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Autonomous Star Sensing And Pattern Recognition For Spacecraft Attitude Determination Microform
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Author :David Stephen Anderson Publisher :Ann Arbor, Mich. : University Microfilms International ISBN 13 : Total Pages :482 pages Book Rating :4.:/5 (253 download)
Book Synopsis Autonomous Star Sensing and Pattern Recognition for Spacecraft Attitude Determination [microform] by : David Stephen Anderson
Download or read book Autonomous Star Sensing and Pattern Recognition for Spacecraft Attitude Determination [microform] written by David Stephen Anderson and published by Ann Arbor, Mich. : University Microfilms International. This book was released on 1991 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Autonomous Star Sensing, Pattern Identification, and Attitude Determination for Spacecraft by : Gwanghyeok Ju
Download or read book Autonomous Star Sensing, Pattern Identification, and Attitude Determination for Spacecraft written by Gwanghyeok Ju and published by . This book was released on 2001 with total page 398 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Toward Faster and More Accurate Star Sensors Using Recursive Centroiding and Star Identification by : Malak Anees Samaan
Download or read book Toward Faster and More Accurate Star Sensors Using Recursive Centroiding and Star Identification written by Malak Anees Samaan and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to study different novel developed techniques for spacecraft attitude determination methods using star tracker sensors. This dissertation addresses various issues on developing improved star tracker software, presents new approaches for better performance of star trackers, and considers applications to realize high precision attitude estimates. Star-sensors are often included in a spacecraft attitude-system instrument suite, where high accuracy pointing capability is required. Novel methods for image processing, camera parameters ground calibration, autonomous star pattern recognition, and recursive star identification are researched and implemented to achieve high accuracy and a high frame rate star tracker that can be used for many space missions. This dissertation presents the methods and algorithms implemented for the one Field of View 'FOV' StarNavI sensor that was tested aboard the STS-107 mission in spring 2003 and the two fields of view StarNavII sensor for the EO-3 spacecraft scheduled for launch in 2007. The results of this research enable advances in spacecraft attitude determination based upon real time star sensing and pattern recognition. Building upon recent developments in image processing, pattern recognition algorithms, focal plane detectors, electro-optics, and microprocessors, the star tracker concept utilized in this research has the following key objectives for spacecraft of the future: lower cost, lower mass and smaller volume, increased robustness to environment-induced aging and instrument response variations, increased adaptability and autonomy via recursive self-calibration and health-monitoring on-orbit. Many of these attributes are consequences of improved algorithms that are derived in this dissertation.
Book Synopsis Autonomous Artificial Neural Network Star Tracker for Spacecraft Attitude Determination by : Aaron James Trask
Download or read book Autonomous Artificial Neural Network Star Tracker for Spacecraft Attitude Determination written by Aaron James Trask and published by . This book was released on 2002 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis An Efficient and Robust Singular Value Method for Star Pattern Recognition and Attitude Determination by : Jer-Nan Juang
Download or read book An Efficient and Robust Singular Value Method for Star Pattern Recognition and Attitude Determination written by Jer-Nan Juang and published by . This book was released on 2003 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Star Pattern Recognition and Spacecraft Attitude Determination by : John L. Junkins
Download or read book Star Pattern Recognition and Spacecraft Attitude Determination written by John L. Junkins and published by . This book was released on 1978 with total page 59 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the research activities described in this document is to research and develop a system for on-board attitude determination for satellites, achieving sub-five arc-second accuracy when such a system is interfaced with a general purpose star tracker (typical of several existing configurations). The primary motivation for this research is the exploitation of recently developed light sensitive Charge-Doupled-Devices (CCD) in the focal plane of a tracker lens. The CCD will act as a 'film' for imaging starlight and from which the attitude can be determined. The attitude determination can be performed on-board with a high degree of accuracy and high speed. A typical CCD for this application consists of about 200,000 light-sensitive elements or pixels, accurately imbedded (to 1 part in 10,000) in a microcircuit chip. The CCD can be scanned electronically and the voltage response of illuminated pixels digitized for processing by a microcomputer; corrections can be applied for image distortion based upon apriori calibration. (Author).
Book Synopsis Star Pattern Recognition and Spacecraft Attitude Determination by :
Download or read book Star Pattern Recognition and Spacecraft Attitude Determination written by and published by . This book was released on 1978 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the research activities described in this document is to research and develop a system for on-board attitude determination for satellites, achieving sub-five arc-second accuracy when such a system is interfaced with a general purpose star tracker (typical of several existing configurations). The primary motivation for this research is the exploitation of recently developed light sensitive Charge-Doupled-Devices (CCD) in the focal plane of a tracker lens. The CCD will act as a 'film' for imaging starlight and from which the attitude can be determined. The attitude determination can be performed on-board with a high degree of accuracy and high speed. A typical CCD for this application consists of about 200,000 light-sensitive elements or pixels, accurately imbedded (to 1 part in 10,000) in a microcircuit chip. The CCD can be scanned electronically and the voltage response of illuminated pixels digitized for processing by a microcomputer; corrections can be applied for image distortion based upon apriori calibration. (Author).
