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Author : Robert F. Weirauch
Publisher :
ISBN 13 :
Total Pages : 22 pages
Book Rating : 4.:/5 (31 download)
Download or read book On the Accuracy of an Elliptical Orbit Determination written by Robert F. Weirauch and published by . This book was released on 1961 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert F. Weirauch
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (249 download)
Download or read book On the Accuracy of an Elliptical Orbit Determination written by Robert F. Weirauch and published by . This book was released on 1961 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 354 pages
Book Rating : 4.:/5 (319 download)
Download or read book NASA Technical Note written by and published by . This book was released on 1961 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Alton P. Mayo
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.:/5 (31 download)
Download or read book Method for Determination of the Accuracy of Closed Distant Stationary Orbits Determined from Range Rate written by Alton P. Mayo and published by . This book was released on 1970 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309261457
Total Pages : 82 pages
Book Rating : 4.3/5 (92 download)
Download or read book Continuing Kepler's Quest written by National Research Council and published by National Academies Press. This book was released on 2012-09-06 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: In February 2009, the commercial communications satellite Iridium 33 collided with the Russian military communications satellite Cosmos 2251. The collision, which was not the first recorded between two satellites in orbit-but the most recent and alarming-produced thousands of pieces of debris, only a small percentage of which could be tracked by sensors located around the world. In early 2007, China tested a kinetic anti-satellite weapon against one of its own satellites, which also generated substantial amounts of space debris. These collisions highlighted the importance of maintaining accurate knowledge, and the associated uncertainty, of the orbit of each object in space. These data are needed to predict close approaches of space objects and to compute the probability of collision so that owners/operators can decide whether or not to make a collision avoidance maneuver by a spacecraft with such capability. The space object catalog currently contains more than 20,000 objects, and when the planned space fence radar becomes operational this number is expected to exceed 100,000. A key task is to determine if objects might come closer to each other, an event known as "conjunction," and the probability that they might collide. The U.S. Air Force is the primary U.S. government organization tasked with maintaining the space object catalog and data on all space objects. This is a complicated task, involving collecting data from a multitude of different sensors-many of which were not specifically designed to track orbiting objects-and fusing the tracking data along with other data, such as data from atmospheric models, to provide predictions of where objects will be in the future. The Committee for the Assessment of the U.S. Air Force's Astrodynamic Standards collected data and heard from numerous people involved in developing and maintaining the current astrodynamics standards for the Air Force Space Command (AFSPC), as well as representatives of the user community, such as NASA and commercial satellite owners and operators. Preventing collisions of space objects, regardless of their ownership, is in the national security interested of the United States. Continuing Kepler's Quest makes recommendations to the AFSPC in order for it to create and expand research programs, design and develop hardware and software, as well as determine which organizations to work with to achieve its goals.
Author : Howard D. Curtis
Publisher : Elsevier
ISBN 13 : 0080887848
Total Pages : 740 pages
Book Rating : 4.0/5 (88 download)
Download or read book Orbital Mechanics for Engineering Students written by Howard D. Curtis and published by Elsevier. This book was released on 2009-10-26 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt: Orbital Mechanics for Engineering Students, Second Edition, provides an introduction to the basic concepts of space mechanics. These include vector kinematics in three dimensions; Newton's laws of motion and gravitation; relative motion; the vector-based solution of the classical two-body problem; derivation of Kepler's equations; orbits in three dimensions; preliminary orbit determination; and orbital maneuvers. The book also covers relative motion and the two-impulse rendezvous problem; interplanetary mission design using patched conics; rigid-body dynamics used to characterize the attitude of a space vehicle; satellite attitude dynamics; and the characteristics and design of multi-stage launch vehicles. Each chapter begins with an outline of key concepts and concludes with problems that are based on the material covered. This text is written for undergraduates who are studying orbital mechanics for the first time and have completed courses in physics, dynamics, and mathematics, including differential equations and applied linear algebra. Graduate students, researchers, and experienced practitioners will also find useful review materials in the book. - NEW: Reorganized and improved discusions of coordinate systems, new discussion on perturbations and quarternions - NEW: Increased coverage of attitude dynamics, including new Matlab algorithms and examples in chapter 10 - New examples and homework problems
Author : National Aeronautics and Space Administration (NASA)
Publisher : Createspace Independent Publishing Platform
ISBN 13 : 9781720655640
Total Pages : 90 pages
Book Rating : 4.6/5 (556 download)
Download or read book Orbit Determination Accuracy for Comets on Earth-Impacting Trajectories written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-03 with total page 90 pages. Available in PDF, EPUB and Kindle. Book excerpt: The results presented show the level of orbit determination accuracy obtainable for long-period comets discovered approximately one year before collision with Earth. Preliminary orbits are determined from simulated observations using Gauss' method. Additional measurements are incorporated to improve the solution through the use of a Kalman filter, and include non-gravitational perturbations due to outgassing. Comparisons between observatories in several different circular heliocentric orbits show that observatories in orbits with radii less than 1 AU result in increased orbit determination accuracy for short tracking durations due to increased parallax per unit time. However, an observatory at 1 AU will perform similarly if the tracking duration is increased, and accuracy is significantly improved if additional observatories are positioned at the Sun-Earth Lagrange points L3, L4, or L5. A single observatory at 1 AU capable of both optical and range measurements yields the highest orbit determination accuracy in the shortest amount of time when compared to other systems of observatories.Kay-Bunnell, LindaLangley Research CenterCOMETS; ORBIT DETERMINATION; TRAJECTORIES; HYPERVELOCITY IMPACT; EARTH SURFACE; MATHEMATICAL MODELS; KALMAN FILTERS; GAUSS EQUATION; OUTGASSING; SOLAR ORBITS; COMETARY COLLISIONS; NEAR EARTH OBJECTS; MANY BODY PROBLEM; PROPAGATION; PERTURBATION; SOLAR PARALLAX; PARALLAX
Author : John V. Breakwell
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (44 download)
Download or read book Accuracy of Orbit Determination written by John V. Breakwell and published by . This book was released on 1960 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fucheng Liu
Publisher : Springer
ISBN 13 : 9811079595
Total Pages : 245 pages
Book Rating : 4.8/5 (11 download)
Download or read book Guidance and Control Technology of Spacecraft on Elliptical Orbit written by Fucheng Liu and published by Springer. This book was released on 2018-08-14 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces readers to the navigation, guidance and control technologies involved in single-spacecraft, double-spacecraft, and multiple-spacecraft tasks in elliptical orbits. It comprehensively covers the key technologies of guidance, navigation and control (GNC) system design for spacecraft in elliptical orbits, including the orbit design, formation configuration design and maintenance, autonomous navigation technology and relative navigation technology, as well as autonomous rendezvous technology. The methods that this book introduces are very close to actual practical engineering applications and presented in an accessible style. The book can serve as reference teaching material for senior undergraduates and postgraduates with space navigation related majors, while also providing essential information and guidance for research personnel and engineering technical personnel engaged in the development of GNC systems for spacecraft.
