Statistics – Computation
Scientific paper
Feb 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004acasn..45...68h&link_type=abstract
Acta Astronomica Sinica, vol. 45, no. 1, p. 68-78
Statistics
Computation
1
Astrometry, Atmospheric Refraction, Mapping Function, Standard Atmosphere
Scientific paper
With the development of the modern space techniques, the errors of atmospheric refractive delay has become one of the main keys in improving computation accuracy. In order to reduce the influence of the selection of atmospheric profile on the mapping function of atmospheric refractive delay, the adopted atmospheric profile has gradually changed from theoretical atmosphere models (Marini 1972, Davis et al. 1985, Yan and Ping 1995) to radiosonde atmospheric profiles (Herring 1992, Niell 1996, Mendes et al. 2002). Incorporated with two representative radiosonde stations data, it has compared the mapping functions from the Standard Atmosphere with that from radiosonde data ray-tracking technique, and assessed the reliability of the mapping function from the Standard Atmosphere. A brief discussion on the choice of meteorological and geophysical parameters has been made by simulation computations.
Guo Pengcheng
Hong Zhen-Jie
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