| VLBI中性大气折射延迟的研究进展——映射函数的改正模型 |
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| 引用本文： | 张捍卫,郑勇,马高峰.VLBI中性大气折射延迟的研究进展——映射函数的改正模型[J].测绘科学,2003,28(4):22-26. |
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| 作者姓名： | 张捍卫 郑勇 马高峰 |
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| 作者单位： | 1. 中国科学院测量与地球物理研究所,武汉,430077
2. 郑州信息工程大学测绘学院大地系,郑州,450052 |
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| 基金项目： | 国家自然科学基金，国家自然科学基金，40174002，40125013，， |
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| 摘 要： | 大气传播延迟是空间大地测量技术的主要误差源之一。在射电波段中性大气延迟的影响可从几米到几十米变化 ,即使通过目前某些模型的修正 ,也不能完全消除大气的影响 ,特别是湿大气部分由于变化随机性强 ,很难用模型估计。本文研究了在球对称大气模式下 ,与余误差函数形式相联系的中性大气折射延迟的母函数 ,讨论了与其有关的一些展开式 ,并对各种映射函数进行了比较。
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| 关 键 词： | 中性大气折射延迟 映射函数 母函数 大气折射率 |
| 文章编号： | 1009-2307(2003)04-0022-05 |
| 修稿时间： | 2003年1月20日 |
Research progress on the neutral atmospheric refraction delays for VLBI─correction model of the mapping function |
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| ZHANG Han-wei,ZHENG Yong,MAO Gao-feng.Research progress on the neutral atmospheric refraction delays for VLBI─correction model of the mapping function[J].Science of Surveying and Mapping,2003,28(4):22-26. |
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| Authors: | ZHANG Han-wei ZHENG Yong MAO Gao-feng |
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| Institution: | ZHANG Han-wei~1,ZHENG Yong~2,MAO Gao-feng~2 |
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| Abstract: | In Space Geodesy technology.One of the main error sources is atmospheric transmitting delay. The influence of neutral refraction delays ranges from a few meters to a few decameters in the radio wave band. It cannot be eliminated absolutely even through corrections of model at present, especially the part of damp atmospheric refraction in case of its strong randomness. Under spherical symmetric atmospheric profiles, the generating function of neutral atmospheric refraction corrections, which related to the complementary error function has been introduced in this paper,. The mathematical expressions of the generating function has also been discussed in detail. Simultaneously, diversified mapping functions are compared in this paper. |
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| Keywords: | neutral atmospheric refraction mapping function generating function refractive index |
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