Author : Frank A. Marcos
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (91 download)
Download or read book Orbital Bias Determination for Accelerometers on Atmosphere Explorer Satellites written by Frank A. Marcos and published by . This book was released on 1977 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: An extensive amount of neutral density data has been obtained from the highly successful accelerometer experiments on the Atmosphere Explorer -C, -D, and -E satellites. The accelerometer is electrostatically suspended and force rebalanced. Ground calibration requires sufficient suspension force to operate in the earth's 1g field. An important characteristic of the instrument is its null bias which is proportional to the suspension voltage. Null bias error is reduced when the instrument is in orbit by reducing the suspension force. For despun orbit data, accelerations due to bias must be separated from those due to drag for accurate density computation. In the elliptical orbit phase of the AE missions, bias values have been deduced from the sensor output obtained at altitudes where aerodynamic drag is negligible. Bias measurements obtained from all three satellites are summarized. A bias temperature coefficient is also calculated. Results in this report show that orbital values differ from a simple extrapolation of the ground calibration data. This difference must be known to obtain accurate density data above about 200 km. The orbital bias results are applied to improve the accuracy of despun orbit measurements made during both the elliptical and circular orbit phases of the AE mission. Methods of extending bias determination to circular orbit data are discussed. (Author).
Author :
Publisher :
ISBN 13 :
Total Pages : 400 pages
Book Rating : 4.:/5 (35 download)
Download or read book NASA Technical Note written by and published by . This book was released on 1964 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 704 pages
Book Rating : 4.:/5 (31 download)
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert M. L. Baker
Publisher :
ISBN 13 :
Total Pages : 92 pages
Book Rating : 4.E/5 ( download)
Download or read book Recent Advances in Astrodynamics, 1961 written by Robert M. L. Baker and published by . This book was released on 1962 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: The review surveys eight subdivisions within astrodynamics: geometry, coordinate systems and ephemerides; astrodynamic constants (including heliocentric, genocentric, lunar and planetary, and atmospheric constants); orbit determination; orbit perturbations (gravitational and nongravitational); orbit prediction (using both special and general perturbation techniques); applications (orbit selection and optimization, low thrust orbits, geocentric orbits, lunar, planetary and interplanetary orbits); observation theory; and attitude dynamics. Each subdivision is introduced and a number of the outstanding research papers in each area are mentioned. Specifically, an effort is made to delineate voids in our knowledge and to point up areas of profitable future research in astrodynamics. (Author).
Author : U. Esser
Publisher : Springer Science & Business Media
ISBN 13 : 3662123649
Total Pages : 1266 pages
Book Rating : 4.6/5 (621 download)
Download or read book Literature 1988, Part 1 written by U. Esser and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 1266 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the reviews: "Astronomy and Astrophysics Abstracts has appeared in semi-annual volumes since 1969 and it has already become one of the fundamental publications in the fields of astronomy, astrophysics and neighbouring sciences. It is the most important English-language abstracting journal in the mentioned branches. ...The abstracts are classified under more than a hundred subject categories, thus permitting a quick survey of the whole extended material. The AAA is a valuable and important publication for all students and scientists working in the fields of astronomy and related sciences. As such it represents a necessary ingredient of any astronomical library all over the world." Space Science Reviews#1 "Dividing the whole field plus related subjects into 108 categories, each work is numbered and most are accompanied by brief abstracts. Fairly comprehensive cross-referencing links relevant papers to more than one category, and exhaustive author and subject indices are to be found at the back, making the catalogues easy to use. The series appears to be so complete in its coverage and always less than a year out of date that I shall certainly have to make a little more space on those shelves for future volumes." The Observatory Magazine#2
Author :
Publisher :
ISBN 13 :
Total Pages : 1014 pages
Book Rating : 4.:/5 (334 download)
Download or read book U.S. Government Research & Development Reports written by and published by . This book was released on 1966-11 with total page 1014 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Oliver Montenbruck
Publisher : Springer Science & Business Media
ISBN 13 : 3642583512
Total Pages : 378 pages
Book Rating : 4.6/5 (425 download)
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.
Author : C.W.P. Reuterswärd
Publisher : Springer Science & Business Media
ISBN 13 : 3709180716
Total Pages : 729 pages
Book Rating : 4.7/5 (91 download)
Download or read book XIth International Astronautical Congress Stockholm 1960 written by C.W.P. Reuterswärd and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 729 pages. Available in PDF, EPUB and Kindle. Book excerpt:
