Determining the Astronomical Refraction and Building the Radio Wave Refractive Delay Model Measured(Ⅵ)——Acquisition of Instantaneous Refractions and Refractivity

TIE Qiong-xian; ZHANG Han-wei; LI Bin-hua; YANG Lei; MAO Wei

Astronomical Research and Technology > 2005 > 2(4): 272-277.

TIE Qiong-xian, ZHANG Han-wei, LI Bin-hua, YANG Lei, MAO Wei. Determining the Astronomical Refraction and Building the Radio Wave Refractive Delay Model Measured(Ⅵ)——Acquisition of Instantaneous Refractions and Refractivity[J]. Astronomical Research and Technology, 2005, 2(4): 272-277.

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Determining the Astronomical Refraction and Building the Radio Wave Refractive Delay Model Measured(Ⅵ)——Acquisition of Instantaneous Refractions and Refractivity

1.
National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences, Kunming 650011, China
2.
Kunming University of Science and Technology, Kunming 650051, China

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Received Date: May 26, 2005
Revised Date: July 12, 2005
Published Date: October 14, 2005

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Abstract

Abstract

According to the principle of determining the astronomical refraction, the way to obtain measured values of instantaneous refraction by corresponding observational data is described. Some particular demands on this data-processing are emphasized specially from the relationship between various measured values and the final result. The treatments for correcting the measured refractions according to wavelengths of the observational stars and for building measured refractive delay corrective models are described. Requirements of the corrective model to distribution of the measured values of the refraction are analyzed, and a distribution model of observational data dense with increase in zenith distance is presented.
- true zenith distance,
- apparent zenith distance,
- observational program,
- corrective model

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