a luxury, quickly becomes commonplace, even a necessity. Global Positioning System (GPS) technology is one such example. Generally, GPS is a satellite-based technology that discloses the location of a given object. This technology is used in automobiles and cell phones to provide individual drivers with directional assistance. Just as individuals are finding increasing applications for GPS technology, state and federal governments are as well. State and federal law enforcement use various forms of GPS technology to obtain evidence in criminal investigations. For example, federal prosecutors have used information from cellular phone service providers that allows real-time tracking of the locations of customers' cellular phones. This book discusses the basics of GPS technology, society's reliance on it, and some of the related legal and privacy implications, with a focus on the legislative and judicial responses on both the federal and state levels.