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Author: Martha Mejía-Kaiser Publisher: BRILL ISBN: 900441102X Category : Law Languages : en Pages : 502
Book Description
The Geostationary Ring: Practice and Law by Martha Mejía-Kaiser addresses numerous physical aspects of this highly sought-after orbital region and analyses in unprecedented detail the evolution of its use, coordination and related disputes and efforts to keep it operational by clearing it of space debris.
Author: Martha Mejía-Kaiser Publisher: BRILL ISBN: 900441102X Category : Law Languages : en Pages : 502
Book Description
The Geostationary Ring: Practice and Law by Martha Mejía-Kaiser addresses numerous physical aspects of this highly sought-after orbital region and analyses in unprecedented detail the evolution of its use, coordination and related disputes and efforts to keep it operational by clearing it of space debris.
Author: Source Wikipedia Publisher: University-Press.org ISBN: 9781230525082 Category : Languages : en Pages : 26
Book Description
Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Pages: 24. Chapters: Beta angle, Geocentric orbit, Geopotential model, Geostationary orbit, Geostationary ring, Geostationary transfer orbit, Geosynchronous orbit, Graveyard orbit, Highly elliptical orbit, High Earth orbit, Low Earth orbit, Man-made structures visible from space, Medium Earth orbit, Molniya orbit, Near-equatorial orbit, Orbital arc, Orbital station-keeping, Semi-synchronous orbit, Sun-synchronous orbit, Tundra orbit. Excerpt: In geophysics, a geopotential model is the theoretical analysis of measuring and calculating the effects of the Earth's gravitational field. Diagram of two masses attracting one anotherNewton's law of universal gravitation states that the gravitational force F acting between two point masses m1 and m2 with centre of mass separation r is given by where G is the gravitational constant and r is the radial unit vector. For an object of continuous mass distribution, each mass element dm can be treated as a point mass, so the volume integral over the extent of the object gives: with corresponding gravitational potential where = (x, y, z) is the mass density at the volume element and of the direction from the volume element to the point mass. In the special case of a sphere with a spherically symmetric mass density then = (s), i.e. density depends only on the radial distance These integrals can be evaluated analytically. This is the shell theorem saying that in this case: with corresponding potential where M = V (s)dxdydz is the total mass of the sphere. In reality the shape of the Earth is not exactly spherical, mainly because of its rotation around the polar axis that makes its shape slightly oblate. If this shape would have been perfectly known together with the exact mass density = (x, y, z) the integrals (1) and (2) could have been evaluated with numerical methods to find a more...
Author: Herbert J. Kramer Publisher: Springer ISBN: 3642562949 Category : Technology & Engineering Languages : en Pages : 1509
Book Description
This book is about spaceborne missions and instruments. In addition, surveys of airborne missions and of campaigns can be found on the accompanying CD-ROM in pdf-format. Compared with the 3rd edition the spaceborne part grew from about 300 to 1000 pages. The complete text - including the electronic-only chapters - contains more than 1900 pages. New chapters treat the history of Earth observation and university missions. The number of commercial Earth imaging missions has grown significantly. A chapter contains reference data and definitions. Extensive appendices provide a comprehensive glossary, acronyms and abbreviations and an index of sensors. An effort has been made to present the information in context, to point out relationships and interconnections. The book may serve as a reference and guide to all involved in the various national and international space programs: researchers and managers, service providers and data users, teachers and students.
Author: National Research Council Publisher: National Academies Press ISBN: 0309051258 Category : Science Languages : en Pages : 225
Book Description
Since the beginning of space flight, the collision hazard in Earth orbit has increased as the number of artificial objects orbiting the Earth has grown. Spacecraft performing communications, navigation, scientific, and other missions now share Earth orbit with spent rocket bodies, nonfunctional spacecraft, fragments from spacecraft breakups, and other debris created as a byproduct of space operations. Orbital Debris examines the methods we can use to characterize orbital debris, estimates the magnitude of the debris population, and assesses the hazard that this population poses to spacecraft. Potential methods to protect spacecraft are explored. The report also takes a close look at the projected future growth in the debris population and evaluates approaches to reducing that growth. Orbital Debris offers clear recommendations for targeted research on the debris population, for methods to improve the protection of spacecraft, on methods to reduce the creation of debris in the future, and much more.
Author: Steve Brown Publisher: Taylor & Francis ISBN: 1351787063 Category : Architecture Languages : en Pages : 646
Book Description
Cultural landscapes, which in the field of heritage studies and practice relates to caring for and safeguarding heritage landscapes, is a concept embedded in contemporary conservation. Heritage conservation has shifted from an historical focus on buildings, city centres, and archaeological sites to encompass progressively more diverse forms of heritage and increasingly larger geographic areas, embracing both rural and urban landscapes. While the origin of the idea of cultural landscapes can be traced to the late-19th century Euro-American scholarship, it came to global attention after 1992 following its adoption as a category of ‘site’ by the UNESCO World Heritage Committee. Today, cultural landscape practice has become increasingly complex given the expansion of the values and meanings of heritage, the influence of environmental challenges such as human induced climate change, technological advancements, and the need to better understand and interpret human connections to place and landscapes. The aim of this handbook is to strike a balance between theory and practice, which we see as inseparable, while also seeking to achieve a geographical spread, disciplinary diversity and perspectives, and a mix of authors from academic, practitioner, management, and community backgrounds.
Author: Martha Mejía-Kaiser
Author: Martha Mejía-Kaiser
Author: Martin Hechler
Author: Source Wikipedia
Author: Herbert J. Kramer
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Author: Ross T. McNutt
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Author: National Research Council
Author: Steve Brown