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Author : Kuang-Chung Tu
Publisher :
ISBN 13 :
Total Pages : 410 pages
Book Rating : 4.:/5 (351 download)
Download or read book Precise Real-time Orbit Determination for Application to GPS Differential Positioning written by Kuang-Chung Tu and published by . This book was released on 1990 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 210 pages
Book Rating : 4.:/5 (946 download)
Download or read book Real Time, Autonomous, Precise Orbit Determination Using the Global Positioning System written by and published by . This book was released on 2000 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an effort to estimate precise satellite ephemeris in real-time on board a satellite, the Goddard Space Flight Center (GSFC) created the GPS Enhanced Orbit Determination Experiment (GEODE) flight navigation software. This dissertation offers alternative methods and improvements to GEODE to increase on board autonomy and real-time total position accuracy and precision without increasing computational burden. First, GEODE is modified to include a Gravity Acceleration Approximation Function (GAAF) to replace the traditional spherical harmonic representation of the gravity field. Next, an ionospheric correction method called Differenced Range Versus Integrated Doppler (DRVID) is applied to correct for ionospheric errors in the GPS measurements used in GEODE. Then, Dynamic Model Compensation (DMC) is added to estimate unmodeled and/or mismodeled forces in the dynamic model and to provide an alternative process noise variance-covariance formulation. Finally, a Genetic Algorithm (GA) is implemented in the form of Genetic Model Compensation (GMC) to optimize DMC forcing noise parameters. Application of GAAF, DRVID an(i DMC improved GEODE's position estimates by 28.3% when applied to GPS/MET data collected in the presence of Selective Availability (SA), 17.5% when SA is removed from the GPS/MET data and 10.8% on SA free TOPEX data. Position estimates with RSS errors below 1 meter are now achieved using SA free TOPEX data. DRVID causes an increase in computational burden while GAAF and DMC reduce computational burden. The net effect of applying GAAF, DRVID and DMC is an improvement in GEODE's accuracy/precision without an increase in computational burden.
Author : Gerhard Beutler
Publisher : Springer Science & Business Media
ISBN 13 : 3642801331
Total Pages : 345 pages
Book Rating : 4.6/5 (428 download)
Download or read book GPS Trends in Precise Terrestrial, Airborne, and Spaceborne Applications written by Gerhard Beutler and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings include most of the papers presented at the lAG Sympo sium GPS Trends in Precise Terrestrial, Airborne, and Spacebome Appli cations held in July 1995 during the XXI-th IUGG General Assembly in Boulder, Colorado. The symposium was jointly organized by the lAG and the International Union of Surveys and Mapping (IUSM). The symposium was divided into four sessions, namely (1) The International GPS Service for Geodynamics (IGS) and other Permanent Networks, (2) Spaceborne Applications of the GPS, (3) Kinematic Applications of the GPS, and (4) The GPS and its Relations to Geophysics. The main purpose was to give an overview of the state of the art in 1995 of the applications of the GPS to geodynamics, geodesy, surveying, and navi gation. The call for papers generated a flood of originally more than 70 abstracts; quite a few could be redirected to other symposia, but still 56 papers found their way into these proceedings. We thus conclude that the volume gives a rather complete overview of GPS Trends in Precise Terrestrial, Airborne, and Spacebome Applications in the year 1995.
Author : David Ben Goldstein
Publisher :
ISBN 13 :
Total Pages : 376 pages
Book Rating : 4.:/5 (468 download)
Download or read book Real-time, Autonomous Precise Satellite Orbit Determination Using the Global Positioning System written by David Ben Goldstein and published by . This book was released on 2000 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Scott Shannon Carter
Publisher :
ISBN 13 : 9781423580928
Total Pages : 518 pages
Book Rating : 4.5/5 (89 download)
Download or read book Precision Orbit Determination from GPS Receiver Navigation Solutions written by Scott Shannon Carter and published by . This book was released on 1996-06-01 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Satellite tracking techniques have traditionally been limited to ground-based stations that measure a satellite's range, azimuth, elevation and range rate, The advent of high accuracy Global Positioning System (GPS) navigation techniques, however, offers alternative methods. This thesis investigates the use of GPS navigation solutions (earth-centered, earth-fixed position and velocity information) as an observation source in a weighted least- squares orbit determination process. Such an orbit determination scheme could limit dependence upon the costly and complex ground-based tracking facilities for low and medium earth orbit satellites, while providing real-time information for on-board instrumentation and mission management. This investigation included modification of the Draper Laboratory version of the Goddard Trajectory Determination System (Draper R&D GTDS) to include coordinate systems compatible with the Fifth Fundamental Catalogue (FK5) and an inertial true equator and equinox of date frame. Solid earth tide modeling was introduced for numerical integration techniques and refined for semianalytic methods. The accuracy of the navigation solution-derived orbits (and the ability of Draper R&D GTDS to model spacecraft motion) is determined for the Ocean Topography Experiment (TOPEX), Technology for Autonomous Operational Survivability (TAOS), and Extreme Ultraviolet Explorer (EUVE) through comparison to high quality, independently generated 'truth' solutions (Precise Orbit Ephemerides, or POEs).
