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:
Download or read book Near Real time Precise Orbit Determination of Low Earth Orbit Satellites Using an Optimal GPS Triple differencing Technique written by Tae-Suk Bae and published by . This book was released on 2006 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: During the last decade, numerous Low Earth Orbit (LEO) satellites, including TOPEX/POSEIDON, CHAMP and GRACE, have been launched for scientific purposes at altitudes ranging from 400 km to 1300 km. To support GPS meteorology, efficient LEO orbit determination methods were developed using the triple-differenced GPS phase observations. These methods include the kinematic, dynamic, and reduced-dynamic approach based on the wave algorithm. To test the developed algorithms, 24 hours of CHAMP data on February 15, 2003, which amounts to 15 revolutions, were used for each method. Precise IGS orbits are used for the GPS satellites, and 43 IGS ground tracking stations were chosen using the algorithm developed in this study, based on the network optimization theory. The estimated orbit solutions were compared with the published Rapid Science Orbit (RSO) and the consistency testing was performed for the dynamic solution. In addition, the SLR residuals were also computed as an independent validation of the methods presented here. After the forward and backward filtering, the kinematic approach shows accuracy better than "20 cm in 3D RMS for a half day arc compared to the reference RSO. With this careful modeling, the dynamic solution shows an agreement within "8 cm in position and "0.12 mm/s in velocity of RSO. The computation time of the dynamic solution for the 24-hour arc is 2.5 hours on a 3 GHz PC platform. The wave algorithm shows a better fit to RSO for each tested segment. However, there is slightly larger bias in its solution, thus, the overall RMS of fit is comparable to the dynamic orbit solution. The CHAMP orbit is successfully estimated in this study to support, for example, the GPS meteorology, using a new method that is accurate as well as fast and efficient. The hypothesis testing indicates that the estimated dynamic solution of this study is consistent with the published RSO. Also, the SLR residual test shows that the CHAMP orbit solution estimated in this study is comparable to solutions determined by other analysis centers, such as JPL and GFZ.
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).
Download or read book Precise Orbit Determination of Low Earth Orbiters with a Single GPS Receiver based Geometric Strategy written by Sunil B. Bisnath and published by . This book was released on 2004 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Earth Observation with CHAMP written by Christoph Reigber and published by Springer Science & Business Media. This book was released on 2005 with total page 648 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the summer of 2000 the German geo-research satellite CHAMP was launched into orbit. Its innovative payload arrangement and the low initial orbit allow CHAMP to simultaneously collect and almost continuously analyse precise data relating to gravity and magnetic fields at low altitude. In addition, CHAMP also measures the neutral atmosphere and ionosphere using GPS techniques. Three years after launch, more than 200 CHAMP investigators and co-investigators from all over the world met at the GeoForschungsZentrum in Potsdam to present and discuss the results derived from the extensive data sets of the mission. The main outcome of this expert meeting is summarized in this volume. The book offers a comprehensive insight into the present status of the exploitation of CHAMP data for Earth system research and practical applications in geodesy, geophysics and meteorology.
Download or read book China Satellite Navigation Conference CSNC 2013 Proceedings written by Jiadong Sun and published by Springer Science & Business Media. This book was released on 2014-07-08 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: China Satellite Navigation Conference (CSNC) 2013 Proceedings presents selected research papers from CSNC2013, held on 15-17 May in Wuhan, China. The theme of CSNC2013 is: BeiDou Application: Opportunities and Challenges. These papers discuss the technologies and applications of the Global Navigation Satellite System (GNSS), and the latest progress made in the China BeiDou system especially. They are divided into 9 topics to match the corresponding sessions in CSNC2013, which broadly covered key topics in GNSS. Readers can learn about the BeiDou system and keep abreast of the latest advances in GNSS techniques and applications. SUN Jiadong is the Chief Designer of the Compass/BeiDou system, and the Academician of Chinese Academy of Sciences (CAS); JIAO Wenhai is a researcher at China Satellite Navigation Office; WU Haitao is a professor at Navigation Headquarters, CAS; SHI Chuang is a professor at Wuhan University.
