Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pabei..23...29l&link_type=abstract
Progress in Astronomy (ISSN 1000-8349), Vol. 23, No. 1, p. 29 - 39 (2005)
Astronomy and Astrophysics
Astronomy
Celestial Mechanics, Gravity Gradiometry, Review, Goce, Gravity Field, Satellite, Tracking
Scientific paper
Current knowledge of the earth's gravity field, as derived from CHAMP and Grace's data, is incomplete, and the determined geoid can not reach the precision required by geophysics and the subjects related to Earth Science. GOCE (Gravity Field and Stead-state Ocean Circulation Explore), which will be launched by ESA in 2006, is the Earth Explorer Gravity Field and Steady-State Ocean Circulation Core Mission satellite based on CHAMP and GRACE. It can determine the geoid with an accuracy of 1 cm and spatial resolution (half wavelength) at length scales between 200 - 80 km. This paper briefly introduced the current gravity satellites' developing status and their limitations. The GOCE satellite's instruments, its scientific objectives and surveying principle, the important applications in geophysics field, etc., are discussed in detail in this paper. Finally, the applications of the data sources which are generated by GOCE and other gravity satellites are conceived in our country.
Feng Chu-Gang
Huang Cheng
Li Ke-Hang
Peng Dong-Ju
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