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neutral atmospheric
相关语句
  中性大气
    On the basis of the JPL and GFZ standard inverse algorithm of neutral atmospheric by GPS occultation data, a computation process of neutral atmospheric retrieval in Shanghai Astronomical Observatory (SHAO) was developed.
    结合JPL和GFZ的中性大气标准反演算法,发展了上海天文台中性大气掩星标 准反演算法流程.
短句来源
    THE MAPPING FUNCTION OF THE NEUTRAL ATMOSPHERIC REFRACTION
    中性大气折射的映射函数
短句来源
    The Mapping Function and the Generator Function Theory of Neutral Atmospheric Refraction
    中性大气折射映射函数和大气折射母函数方法
短句来源
    2. On the basis of the standard inverse algorithm for neutral atmospheric of GPS occultation data developed in JPL and GFZ, a computation process of neutral atmospheric retrieval was developed in SHAO.
    2.结合JPL和GFZ的中性大气标准反演算法,独立发展了上海天文台中性大气掩星标准反演算法流程。 对CHAMP观测资料进行中性大气反演,并将反演结果与欧洲中尺度天气预报分析(ECMWF)资料进行比较和统计分析,讨论了CHAMP掩星数据的质量,以及分析了CHAMP掩星数据的观测误差和ECMWF的分析模型误差。
短句来源
    According to influences of the astronomical angular refraction on classical astrometry and requirements of modern space geodesy to neutral atmospheric refractive delay corrections,the reasons why those corrections are not meet the demands of expected accuracy are analyzed,in which the main is that values of the angular refraction can not be determined directly by those methods.
    根据经典天体定位测量受天文大气折射的影响和现代空间大地测量对中性大气折射延迟改正的要求,分析了这些修正没有达到预期精度要求的原因:主要在于不能直接测定天文大气折射;
短句来源
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  neutral atmospheric
The IPHA method as applied to the 162 kHz measurements made at Panská Ves, allows ionospheric and neutral atmospheric parameters to be studied simultaneously and appears to provide reliable and good quality data.
      
Several non-dynamic, scale-invariant, and scale-dependent dynamic subgrid-scale (SGS) models are utilized in large-eddy simulations of shear-driven neutral atmospheric boundary layer (ABL) flows.
      
In its present stage of development the model is based on the numerical integration of neutral atmospheric flow equations, using an energy-dissipation closure scheme and over a domain that may include vegetation layers.
      
High-accuracy large-eddy simulations of neutral atmospheric surface-layer flow over a gapped plant canopy strip have been performed.
      
Three of these formulations are implemented in simulations of a neutral atmospheric boundary layer with different aerodynamic surface roughness.
      
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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 some detail. The mapping functions derived from this method could be used for different atmospheric profiles by means of least square adjustments to the expanding parameters.

在球对称大气模型下,我们导出了与余误差函数形式相联系的中性大气折射改正的母函数,并进一步讨论了它的几种数学展开形式。由此方法建立的映射函数可以对各类大气模型直接进行参数拟合。

On the basis of the JPL and GFZ standard inverse algorithm of neutral atmospheric by GPS occultation data, a computation process of neutral atmospheric retrieval in Shanghai Astronomical Observatory (SHAO) was developed. The retrieved atmospheric profiles from CHAMP data were compared with ECMWF model atmosphere. A very brief discussion was made after comparisons. In conclusion, some future improvements were mentioned.

结合JPL和GFZ的中性大气标准反演算法,发展了上海天文台中性大气掩星标 准反演算法流程.对CHAMP观测资料进行中性大气反演,并将反演结果与ECMWF(the European Center for Medium Range Weather Forecasting)的预报大气数据进行比较. 作为讨论,指出将来的发展方向.

According to influences of the astronomical angular refraction on classical astrometry and requirements of modern space geodesy to neutral atmospheric refractive delay corrections,the reasons why those corrections are not meet the demands of expected accuracy are analyzed,in which the main is that values of the angular refraction can not be determined directly by those methods.Aimed at the dependence of those influences on atmospheric distribution models and the requirement that the corrections should...

According to influences of the astronomical angular refraction on classical astrometry and requirements of modern space geodesy to neutral atmospheric refractive delay corrections,the reasons why those corrections are not meet the demands of expected accuracy are analyzed,in which the main is that values of the angular refraction can not be determined directly by those methods.Aimed at the dependence of those influences on atmospheric distribution models and the requirement that the corrections should be varied with change in observing stations and observational directions,effective ways for improving accuracy of these two kinds of corrections are presented,that is,determining values of the astronomical refraction at different zenith distances in different directions at each station,building refraction models measured in different directions respectively,finding refractivity and parameters of mapping function using measured data,and constructing and adopting refractive delay corrective models varied with change in the stations and the directions.If the new technique is put in practice,in condition of not adopting atmospheric distribution model,the accuracy of the low-altitude refractive delay correction will be improved from present meter level to centimeter level,and the cutoff elevation angle will be reduced to a range of 5°.The possibility of determining values of astronomical refraction in several directions at each station is discussed.

根据经典天体定位测量受天文大气折射的影响和现代空间大地测量对中性大气折射延迟改正的要求,分析了这些修正没有达到预期精度要求的原因:主要在于不能直接测定天文大气折射;文章针对这些影响量对大气分布模型的依赖性,改正值应随着不同的观测站和不同方位而异的要求,提出了提高这两种改正精度的有效途径:在各观测站不同方位的各天顶距,测定天文大气折射值,分别建立不同方位的大气折射实测模型,并利用实测数据,求解出折射率差和映射函数的参数,建立和采用随着观测站、随着方位而异的折射延迟改正模型。这一新方法的实施,将能在避免采用大气分布模型的情况下,把较低高度角的折射延迟改正精度从现在的米级提高到厘米级,并且把截止高度角压缩到5°以内。文章还论述了在各观测站多方向测定天文大气折射值的可能性。

 
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