Book Synopsis Star Pattern Recognition and Spacecraft Attitude Determination by : John L. Junkins
Download or read book Star Pattern Recognition and Spacecraft Attitude Determination written by John L. Junkins and published by . This book was released on 1978 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the research activities described in this document is to research and develop a system for on-board attitude determination for satellites, achieving sub-five arc-second accuracy when such a system is interfaced with a general purpose star tracker (typical of several existing configurations). The primary motivation for this research is the exploitation of recently developed light sensitive Charge-Doupled-Devices (CCD) in the focal plane of a tracker lens. The CCD will act as a 'film' for imaging starlight and from which the attitude can be determined. The attitude determination can be performed on-board with a high degree of accuracy and high speed. A typical CCD for this application consists of about 200,000 light-sensitive elements or pixels, accurately imbedded (to 1 part in 10,000) in a microcircuit chip. The CCD can be scanned electronically and the voltage response of illuminated pixels digitized for processing by a microcomputer; corrections can be applied for image distortion based upon apriori calibration. (Author).
Book Synopsis A new star identification algorithm for autonomous spacecraft attitude determination by : Loic Jean Chiquillo
Download or read book A new star identification algorithm for autonomous spacecraft attitude determination written by Loic Jean Chiquillo and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Development of Star Tracker System for Accurate Estimation of Spacecraft Attitude by :
Download or read book Development of Star Tracker System for Accurate Estimation of Spacecraft Attitude written by and published by . This book was released on 2009 with total page 89 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis researches different star pattern recognition and attitude determination algorithms for a three-axis rotational spacecraft. A simulated star field will be suspended above the experimental Three-Axis Spacecraft simulator to proved a reference for the star-pattern recognition algorithms. A star field inertial reference frame database of stars will be developed with the simulator at zero attitude. The angle, planar triangle and spherical triangle star patter recongition algorithms will then be used to identify which stars are within a camera's field of vision. The imaged stars will then be matched up to the corresponding stars within the test bed database. With the imaged stars identified and the corresponding inertial frame reference data, the test bed's attitude will be determined using the least-squares, TRIAD, and Quaternion Estimator (QUEST) attitude determination algorithms. On the three-axis simulator, an iterative algorithm is developed to demonstrate increasing star tracker accuracy with each update A matrix.
Book Synopsis Optimization of a Star Pattern Recognition Algorithm for an Intelligent Star Tracker Using a Multi-objective Genetic Algorithm by : Ampem Ebenezer Seisie-Amoasi
Download or read book Optimization of a Star Pattern Recognition Algorithm for an Intelligent Star Tracker Using a Multi-objective Genetic Algorithm written by Ampem Ebenezer Seisie-Amoasi and published by . This book was released on 2004 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Attitude determination for a spacecraft using a star tracker is required to be fast, reliable, robust, and autonomous. This translates into requiring simple algorithms, which reduces the requirement of power and weight. To optimize a Star Pattern Recognition Algorithm (SPRA) using a real star map designed for such a purpose requires optimization of the genetic operators that constitute the SPRA. In addition, one requires a multi-objective genetic algorithm to optimize the SPRA control parameters. For this work, a multi-map scheme, combined with rolling dynamics, was employed. The developed Generation Adaptive Candidate (GAC) range mutability operation uses concurrent genotypic evolution rather than evolution history. Using a meta-level genetic algorithm employing a Double Objective Transition (DOT) selection scheme, a pareto solution set is evolved from which the optimal control parameters for the SPRA are determined. A 0.5 population elements ratio rule is observed to ensure effective balance between population exploitation and exploration. This rule leads to effective solutions on all the optimization objectives concurrently. With a minimum field of view of 20°, the optimized SPRA achieves an accuracy level of about 22±11 arc-second on the average at 99% precision and 100% recognition.
Book Synopsis Spacecraft Attitude Determination and Control by : J.R. Wertz
Download or read book Spacecraft Attitude Determination and Control written by J.R. Wertz and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 877 pages. Available in PDF, EPUB and Kindle. Book excerpt: Roger D. Werking Head, Attitude Determination and Control Section National Aeronautics and Space Administration/ Goddard Space Flight Center Extensiye work has been done for many years in the areas of attitude determination, attitude prediction, and attitude control. During this time, it has been difficult to obtain reference material that provided a comprehensive overview of attitude support activities. This lack of reference material has made it difficult for those not intimately involved in attitude functions to become acquainted with the ideas and activities which are essential to understanding the various aspects of spacecraft attitude support. As a result, I felt the need for a document which could be used by a variety of persons to obtain an understanding of the work which has been done in support of spacecraft attitude objectives. It is believed that this book, prepared by the Computer Sciences Corporation under the able direction of Dr. James Wertz, provides this type of reference. This book can serve as a reference for individuals involved in mission planning, attitude determination, and attitude dynamics; an introductory textbook for stu dents and professionals starting in this field; an information source for experimen ters or others involved in spacecraft-related work who need information on spacecraft orientation and how it is determined, but who have neither the time nor the resources to pursue the varied literature on this subject; and a tool for encouraging those who could expand this discipline to do so, because much remains to be done to satisfy future needs.
Book Synopsis Intelligent Star Pattern Recognition Techniques for Attitude Determination by : Lalitha Paladugu
Download or read book Intelligent Star Pattern Recognition Techniques for Attitude Determination written by Lalitha Paladugu and published by . This book was released on 2004 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Civil-Military Change in China Elites, Institutes, and Ideas after the 16th Party Congress by : Larry Wortzel
Download or read book Civil-Military Change in China Elites, Institutes, and Ideas after the 16th Party Congress written by Larry Wortzel and published by DIANE Publishing. This book was released on 2004 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: In November 2002, the Chinese Communist Party held its 16th Congress and formally initiated a sweeping turnover of senior leaders in both the Party and the People's Liberation Army (PLA). The meeting heralded not merely a new set of personalities in positions of political and military power, but also the emergence of a new generation of leaders. Who are these individuals, and what does their rise mean for the future of China and its military? The group of China specialists who have written this book have applied their research talents, intelligence, and hands-on experience to clarify and explain the most important issues of the day in China. China obviously matters to the United States because of its size, its spectacular patterns of growth, its profound problems linked to rapid growth, and its military intentions. These specialists have avoided the diseases of bias, demagoguery, predispositions, and showmanship, which infect so many of the analyses of China. Rather, they have examined the facts and the trends to explain the divisions and cohesions in the Chinese leadership and their potential significance to the United States and the rest of the world. These annual conferences have a long continuity stretching back to the early 1990s. Hence, there is a common database for the books produced each year. The writers revisit major problems in China's development, particularly in the military sphere. They also examine how Chinese policies have evolved over the years, and how important the United States has been in influencing China's strategy. What, for instance, will the emerging leadership with its factious differences do about Taiwan and North Korea? The conference took place at the Carlisle Barracks in September 19- 21, 2003, and was sponsored by the American Enterprise Institute, the Heritage Foundation and the Army War College. The exchanges were frank, the atmosphere was filled with camaraderie and tension.
Book Synopsis Dictionary of Acronyms and Technical Abbreviations by : Jakob Vlietstra
Download or read book Dictionary of Acronyms and Technical Abbreviations written by Jakob Vlietstra and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 703 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Dictionary covers information and communication technology (ICT), including hardware and software; information networks, including the Internet and the World Wide Web; automatic control; and ICT-related computer-aided fields. The Dictionary also lists abbreviated names of relevant organizations, conferences, symposia and workshops. This reference is important for all practitioners and users in the areas mentioned above, and those who consult or write technical material. This Second Edition contains 10,000 new entries, for a total of 33,000.
Download or read book Nanovision written by Colin Milburn and published by Duke University Press. This book was released on 2008-10-28 with total page 293 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dawning era of nanotechnology promises to transform life as we know it. Visionary scientists are engineering materials and devices at the molecular scale that will forever alter the way we think about our technologies, our societies, our bodies, and even reality itself. Colin Milburn argues that the rise of nanotechnology involves a way of seeing that he calls “nanovision.” Trekking across the technoscapes and the dreamscapes of nanotechnology, he elaborates a theory of nanovision, demonstrating that nanotechnology has depended throughout its history on a symbiotic relationship with science fiction. Nanotechnology’s scientific theories, laboratory instruments, and research programs are inextricable from speculative visions, hyperbolic rhetoric, and fictional narratives. Milburn illuminates the practices of nanotechnology by examining an enormous range of cultural artifacts, including scientific research articles, engineering textbooks, laboratory images, popular science writings, novels, comic books, and blockbuster films. In so doing, he reveals connections between the technologies of visualization that have helped inaugurate nano research, such as the scanning tunneling microscope, and the prescient writings of Robert A. Heinlein, James Blish, and Theodore Sturgeon. He delves into fictive and scientific representations of “gray goo,” the nightmare scenario in which autonomous nanobots rise up in rebellion and wreak havoc on the world. He shows that nanoscience and “splatterpunk” novels share a violent aesthetic of disintegration: the biological body is breached and torn asunder only to be refabricated as an assemblage of self-organizing machines. Whether in high-tech laboratories or science fiction stories, nanovision deconstructs the human subject and galvanizes the invention of a posthuman future.
Book Synopsis The Law of Outer Space by : Tanja L. Masson-Zwaan
Download or read book The Law of Outer Space written by Tanja L. Masson-Zwaan and published by BRILL. This book was released on 2010-09-10 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt: Manfred Lachs’ famous treatise on the Law of Outer Space was originally published in 1972, yet it is still a classic and must-read text for space law students today. Issued on the occasion of the 50th anniversary of the International Institute of Space Law, of which Lachs was President, this volume reproduces the original text of Lachs' work in full, with a new preface, introduction and index supplied by the editors.
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