Download or read book Global Positioning System written by David W. Thomin (CAPT, USAF.) and published by . This book was released on 1984 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Global Positioning System A Modification to the Baseline Satellite Constellation for Improved Geometric Performance written by D. W. Thomin and published by . This book was released on 1984 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: This investigation determined the effect of changes in eccentricity to the orbits of the proposed Global Positioning System (GPS) 18-satellite baseline constellation by analyzing the geometric performance obtained. The effect of satellite losses upon global coverage as also examined with an emphasis on determining which combination of remaining satellites provided the best and worst cases. The potential of GPS for navigation of the space-based user was explored by analyzing the geometric performance obtained for a variety of user trajectories and GPS antenna beamwidths. A computer program which analyzes the many aspects of the geometric performance of pseudoranging navigation satellite systems was used. The results of this analysis indicate that a simple modification to the baseline constellation could reduce outages on a global basis by nearly 50%. The modification consists of changing the shape of the GPS circular satellite orbits to slightly elliptical ones, resulting in more favorable satellite geometry and fewer outages to the user on a global average. Degradation of coverage due to satellite losses was found to be largely dependent on the combination of the remaining satellites which suggests that rephasing of the remaining satellites could significantly improve the degraded performance. The potential for conventional use of GPS for navigation in space was shown to exist for the low altitude user but will be very limited for the higher altitude user due to present GPS antenna design.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1985 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Global Positioning System written by and published by DIANE Publishing Inc.. This book was released on 2006 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Global Positioning System written by National Research Council and published by National Academies Press. This book was released on 1995-07-01 with total page 285 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Positioning System (GPS) is a satellite-based navigation system that was originally designed for the U.S. military. However, the number of civilian GPS users now exceeds the military users, and many commercial markets have emerged. This book identifies technical improvements that would enhance military, civilian, and commercial use of the GPS. Several technical improvements are recommended that could be made to enhance the overall system performance.

Download or read book Status of the NAVSTAR Global Positioning System written by United States. General Accounting Office and published by . This book was released on 1978 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transportation Weekly Government Abstracts written by and published by . This book was released on 1985 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Global Navigation Satellite Systems written by National Academy of Engineering and published by National Academies Press. This book was released on 2012-04-27 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Positioning System (GPS) has revolutionized the measurement of position, velocity, and time. It has rapidly evolved into a worldwide utility with more than a billion receiver sets currently in use that provide enormous benefits to humanity: improved safety of life, increased productivity, and wide-spread convenience. Global Navigation Satellite Systems summarizes the joint workshop on Global Navigation Satellite Systems held jointly by the U.S. National Academy of Engineering and the Chinese Academy of Engineering on May 24-25, 2011 at Hongqiao Guest Hotel in Shanghai, China. "We have one world, and only one set of global resources. It is important to work together on satellite navigation. Competing and cooperation is like Yin and Yang. They need to be balanced," stated Dr. Charles M. Vest, President of the National Academy of Engineering, in the workshop's opening remarks. Global Navigation Satellite Systems covers the objectives of the workshop, which explore issues of enhanced interoperability and interchangeability for all civil users aimed to consider collaborative efforts for countering the global threat of inadvertent or illegal interference to GNSS signals, promotes new applications for GNSS, emphasizing productivity, safety, and environmental protection. The workshop featured presentations chosen based on the following criteria: they must have relevant engineering/technical content or usefulness; be of mutual interest; offer the opportunity for enhancing GNSS availability, accuracy, integrity, and/or continuity; and offer the possibility of recommendations for further actions and discussions. Global Navigation Satellite Systems is an essential report for engineers, workshop attendees, policy makers, educators, and relevant government agencies.