Author : Bradford W. Parkinson
Publisher : AIAA
ISBN 13 : 9781600864209
Total Pages : 688 pages
Book Rating : 4.8/5 (642 download)
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:
Author : Y. Jade Morton
Publisher : John Wiley & Sons
ISBN 13 : 1119458412
Total Pages : 1170 pages
Book Rating : 4.1/5 (194 download)
Download or read book Position, Navigation, and Timing Technologies in the 21st Century written by Y. Jade Morton and published by John Wiley & Sons. This book was released on 2021-01-13 with total page 1170 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers the latest developments in PNT technologies, including integrated satellite navigation, sensor systems, and civil applications Featuring sixty-four chapters that are divided into six parts, this two-volume work provides comprehensive coverage of the state-of-the-art in satellite-based position, navigation, and timing (PNT) technologies and civilian applications. It also examines alternative navigation technologies based on other signals-of-opportunity and sensors and offers a comprehensive treatment on integrated PNT systems for consumer and commercial applications. Volume 1 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications contains three parts and focuses on the satellite navigation systems, technologies, and engineering and scientific applications. It starts with a historical perspective of GPS development and other related PNT development. Current global and regional navigation satellite systems (GNSS and RNSS), their inter-operability, signal quality monitoring, satellite orbit and time synchronization, and ground- and satellite-based augmentation systems are examined. Recent progresses in satellite navigation receiver technologies and challenges for operations in multipath-rich urban environment, in handling spoofing and interference, and in ensuring PNT integrity are addressed. A section on satellite navigation for engineering and scientific applications finishes off the volume. Volume 2 of Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications consists of three parts and addresses PNT using alternative signals and sensors and integrated PNT technologies for consumer and commercial applications. It looks at PNT using various radio signals-of-opportunity, atomic clock, optical, laser, magnetic field, celestial, MEMS and inertial sensors, as well as the concept of navigation from Low-Earth Orbiting (LEO) satellites. GNSS-INS integration, neuroscience of navigation, and animal navigation are also covered. The volume finishes off with a collection of work on contemporary PNT applications such as survey and mobile mapping, precision agriculture, wearable systems, automated driving, train control, commercial unmanned aircraft systems, aviation, and navigation in the unique Arctic environment. In addition, this text: Serves as a complete reference and handbook for professionals and students interested in the broad range of PNT subjects Includes chapters that focus on the latest developments in GNSS and other navigation sensors, techniques, and applications Illustrates interconnecting relationships between various types of technologies in order to assure more protected, tough, and accurate PNT Position, Navigation, and Timing Technologies in the 21st Century: Integrated Satellite Navigation, Sensor Systems, and Civil Applications will appeal to all industry professionals, researchers, and academics involved with the science, engineering, and applications of position, navigation, and timing technologies. pnt21book.com
Author : Juan C. Ceva
Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.F/5 ( download)
Download or read book Real-time Dynamical GPS Ephemeris Prediction for WAAS Applications written by Juan C. Ceva and published by . This book was released on 1995 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Günter Seeber
Publisher : Walter de Gruyter
ISBN 13 : 3110200082
Total Pages : 613 pages
Book Rating : 4.1/5 (12 download)
Download or read book Satellite Geodesy written by Günter Seeber and published by Walter de Gruyter. This book was released on 2008-08-22 with total page 613 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book covers the entire field of satellite geodesy and is intended to serve as a textbook for advanced undergraduate and graduate students, as well as a reference for professionals and scientists in the fields of engineering and geosciences such as geodesy, surveying engineering, geomatics, geography, navigation, geophysics and oceanography. The text provides a systematic overview of fundamentals including reference systems, time, signal propagation and satellite orbits, together with observation methods such as satellite laser ranging, satellite altimetry, gravity field missions, very long baseline interferometry, Doppler techniques, and Global Navigation Satellite Systems (GNSS). Particular emphasis is given to positioning techniques, such as the NAVSTAR Global Positioning System (GPS), and to applications. Numerous examples are included which refer to recent results in the fields of global and regional control networks; gravity field modeling; Earth rotation and global reference frames; crustal motion monitoring; cadastral and engineering surveying; geoinformation systems; land, air, and marine navigation; marine and glacial geodesy; and photogrammetry and remote sensing. This book will be an indispensable source of information for all concerned with satellite geodesy and its applications, in particular for spatial referencing, geoinformation, navigation, geodynamics, and operational positioning.
