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 Geometric performance of the global positioning system written by A. H. Bogen and published by . This book was released on 1974 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 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 Global Positioning System written by Bradford W. Parkinson and published by AIAA. This book was released on 1996 with total page 830 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 2012-12-06 with total page 355 pages. Available in PDF, EPUB and Kindle. Book excerpt: This new edition adds the most recent advances in GPS technology, although the overall structure essentially conforms to the former editions. The textbook explains in a comprehensive manner the concepts of GPS as well as the latest applications in surveying and navigation. Description of project planning, observation, and data processing is provided for novice GPS users. Special emphasis is placed on the modernization of GPS, covering the new signal structure and improvements in the space and control segment. Furthermore, the augmentation of GPS by satellite-based and ground-based systems leading to future Global Navigation Satellite Systems (GNSS) is discussed.
Download or read book Global Positioning System Theory and Design written by Alyson Kelly Choy and published by . This book was released on 1996 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Geometric Performance of Pseudoranging Navigation Satellite Systems written by Jeannine V. Lamar and published by . This book was released on 1977 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Describes a computer program designed to analyze many aspects of the geometric performance of pseudoranging navigation satellite (navsat) systems for users either on earth or in earth orbit. A navsat system includes a fleet of satellites, each with an accurate clock that transmits ephemeris, time, and other signals. These signal can be received by relatively small, inexpensive equipment, thus enabling the user to compute his position and time accurately. The NAVSTAR/Global Positioning System (GPS) is such a system, and its overall user accuracy can be broken down into two components which, when multiplied together, yield an estimate of the user's position and/or time accuracy. These two components are analyzed in this report; the first depends on the relative geometry among the navsats being employed and the user's location, and the second involves a determination of system errors.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Download or read book The Global Positioning System written by National Research Council and published by National Academies Press. This book was released on 1995-05-31 with total page 284 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 Geometric Performance of Pseudoranging Navigation Satellite Systems written by Jeannine V. Lamar and published by . This book was released on 1977 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Global Positioning Systems Inertial Navigation and Integration written by Mohinder S. Grewal and published by John Wiley & Sons. This book was released on 2004-04-05 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only comprehensive guide to Kalman filtering and its applications to real-world GPS/INS problems Written by recognized authorities in the field, this book provides engineers, computer scientists, and others with a working familiarity with the theory and contemporary applications of Global Positioning Systems (GPS), Inertial Navigational Systems, and Kalman filters. Throughout, the focus is on solving real-world problems, with an emphasis on the effective use of state-of-the-art integration techniques for those systems, especially the application of Kalman filtering. To that end, the authors explore the various subtleties, common failures, and inherent limitations of the theory as it applies to real-world situations, and provide numerous detailed application examples and practice problems, including GPS-aided INS, modeling of gyros and accelerometers, and WAAS and LAAS. Drawing upon their many years of experience with GPS, INS, and the Kalman filter, the authors present numerous design and implementation techniques not found in other professional references, including original techniques for: * Representing the problem in a mathematical model * Analyzing the performance of the GPS sensor as a function of model parameters * Implementing the mechanization equations in numerically stable algorithms * Assessing computation requirements * Testing the validity of results * Monitoring GPS, INS, and Kalman filter performance in operation In order to enhance comprehension of the subjects covered, the authors have included software in MATLAB, demonstrating the workings of the GPS, INS, and filter algorithms. In addition to showing the Kalman filter in action, the software also demonstrates various practical aspects of finite word length arithmetic and the need for alternative algorithms to preserve result accuracy.
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 Global Positioning System written by Bernhard Hofmann-Wellenhof and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is dedicated to Dr. Benjamin William Remondi for many reasons. The project of writing a Global Positioning System (GPS) book was con ceived in April 1988 at a GPS meeting in Darmstadt. Dr. Remondi discussed with me the need for an additional GPS textbook and suggested a possible joint effort. In 1989, I was willing to commit myself to such a project. Un fortunately, the timing was less than ideal for Dr. Remondi. Therefore, I decided to start the project with other coauthors. Dr. Remondi agreed and indicated his willingness to be a reviewer. I selected Dr. Herbert Lichtenegger, my colleague from the University of Technology at Graz, Austria, and Dr. James Collins from the United States. In my opinion, the knowledge of the three authors should cover the wide spectrum of GPS. Dr. Lichtenegger is a geodesist with broad experience in both theory and practice. He has specialized his research to geodetic astron omy including orbital theory and geodynamical phenomena. Since 1986, Dr. Lichtenegger's main interest is dedicated to GPS. Dr. Collins retired from the U.S. National Geodetic Survey in 1980, where he was the Deputy Director. For the past ten years, he has been deeply involved in using GPS technology with an emphasis on surveying. Dr. Collins was the founder and president of Geo/Hydro Inc. My own background is theoretically oriented. My first chief, Prof. Dr. Peter Meissl, was an excellent theoretician; and my former chief, Prof. DDDr. Helmut Moritz, fortunately, still is.
Download or read book Engineering Satellite Based Navigation and Timing written by John W. Betz and published by John Wiley & Sons. This book was released on 2015-12-29 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book describes the design and performance analysis of satnav systems, signals, and receivers, with a general approach that applies to all satnav systems and signals in use or under development. It also provides succinct descriptions and comparisons of each satnav system. Clearly structured, and comprehensive depiction of engineering satellite-based navigation and timing systems, signals, and receivers GPS as well as all new and modernized systems (SBAS, GLONASS, Galileo, BeiDou, QZSS, IRNSS) and signals being developed and fielded Theoretical and applied review questions, which can be used for homework or to obtain deeper insights into the material Extensive equations describing techniques and their performance, illustrated by MATLAB plots New results, novel insights, and innovative descriptions for key approaches and results in systems engineering and receiver design If you are an instructor and adopted this book for your course, please email [email protected] to get access to the instructor files for this book.
Download or read book Global Positioning System GPS written by George Torres and published by Nova Science Publishers. This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Positioning System (GPS) is used extensively in both the military and civilian communities for diverse activities, such as navigation, surveying, remote sensing, asset management and precise timing. Ionospheric scintillations are rapid variations in the amplitude and phase of transionospheric radio signal which affect the accuracy and reliability of GPS systems. This book provides new research on the performance, challenges and emerging technologies of Global Positioning Systems.