Download or read book Geometrical Theory of Satellite Orbits and Gravity Field written by Drazen Svehla and published by Springer. This book was released on 2018-07-02 with total page 542 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book on space geodesy presents pioneering geometrical approaches in the modelling of satellite orbits and gravity field of the Earth, based on the gravity field missions CHAMP, GRACE and GOCE in the LEO orbit. Geometrical approach is also extended to precise positioning in space using multi-GNSS constellations and space geodesy techniques in the realization of the terrestrial and celestial reference frame of the Earth. This book addresses major new developments that were taking place in space geodesy in the last decade, namely the availability of GPS receivers onboard LEO satellites, the multitude of the new GNSS satellite navigation systems, the huge improvement in the accuracy of satellite clocks and the revolution in the determination of the Earth's gravity field with dedicated satellite missions.
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.
Download or read book Geodesy for Planet Earth written by Steve Kenyon and published by Springer Science & Business Media. This book was released on 2012-01-26 with total page 992 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings include the written version of 130 papers presented at the International Association of Geodesy IAG2009 "Geodesy for Planet Earth" Scientific Assembly. It was held 31 August to 4 September 2009 in Buenos Aires, Argentina. The theme "Geodesy for Planet Earth" was selected to follow the International Year of Planet Earth 2007-2009 goals of utilizing the knowledge of the world’s geoscientists to improve society for current and future generations. The International Year started in January 2007 and ran thru 2009 which coincided with the IAG2009 Scientific Assembly, one of the largest and most significant meetings of the Geodesy community held every 4 years. The IAG2009 Scientific Assembly was organized into eight Sessions. Four of the Sessions of IAG2009 were based on the IAG Structure (i.e. one per Commission) and covered Reference Frames, Gravity Field, Earth Rotation and Geodynamics, and Positioning and Applications. Since IAG2009 was taking place in the great Argentine city of Buenos Aires, a Session was devoted to the Geodesy of Latin America. A Session dedicated to the IAG’s Global Geodetic Observing System (GGOS), the primary observing system focused on the multidisciplinary research being done in Geodesy that contributes to important societal issues such as monitoring global climate change and the environment. A Session on the IAG Services was also part of the Assembly detailing the important role they play in providing geodetic data, products, and analysis to the scientific community. A final Session devoted to the organizations ION, FIG, and ISPRS and their significant work in navigation and earth observation that complements the IAG.
Download or read book China Satellite Navigation Conference CSNC 2016 Proceedings Volume III written by Jiadong Sun and published by Springer. This book was released on 2016-04-26 with total page 719 pages. Available in PDF, EPUB and Kindle. Book excerpt: These Proceedings present selected research papers from CSNC2016, held during 18th-20th May in Changsha, China. The theme of CSNC2016 is Smart Sensing, Smart Perception. These papers discuss the technologies and applications of the Global Navigation Satellite System (GNSS), and the latest progress made in the China BeiDou System (BDS) especially. They are divided into 12 topics to match the corresponding sessions in CSNC2016, which broadly covered key topics in GNSS. Readers can learn about the BDS and keep abreast of the latest advances in GNSS techniques and applications.
Download or read book Methods of Celestial Mechanics written by Gerhard Beutler and published by Springer Science & Business Media. This book was released on 2005-11-21 with total page 452 pages. Available in PDF, EPUB and Kindle. Book excerpt: G. Beutler's Methods of Celestial Mechanics is a coherent textbook for students as well as an excellent reference for practitioners. The first volume gives a thorough treatment of celestial mechanics and presents all the necessary mathematical details that a professional would need. The reader will appreciate the well-written chapters on numerical solution techniques for ordinary differential equations, as well as that on orbit determination. In the second volume applications to the rotation of earth and moon, to artificial earth satellites and to the planetary system are presented. The author addresses all aspects that are of importance in high-tech applications, such as the detailed gravitational fields of all planets and the earth, the oblateness of the earth, the radiation pressure and the atmospheric drag. The concluding part of this monumental treatise explains and details state-of-the-art professional and thoroughly-tested software for celestial mechanics.