Author : Heike Bock
Publisher :
ISBN 13 :
Total Pages : 242 pages
Book Rating : 4.F/5 ( download)
Download or read book Efficient Methods for Determining Precise Orbits of Low Earth Orbiters Using the Global Positioning System written by Heike Bock and published by . This book was released on 2003 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hyun Ho Rho
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (141 download)
Download or read book Precise Point Positioning with Wide Area Differential GPS Corrections written by Hyun Ho Rho and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wide area differential GPS (WADGPS) satellite-based augmentation system (SBAS) services, such as the Wide Area Augmentation System (WAAS) in U.S.A., provide satellite orbit and clock corrections and ionospheric delay corrections. Although their corrections are optimized for use with GPS single-frequency pseudorange measurements, the satellite orbit and clock corrections can be used to improve GPS positioning accuracy for dual-frequency users. The main objective of the research described in this dissertation is the design of a GPS dual-frequency data processing technique capable of producing high-accuracy point positioning results with WADGPS corrections. In this research, three major issues were identified as the satellite clock referencing issue, the resolution of the fast clock correction issue and the residual orbit and clock issue. By considering that the ways to handle the identified issues in a precise point positioning (PPP) process are different for different position estimator and different basis observables, a SBAS PPP with a weighted least-squares approach using a carefully designed sequential forward carrier-phase smoother and a SBAS PPP with sequential least-squares approach using un-differenced dual-frequency code and carrier-phase measurements have been developed. To account for the satellite clock referencing issue, the effects of the satellite instrumental biases have been precisely investigated and the observation equations for the different observables assuming the source of corrections is WADGPS have been developed. To account for the low resolutions of WAAS (or/and any SBAS corrections which follows the RTCA standard [2001]) fast clock corrections, a weighted moving average filter was adopted and a proper smoothing factor has been carefully determined. Finally, to take into account the residual orbit and clock errors, a varying carrier-phase ambiguity concept has been applied rather than assuming the ambiguity is constant over time. This method is only applicable for the SBAS PPP with a sequential least-squares method which has an ambiguity parameter for each satellite in the observation model. Results determined via developed software indicate a few decimeter-level of positioning accuracy for both developed PPP algorithms with (real-time) WADGPS orbit and clock corrections in kinematic mode could be attainable. Although a few decimeter-level of positioning accuracy are slightly less accurate than that of using precise orbit and clock products, it will give more flexibility and chances to choose a proper positioning technique, which can meet the majority of user expectations and their application needs. Furthermore, the algorithms developed in this research can be used for seamless PPP solutions with future SBAS corrections when all the planned SBASs are in operation.
Author : Robert J. Czerniak
Publisher : Transportation Research Board
ISBN 13 : 9780309061162
Total Pages : 56 pages
Book Rating : 4.0/5 (611 download)
Download or read book Applications of GPS for Surveying and Other Positioning Needs in Departments of Transportation written by Robert J. Czerniak and published by Transportation Research Board. This book was released on 1998 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: This synthesis will be of interest to both administrative and technical personnel in departments of transportation (DOTs), especially in the areas of surveying, mapping, transportation planning, environmental impact assessment, design, construction control, maintenance, operations, vehicle location, and other functions that require accurate location data. This report will be useful for intermodal transportation analyses and for measurement and positioning data for inventories and geographic information systems (GIS). It can also be useful to suppliers and developers of Global Positioning System (GPS) equipment. This report of the Transportation Research Board presents a description of GPS, the major components, basic geodesy principles, how GPS functions, and how it can be applicable to the data and analysis requirements of transportation agencies. The anticipated cost effectiveness of GPS in terms of personnel, equipment, and time as related to the improved accuracies to be derived from GPS applications are described. Current and more advanced applications of GPS by DOTs to different transportation modes are presented. The report also includes a glossary of terms and a listing of GPS information sources.
