CGCS2000的启用对天文定位定向的影响研究

发布时间：2018-02-14 18:27

本文关键词： 天文定位定向视位置星表历表岁差章动 EOP参数精度　出处：《解放军信息工程大学》2013年硕士论文　论文类型：学位论文

【摘要】：基于CGCS2000的启用，天文测量采用新的测量系统和测量方法，与天文定位定向相关的各种模型参数也都产生了相应变化，论文详细研究了这些变化对天文定位定向的影响。论文主要工作如下： 1.研究了与天文定位定向有关的时间系统及坐标系统，并清楚地给出了各种时间以及各坐标系之间的转换关系；介绍了天文定位定向的方法理论，给出了严格的天体视位置的矢量计算方法。 2.对JPL历表进行了介绍，，详细比较了历表对天体视位置的影响；对不同历表下，利用恒星进行天文定向、测日定向、测月定向、以及利用行星进行天文定向进行了详细的比较分析。 3.对HIP星表进行了历元转换，并编制了适合天文定位定向使用的HIP2000星表；对星表平位置及视位置进行了比较，对不同的天文常数系统进行了介绍和分析。 4.对不同星表系统下，塔尔格特法测定纬度、津格尔法测定经度以及多星近似等高法同时测定经纬度进行了详细的比较分析；对任意性定向和北极星定向进行了比较分析 5.研究了岁差章动对天体位置的影响，对不同的岁差章动模型进行了比较分析；对GCRS到ITRS的转换模型和转换方法进行了介绍和比较，并比较分析了不同模型方法对天文定位定向的影响。 6.研究了日长预报和极移预报对经纬度和方位角的影响，计算分析了日长预报误差和极移预报误差对天文定位定向的影响；介绍了天文定位定向中使用的极移系统，并比较分析了不同极移系统对天文定位定向的影响。 7.研究计算了视恒星参考架之间的关系，对实际的测量结果进行了比较分析。
[Abstract]:Based on the introduction of CGCS2000, new measurement systems and methods are used in astronomical measurement, and various model parameters related to astronomical positioning and orientation are also changed accordingly. The influence of these changes on astronomical positioning and orientation is studied in detail. The main work of this thesis is as follows:. 1. The time system and coordinate system related to the orientation of astronomical positioning are studied, and the conversion relations between different time and coordinate systems are clearly given, and the method theory of the orientation of astronomical positioning is introduced. A strict vector method for calculating the apparent position of celestial bodies is presented. 2. The JPL altimeter is introduced, and the influence of the altimeter on the apparent position of the celestial body is compared in detail, and the astronomical orientation, the solar orientation and the lunar orientation are carried out under the different ephemeris. In addition, a detailed comparison and analysis of the astronomical orientation of the planets is carried out. 3. The epoch conversion of HIP catalogue is carried out, and the HIP2000 catalog suitable for astronomical orientation is worked out, the horizontal and apparent positions of the catalog are compared, and the different astronomical constant systems are introduced and analyzed. 4. The latitude determination by Targett method, longitude determination by Zinger method and simultaneous longitude and latitude determination by multi-star approximation are compared and analyzed in detail, and the arbitrary orientation and the North Star orientation are compared and analyzed. 5. The influence of precession nutation on the position of celestial bodies is studied, and the different precession nutation models are compared and analyzed, and the conversion model and conversion methods from GCRS to ITRS are introduced and compared. The effects of different model methods on astronomical positioning and orientation are compared and analyzed. 6. The effects of day length forecast and pole shift prediction on longitude, latitude and azimuth angle are studied, the influence of day length prediction error and polar motion prediction error on astronomical positioning orientation is calculated and analyzed, and the polar shift system used in astronomical positioning orientation is introduced. The effects of different polar motion systems on astronomical positioning and orientation are compared and analyzed. 7. The relation between the apparent star reference frame is calculated and the actual measurement results are compared and analyzed.
【学位授予单位】：解放军信息工程大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P128.4

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