Download or read book China Satellite Navigation Conference CSNC 2022 Proceedings written by Changfeng Yang and published by Springer Nature. This book was released on 2022-05-05 with total page 634 pages. Available in PDF, EPUB and Kindle. Book excerpt: China Satellite Navigation Conference (CSNC 2022) Proceedings presents selected research papers from CSNC 2022 held during 25th-27th May, 2022 in Beijing, China. These papers discuss the technologies and applications of the Global Navigation Satellite System (GNSS), and the latest progress made in the China BeiDou System (BDS) especially. They are divided into 10 topics to match the corresponding sessions in CSNC2022 which broadly covered key topics in GNSS. Readers can learn about the BDS and keep abreast of the latest advances in GNSS techniques and applications.
Download or read book Spacecraft Collision Avoidance Technology written by Zhang Rongzhi and published by Academic Press. This book was released on 2020-03-18 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spacecraft Collision Avoidance Technology presents the theory and practice of space collision avoidance. The title gives models of time and space environment, their impact on high-precision orbit prediction, considers optimal orbit determination methods and models in different warning stages, and establishes basic models for warning and avoidance. Chapters present an outline of spacecraft collision warning strategy, elaborate on the basics of orbital calculation for collision avoidance, consider space object detection technology, detail space environment and object orbit, give a method for spacecraft collision warning orbit calculation, and finally, demonstrate a strategy for spacecraft collision warning and avoidance. Presents strategies, methods and real-world examples relating to space collision avoidance Considers time and space environment models in orbit prediction Gives optimal orbit determination methods and models for various warning stages Establishes and elaborates basic models for warning and avoidance Takes note of the current space environment for object detection and collision avoidance
Download or read book China Satellite Navigation Conference CSNC 2012 Proceedings written by Jiadong Sun and published by Springer Science & Business Media. This book was released on 2012-04-05 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 3rd China Satellite Navigation Conference (CSNC2012) presents selected research papers from CSNC2012, held on 15-19 May in Guanzhou, China. These papers discuss the technologies and applications of the Global Navigation Satellite System (GNSS), and the latest progress made in the China BeiDou system especially. They are divided into 9 topics to match the corresponding sessions in CSNC2012, which broadly covered key topics in GNSS. Readers can learn about the BeiDou system and keep abreast of the latest advances in GNSS techniques and applications. SUN Jiadong is the Chief Designer of the Compass/BeiDou system, and the Academician of Chinese Academy of Sciences; LIU Jingnan is a professor at Wuhan University, and the Academician of Chinese Academy of Engineering; YANG Yuanxi is a professor at China National Administration of GNSS and Applications, and the Academician of Chinese Academy of Sciences; FAN Shiwei is a researcher on satellite navigation.
Download or read book Low earth Orbit Satellite Position and Velocity Determination Using the Global Positioning System written by Khanh Quoc Do and published by . This book was released on 1997 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Modeling and Validating Orbits and Clocks Using the Global Positioning System written by Timon Anton Springer and published by . This book was released on 2000 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Satellite Orbits written by Oliver Montenbruck and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 378 pages. Available in PDF, EPUB and Kindle. Book excerpt: This modern presentation guides readers through the theory and practice of satellite orbit prediction and determination. Starting from the basic principles of orbital mechanics, it covers elaborate force models as well as precise methods of satellite tracking. The accompanying CD-ROM includes source code in C++ and relevant data files for applications. The result is a powerful and unique spaceflight dynamics library, which allows users to easily create software extensions. An extensive collection of frequently updated Internet resources is provided through WWW hyperlinks.
