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Author: Richard J. Anderle
Publisher:
ISBN:
Category : Geodetic satellites
Languages : en
Pages : 47
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Book Description
Observations of artifical earth satellites provide a means of establishing an origin, orientation, scale and control points for a coordinate system. Neither existing data nor future data are likely to provide significant information on the .001'' angle provided data to about .01'' accuracy on the pole position and to possibly a meter on the origin of the system and for control points. The longitude origin is essentially arbitrary. While these accuracies permit acquisition of useful data on tides and polar motion through dynamic analyses, they are inadequate for determination of crustal motion or significant improvement in polar motion. The limitations arise from gravity, drag and radiation forces on the satellites as well as from instrument errors. Improvements in laser equipment and the launch of the dense LAGEOS satellite in an orbit high enough to suppress significant gravity and drag errors will permit determination of crustal motion and more accurate, higher frequency, polar motion. (Modified author abstract).
Author: Richard J. Anderle
Publisher:
ISBN:
Category : Geodetic satellites
Languages : en
Pages : 47
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Book Description
Observations of artifical earth satellites provide a means of establishing an origin, orientation, scale and control points for a coordinate system. Neither existing data nor future data are likely to provide significant information on the .001'' angle provided data to about .01'' accuracy on the pole position and to possibly a meter on the origin of the system and for control points. The longitude origin is essentially arbitrary. While these accuracies permit acquisition of useful data on tides and polar motion through dynamic analyses, they are inadequate for determination of crustal motion or significant improvement in polar motion. The limitations arise from gravity, drag and radiation forces on the satellites as well as from instrument errors. Improvements in laser equipment and the launch of the dense LAGEOS satellite in an orbit high enough to suppress significant gravity and drag errors will permit determination of crustal motion and more accurate, higher frequency, polar motion. (Modified author abstract).
Author:
Publisher:
ISBN:
Category : Astronautics in earth sciences
Languages : en
Pages : 910
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Author:
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ISBN:
Category : Aeronautics
Languages : en
Pages : 602
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: S. Böhme
Publisher: Springer Science & Business Media
ISBN: 3662123045
Category : Science
Languages : en
Pages : 655
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Book Description
Astronomy and Astrophysics Abstracts, which has appeared in semi-annual volumes since 1969, is de voted to the recording, summarizing and indexing of astronomical publications throughout the world. It is prepared under the auspices of the International Astronomical Union (according to a resolution adopted at the 14th General Assembly in 1970). Astronomy and Astrophysics Abstracts aims to present a comprehensive documentation of literature in all fields of astronomy and astrophysics. Every effort will be made to ensure that the averagetime interval between the date of receipt of the original literature and publication ofthe abstracts will not exceed eight months. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user. Volume 17 contains literature published in 1976 and received before August 15, 1976; some older literature which was received late and which is not recorded in earlier volumes is also included. We acknowledge with thanks contributions to this volume by Dr. J. Bouska, who surveyed journals and publications in the Czech languageand supplied us with abstracts in English,and by the Common wealth Scientific and Industrial Research Organization (C.S.I.R.O.), Sydney, for providing titles and abstracts of papers on radio astronomy. We want to acknowledge valuable contributions to this vol ume by Zentralstelle fur Atomkernenergie-Dokumentation, Leopoldshafen, which supported our ab stracting service by sending us retrospective literature searches.
Author:
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ISBN:
Category : Government publications
Languages : en
Pages : 2834
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Author: Barbara Kołaczek
Publisher:
ISBN:
Category : Coordinates
Languages : en
Pages : 512
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Author:
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ISBN:
Category : Geodesy
Languages : en
Pages : 668
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Author: Environmental Science Information Center. Library and Information Services Division
Publisher:
ISBN:
Category : Book catalogs
Languages : en
Pages : 444
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Author: Environmental Science Information Center. Library and Information Services Division
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ISBN:
Category :
Languages : en
Pages : 444
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Author: Siegfried Böhme
Publisher: Springer Science & Business Media
ISBN: 3662123010
Category : Science
Languages : en
Pages : 757
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