[PDF] Geosynchron eBook

Author : Steven J. Goodman
Publisher : Elsevier
Page : 306 pages
File Size : 17,57 MB
Release : 2019-10-05
Category : Science
ISBN : 0128143282

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The GOES-R Series: A New Generation of Geostationary Environmental Satellites introduces the reader to the most significant advance in weather technology in a generation. The world’s new constellation of geostationary operational environmental satellites (GOES) are in the midst of a drastic revolution with their greatly improved capabilities that provide orders of magnitude improvements in spatial, temporal and spectral resolution. Never before have routine observations been possible over such a wide area. Imagine satellite images over the full disk every 10 or 15 minutes and monitoring of severe storms, cyclones, fires and volcanic eruptions on the scale of minutes. Introduces the GOES-R Series, with chapters on each of its new products Provides an overview of how to read new satellite images Includes full-color images and online animations that demonstrate the power of this new technology

Author : Teng Long
Publisher : Springer
Page : 299 pages
File Size : 34,72 MB
Release : 2018-04-20
Category : Technology & Engineering
ISBN : 981107254X

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This book chiefly addresses the analysis and design of geosynchronous synthetic aperture radar (GEO SAR) systems, focusing on the algorithms, analysis, methods used to compensate for ionospheric influences, and validation experiments for Global Navigation Satellite Systems (GNSS). Further, it investigates special problems in the GEO SAR context, such as curved trajectories, the Earth’s rotation, the ‘non-stop-and-go’ model, high-order Doppler parameters, temporal-variant ionospheric errors etc. These studies can also be extended to SAR with very high resolution and long integration time. Given the breadth and depth of its coverage, scientists and engineers in SAR and advanced graduate students in related areas will greatly benefit from this book.

Author : Henry B. Garrett
Publisher :
Page : 44 pages
File Size : 21,34 MB
Release : 1978
Category : Atmospheric models
ISBN :

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A preliminary statistical analysis of the ATS-5 and ATS-6 geosynchronous plasma data has been carried out. Variations in the electron and ion currents and temperatures, as represented by the single Maxwellian component temperatures T(AVG) and T(RMS), are evaluated with respect to local time and geomagnetic activity. The potential on the satellites is similarly evaluated. Results indicate that the geosynchronous plasma cannot be adequately represented by a simple Maxwellian distribution and that, at the very least, a two component Maxwellian is necessary. The electron current and eclipse potential were found to vary strongly with K sub p while the temperatures only varied weakely. Local time variations in temperature and current were observed but these were outweighted by a significant local time variation in satellite potential which peaked near midnight. An explanation of these results is proposed in terms of a simple model of the time evolution of the plasma following an injection. (Author).

Author : Henry Berry Garrett
Publisher :
Page : 52 pages
File Size : 44,57 MB
Release : 1977
Category : Electron distribution
ISBN :

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Although the role of the environment in generating spacecraft potential variations at geosynchronous orbit is well documented, variations in the ambient environment itself have not been well-defined. Similarly, no studies of the environment have attempted an analytic formulation of the various parameters needed to model the spacecraft charging phenomenon. This paper describes the parameters needed to formulate such a model and outlines a systematic procedure for constructing a simple analytic model that includes the effects of local time and geomagnetic activity. Observational data from the ATS- 5 satellite are analyzed using this procedure to give a preliminary analytic description of the geosynchronous environment in the form of a FORTRAN program.

Author : E. G. Mullen
Publisher :
Page : 52 pages
File Size : 15,34 MB
Release : 1982
Category : Electrons
ISBN :

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High-level spacecraft charging events in sunlight are discussed and statistically analyzed to determine environmental parameters critical to charging and the region of space near geosynchronous altitude where charging occurs. Significant levels of spacecraft charging are shown to occur only between 1900 LT and 0900 LT at any altitude or latitude of the SCATHA satellite orbit. High-level charging is shown to occur only during periods when the magnetic activity index is 2+ or greater. Distribution functions of energetic electrons and ions are presented for 3 high-level charging periods on days 114, 241 and 363, 1979. Moments of the distribution functions are determined, and fitting techniques used to derive two-Maxwellian densities and temperatures are discussed. Results are provided in a format usable in satellite design specifications.

Author : Henry Berry Garrett
Publisher :
Page : 24 pages
File Size : 33,60 MB
Release : 1978
Category : Geostationary satellites
ISBN :

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Rapid variations in spacecraft potential are observed on entry and exit from the earth's shadow. Generalized equations, based on elementary plasma probe theory, are developed which make quantitative estimates of these potentials as a function of satellite position in the earth's penumbra, and are compared with data from the ATS-5 and ATS-6 geosynchronous satellites. The agreement between the observations and the predictions results from the approximate constancy of the ratio of the ambient ion to electron current during injection events. Due to the significant size and shape differences of the ATS-5 and ATS-6 satellites, the results are applicable in many space physics situations such as estimating the effects of electron beams on satellite potential and of spacecraft charging on very large space structures. (Author).

Author : Chong-Hung Zee
Publisher : Springer Science & Business Media
Page : 292 pages
File Size : 22,48 MB
Release : 2013-06-29
Category : Science
ISBN : 9400925735

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Geostationary or equatorial synchronous satellites are a daily reminder of our space efforts during the past two decades. The nightly television satellite weather picture, the intercontinental telecommunications of television transmissions and telephone conversations, and the establishrnent of educational programs in remote regions on Earth are constant reminders of the presence of these satellites. As used here, the term 'geo stationary' must be taken loosely because, in the long run, the satellites will not remain 'stationary' with respect to an Earth-fixed reference frame. This results from the fact that these satellites, as is true for all satellites, are incessantly subject to perturbations other than the central-body attraction of the Earth. Among the more predominant pertur bations are: the ellipticity of the Earth's equator, the Sun and Moon, and solar radiation pressure. Higher harmonics of the Earth's potential and tidal effects also influence satellite motion, but they are of second order when compared to the predominant perturbations. This volume deals with the theory of geostationary satellites. It consists of seven chapters. Chapter 1 provides a general discussion including a brief history of geostationary satellites and their practical applications. Chapter 2 describes the Earth's gravitational potential field and the methodology of solving the geostationary satellite problem. Chapter 3 treats the effect of Earth's equatorial ellipticity (triaxiality) on a geostationary satellite. Chapter 4 deals with the effects of the Sun and Moon on the satellite's motion while Chapter 5 presents the combined influences of the Sun, Moon and solar radiation pressure. Chapter 6 describes various station-keeping techniques which may be used to make geostationary satellites practically stationary. Finally, Chapter 7 describes the verification of the theory developed in Chapters 3, 4 and 5 by utilizing the Early Bird synchronous satellite observed data as well as its numerically integrated results.

Author : David Louis Edelman
Publisher : Prometheus Books
Page : 511 pages
File Size : 18,61 MB
Release : 2010-05-01
Category : Fiction
ISBN : 1591028558

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The Defense and Wellness Council is enmeshed in full-scale civil war between Len Borda and the mysterious Magan Kai Lee. Quell has escaped from prison and is stirring up rebellion in the Islands with the aid of a brash young leader named Josiah. Jara and the apprentices of the Surina/Natch MultiReal Fiefcorp still find themselves fighting off legal attacks from their competitors and from Margaret Surina's unscrupulous heirs -- even though MultiReal has completely vanished. The quest for the truth will lead to the edges of civilization, from the tumultuous society of the Pacific Islands to the lawless orbital colony of 49th Heaven; and through the deeps of time, from the hidden agenda of the Surina family to the real truth behind the Autonomous Revolt that devastated humanity hundreds of years ago. Meanwhile, Natch has awakened in a windowless prison with nothing but a haze of memory to clue him in as to how he got there. He's still receiving strange hallucinatory messages from Margaret Surina and the nature of reality is buckling all around him. When the smoke clears, Natch must make the ultimate decision -- whether to save a world that has scorned and discarded him, or to save the only person he has ever loved: himself.