Author : Peter Teunissen
Publisher : Springer
ISBN 13 : 3319429280
Total Pages : 1335 pages
Book Rating : 4.3/5 (194 download)
Download or read book Springer Handbook of Global Navigation Satellite Systems written by Peter Teunissen and published by Springer. This book was released on 2017-06-16 with total page 1335 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Handbook presents a complete and rigorous overview of the fundamentals, methods and applications of the multidisciplinary field of Global Navigation Satellite Systems (GNSS), providing an exhaustive, one-stop reference work and a state-of-the-art description of GNSS as a key technology for science and society at large. All global and regional satellite navigation systems, both those currently in operation and those under development (GPS, GLONASS, Galileo, BeiDou, QZSS, IRNSS/NAVIC, SBAS), are examined in detail. The functional principles of receivers and antennas, as well as the advanced algorithms and models for GNSS parameter estimation, are rigorously discussed. The book covers the broad and diverse range of land, marine, air and space applications, from everyday GNSS to high-precision scientific applications and provides detailed descriptions of the most widely used GNSS format standards, covering receiver formats as well as IGS product and meta-data formats. The full coverage of the field of GNSS is presented in seven parts, from its fundamentals, through the treatment of global and regional navigation satellite systems, of receivers and antennas, and of algorithms and models, up to the broad and diverse range of applications in the areas of positioning and navigation, surveying, geodesy and geodynamics, and remote sensing and timing. Each chapter is written by international experts and amply illustrated with figures and photographs, making the book an invaluable resource for scientists, engineers, students and institutions alike.
Author :
Publisher :
ISBN 13 :
Total Pages : 23 pages
Book Rating : 4.:/5 (227 download)
Download or read book Precise Orbit Determination with GPS. written by and published by . This book was released on 1996 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Global Positioning System (GPS) is likely to become a powerful means in precise orbit determination (POD) of low-orbiting Earth satellites as long as it can fully cover the satellites. With its continuous tracking and coverage capabilities, this system can realize not only conventional dynamic precise orbit determination, but kinematic orbit determination as well. Technically, by smoothing the pseudo-range measurement values derived from at least four GPS satellites by using the carrier wave measurement values, the geocentric position at the phase center of the antenna and the clock correction values of the user satellites can be determined. Therefore, the foregoing technology does not require a dynamic model to impose a force on a user satellite. The kinematic method is extremely sensitive to the effects from measurement models, such as the GPS sidereal error (either as a given or to be solved), signal multipath, receiver noise, etc. On the other hand, however, the dynamic method also suffers from effects caused by parameter errors and/or imperfections of the force model. With this scenario, a hybred arrangement was proposed designed for weighting the kinematic and dynamic algorithms by compensating for the process noise. Our project was focused on the investigating these orbit determination methods through a simulation and covariance analysis with several dynamic and measurement error models. The orbital uncertainty generated by these models was found to be roughly equivalent to the sidereal error estimated in processing actual GPS data. In this case, the covariance analysis, when adjusted, was able to reflect these errors and to reveal the characteristics of various filtering techniques.
Author : Ahmed El-Rabbany
Publisher : Artech House
ISBN 13 : 9781580531832
Total Pages : 202 pages
Book Rating : 4.5/5 (318 download)
Download or read book Introduction to GPS written by Ahmed El-Rabbany and published by Artech House. This book was released on 2002 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt: If you're looking for an up-to-date, easy-to-understand treatment of the GPS (Global Positioning System), this one-of-a-kind resource offers you the knowledge you need for your work, without bogging you down with advanced mathematics. It addresses all aspects of the GPS, emphasizes GPS applications, examines the GPS signal structure, and covers the key types of measurement being utilized in the field today.
Author : Juan Hyun Jo
Publisher :
ISBN 13 :
Total Pages : 390 pages
Book Rating : 4.:/5 (51 download)
Download or read book Error Assessment of an Autonomous Real-time Precision Orbit Determination Program for a Low-Earth-orbit Satellite Using GPS Observation Data written by Juan Hyun Jo and published by . This book was released on 2002 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Institute of Navigation. Satellite Division. International Technical Meeting
Publisher :
ISBN 13 :
Total Pages : 796 pages
Book Rating : 4.:/5 (318 download)
Download or read book Proceedings of ION GPS-94 written by Institute of Navigation. Satellite Division. International Technical Meeting and published by . This book was released on 1994 with total page 796 pages. Available in PDF, EPUB and Kindle. Book excerpt:
