用于大地天文測(cè)量的恒星視位置算法研究
發(fā)布時(shí)間:2018-05-30 02:29
本文選題:恒星視位置計(jì)算 + 大地天文測(cè)量; 參考:《西安科技大學(xué)》2014年碩士論文
【摘要】:盡管大地天文測(cè)量基本被全球衛(wèi)星定位測(cè)量技術(shù)所替代,但在測(cè)繪、國(guó)防和航空航天領(lǐng)域還發(fā)揮著不可替代的作用,諸如天文方位角和垂線偏差測(cè)量。大地天文測(cè)量數(shù)據(jù)處理時(shí),需要知道所觀測(cè)恒星的視位置,并通過(guò)恒星的視位置來(lái)求解地面點(diǎn)的天文經(jīng)度、天文緯度以及天文方位角。過(guò)去傳統(tǒng)的做法是通過(guò)查找天文年歷的方法得到恒星的視位置,但是這種方法需要攜帶天文年歷,無(wú)法快速獲知恒星的視位置,又非常不經(jīng)濟(jì),因此需要研究滿足大地天文測(cè)量的恒星視位置實(shí)用算法和適用計(jì)算機(jī)計(jì)算的模型。開(kāi)發(fā)相應(yīng)的計(jì)算恒星視位置的軟件,無(wú)疑是最有效的途徑。 本文對(duì)恒星視位置的算法進(jìn)行了具體研究,主要的工作包括: (1)本文介紹了大地天文測(cè)量的發(fā)展及其應(yīng)用,以及在大地天文測(cè)量中經(jīng)常使用的坐標(biāo)系統(tǒng)和時(shí)間系統(tǒng)。 (2)重點(diǎn)研究了對(duì)恒星視位置產(chǎn)生影響的視差改正、光行差改正、歲差和章動(dòng)改正以及自行改正模型,給出了適合計(jì)算機(jī)計(jì)算的算法。 (3)在研究了各種改正模型的基礎(chǔ)上,在VS2008開(kāi)發(fā)環(huán)境下,使用C++語(yǔ)言,開(kāi)發(fā)出了恒星視位置的計(jì)算軟件。并使用軟件計(jì)算恒星的視位置與天文年歷進(jìn)行對(duì)比,以驗(yàn)證其精度是否滿足要求。 (4)最后在所做軟件的基礎(chǔ)上,分析了軟件的不足,,提出了對(duì)軟件進(jìn)行改進(jìn)的方法。
[Abstract]:Although geodetic astronomical surveying is basically replaced by GPS technology, it plays an irreplaceable role in mapping, national defense and aerospace fields, such as astronomical azimuth and vertical deviation measurement. When processing geodetic astronomical data, we need to know the apparent position of the observed star, and solve the astronomical longitude, astronomical latitude and astronomical azimuth of the ground point by the apparent position of the star. In the past, the traditional method was to find out the apparent position of a star by looking up the almanac, but this method needed to carry an almanac, it was impossible to quickly determine the apparent position of the star, and it was very uneconomical. Therefore, it is necessary to study the practical algorithm of star apparent position and the model of computer calculation which can satisfy geodetic astronomical survey. Developing corresponding software to calculate star apparent position is undoubtedly the most effective way. In this paper, the algorithm of star apparent position is studied in detail. The main work includes: This paper introduces the development and application of geodetic astronomical survey and the coordinate system and time system which are often used in geodetic astronomical survey. 2) the parallax correction, optical line correction, precession and nutation correction and self-correction model which affect the apparent position of the star are studied emphatically, and the algorithms suitable for computer calculation are given. Based on the study of various correction models, a software for calculating the apparent position of stars is developed by using C language in the VS2008 development environment. The software is used to calculate the apparent position of stars and the astronomical calendar to verify whether the accuracy meets the requirements. Finally, on the basis of the software, the deficiency of the software is analyzed, and the method to improve the software is put forward.
【學(xué)位授予單位】:西安科技大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2014
【分類號(hào)】:P128.1
【參考文獻(xiàn)】
相關(guān)期刊論文 前3條
1 張捍衛(wèi),許厚澤,王愛(ài)生;天球參考系的基本理論和方法研究進(jìn)展[J];測(cè)繪科學(xué);2005年02期
2 周慶勇;杜蘭;馬高鋒;劉曉剛;;天體視位置計(jì)算研究[J];測(cè)繪信息與工程;2010年03期
3 王安國(guó),賈傳熒,孫鵬;航用恒星視位置高精度計(jì)算[J];交通運(yùn)輸工程學(xué)報(bào);2004年04期
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