Selected applications of satelite geodesy in geosciences

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F16%3A86098998" target="_blank" >RIV/61989100:27350/16:86098998 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Selected applications of satelite geodesy in geosciences

Original language description

The orbits of first Sputniks (1957) and Vanguards were analyzed and the Earth's polar flattening has been determined. This can be considered as the beginning of space geodesy. Since that time, precision and quality of the orbit determination and related, subsequent knowledge about the Earth's gravitational field and the shape of the Earth (the geoid) increased more than remarkably. First optical observations of the Earth's artificial satellites, performed with special photographic cameras, led to about 100 m precision in the orbit determination. Satellite laser ranging improved it 10 times and more, now by the next three orders, to a centimetre level for majority of satellites. Satellite altimetry and satellite-to-satellite tracking (between individual satellites) brought an actual revolution in the precision and worldwide coverage by the observations. Doppler and GPS (GNSS) data are also very helpful. Finally, we have now available direct measurements of the second derivatives of the disturbing gravitational potential by means of space gradiometer (combination of microaccelerometers) on board of the satellite GOCE. All these observations, their variety, precision, and coverage resulted not only in an increase of our knowledge about the Earth's gravity field, but have more and more applications in various specializations like oceanography, geophysics, geology, geomorphology, etc. In this book we first recall the role of orbit resonances of the Earth's artificial satellites in the gravity field determination in the past as well as today (Sect. 2). It is surprising and unbelievable how the topic of "resonance" lived together with space geodesy nearly since its beginning and is alive still now, for example with the intentional fine orbit tuning of GOGE, with one common goal unchanged: the effective gravity field determination.

Czech name

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Czech description

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Type

B - Specialist book

CEP classification

DE - Earth magnetism, geodesy, geography

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

ISBN

978-80-553-2548-4

Number of pages

105

Publisher name

Technical University of Košice, Slovak Republic

Place of publication

Košice, Slovak Republic

UT code for WoS book

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