Download or read book Positioning with GPS 1985 written by and published by . This book was released on 1985 with total page 524 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Global Positioning System An Overview written by Yehuda Bock and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Space geodesy has evolved in the last twenty years into one of the most exciting disciplines in the earth sciences. This development is due to a large extent to the versatility of applications provided by the radio interferometric technique called Global Positioning System or GPS. Appropriately, Symposium 102: Global Positioning System: An Overview was held at the 125th Anniversary Meeting of the International Association of Geodesy in August, 1989. A broad review of GPS geodesy, achievements to date and the prospects for future study and application was presented. Papers included in this volume are grouped as follows: - Static and Geodynamic Positioning; - Orbit Determination Optimization and Design Dynamic; - Kinematic GPS/INS Radio Tracking Systems A useful reference for any researcher or student of space geodesy.

Download or read book Global Positioning System written by Pratap Misra and published by Ingram. This book was released on 2006 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: The second edition of this widely praised book offers a comprehensive introduction to GPS: the system, signals, receivers, measurements, and algorithms for estimation of position, velocity, and time. It is intended as a textbook for a senior- or graduate-level engineering course and a self-study guide for practicing engineers.The book is divided into four parts. Part I introduces the basic framework for a global navigation satellite system, including coordinate frames, time references, and satellite orbits, and provides an overview of GPS, GLONASS, and Galileo. Part II describes the fruits of GPS: estimation of position, velocity, and time. Part III discusses the ingenious structure of the GPS signals. Part IV introduces the signal processing steps required to extract the necessary measurements from these signals, and explores the challenges posed by signal blockage and RFI.

Download or read book Geometric Performance of Global Positioning System written by Katsuo Yonezawa and published by . This book was released on 1975 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Understanding GPS GNSS Principles and Applications Third Edition written by Elliott D. Kaplan and published by Artech House. This book was released on 2017-05-31 with total page 1017 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thoroughly updated third edition of an Artech House bestseller brings together a team of leading experts providing a current and comprehensive treatment of global navigation satellite systems (GNSS) that readers won’t find in other resources. Packed with brand new material, this third edition includes new chapters on the system engineering details of GPS, European Galileo system, Chinese Beidou systems, GLONASS, and regional systems, such as Quasi–Zenith Satellite System (QZSS) and Navigation with Indian Constellation (NavIC). Readers also find new coverage of GNSS receivers, disruptions, errors, stand-alone GNSS performance, differential and precise point positioning. This single-source reference provides both a quick overview of GNSS essentials and an in-depth treatment of advanced topics and explores all the latest advances in technology, applications, and systems. Readers are guided in the development of new applications and on how to evaluate their performance. It explains all the differential GNSS services available to help decide which is best for a particular application. The book discusses the integration of GNSS with other sensors and network assistance. Readers learn how to build GNSS receivers and integrate them into navigational and communications equipment. Moreover, this unique volume helps determine how technology is affecting the marketplace and where best to invest in a company’s resources.

Download or read book Progress In Astronautics and Aeronautics written by Bradford W. Parkinson and published by AIAA. This book was released on 1996 with total page 688 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Interoperable Global Navigation Satellite Systems Space Service Volume written by United Nations Publications and published by . This book was released on 2019-09-19 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: The availability and performance of global navigation satellite systems (GNSS) signals at high altitude is documented as the GNSS Space Service Volume (SSV). While different definitions of the SSV exist and may continue to exist for the different service providers, within the context of this booklet it is defined as the region of space between 3,000 km and 36,000 km above the Earth's surface, which is the geostationary altitude. For space users located at low altitudes (below 3,000 km), the GNSS signal reception is similar to that for terrestrial users and can be conservatively derived from the results presented for the lower SSV in this booklet.

Download or read book Global Positioning System written by Yehuda Bock and published by . This book was released on 1990 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Global Positioning System written by B. Hofmann-Wellenhof and published by Springer Science & Business Media. This book was released on 1994 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book shows in comprehensive manner how the Global Positioning System (GPS) works. The use of GPS for precise measurements (i.e., surveying) is treated as well as navigation and attitude determination.The basic mathematical models for various modes of GPS operations and detailed explanation of the practical use of GPS are developed precisely in this book. Additionally, the text shows why and how the kinematic mode differs from the static mode and exemplifies types of projects where different measurement modes are used.Explanations of proper project planning, execution, data reduction, and coordinate computation are provided for novice GPS users.