Preliminary results of the amplitude retrieval from CHAMP observation data

Details Preliminary results of the amplitude retrieval from CHAMP observation data Preliminary results of the amplitude retrieval from CHAMP observation data

Jan 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005acasn..46...84y&link_type=abstract

Acta Astronomica Sinica, vol. 46, no. 1, p. 84-95

Physics

Optics

1

Astrometry: Earth'S Atmosphere, Artificial Satellites: Gps, Leo, Champ Occultation Amplitude

Scientific paper

Under the assumptions of geometric optics and thin phase screen the retrieval algorithms of amplitude in GPS/LEO occultation technique were listed in this paper. Geometric and physical decay sources producing observed signal amplitude variations were sorted according to their physical mechanisms. Using CHAMP observational data samples, the profiles of atmospheric bending, refractivity, pressure, and temperature were retrieved in tern by the series of signal noise ratio. The results were compared and discussed with that from phase process. The influences of both geometric and physical sources on the atmospheric retrievals were analyzed briefly.

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