發(fā)布時(shí)間：2018-07-08 17:07

  本文選題：天體測(cè)量學(xué) + 星表　； 參考：《天文學(xué)報(bào)》2014年05期

【摘要】：中天觀測(cè)數(shù)據(jù)在建立太陽(yáng)系高精度行星歷表時(shí)具有重要作用.在處理由JPL(Jet Propulsion Laboratory)以及IMCCE(Institut De Mecanique Celeste Et De Calcul Des Ephemerides)提供的中天數(shù)據(jù)時(shí)發(fā)現(xiàn),有若干組數(shù)據(jù)的參考星表沒(méi)有被明確指出。對(duì)于這些信息不完整的數(shù)據(jù),無(wú)從改正數(shù)據(jù)由參考星表而引起的系統(tǒng)差。課題研究的主要目的是利用DE421歷表確定存在缺陷的這類觀測(cè)數(shù)據(jù)的參考星表。通過(guò)DE421給出行星在GCRS(Geocentric Celestial Reference System)中的相應(yīng)位置,并把此位置轉(zhuǎn)換到參考假定的參考星表時(shí)行星的理論視位置。通過(guò)引入的兩個(gè)統(tǒng)計(jì)量分析原始數(shù)據(jù)與理論位置的差異顯著性,檢驗(yàn)假定的數(shù)據(jù)參考星表是否恰當(dāng).結(jié)果顯示,此方法能夠有效區(qū)分?jǐn)?shù)據(jù)的參考星表,能夠確定信息不完整的數(shù)據(jù)組缺少的參考星表。最后,所有中天數(shù)據(jù)被轉(zhuǎn)換到GCRS坐標(biāo)系,以便在歷表研制中使用。
[Abstract]:The medium-sky observation data play an important role in the establishment of the solar system's high precision planetary ephemeris. In processing the medium-sky data provided by JPL (Jet Propulsion Laboratory) and IMCCE (Institut de Mecanique Celeste et de Calcul des Ephemerides), it is found that there are several groups of data whose reference catalogs are not clearly indicated. For incomplete data, there is no way to correct the system error caused by the reference catalog. The main purpose of this paper is to use DE421 calendar to determine the reference catalogue of this kind of observation data. The corresponding position of the planet in GCRS (Geocentric Celestial reference system) is given by DE421, and the theoretical apparent position of the planet is converted to the assumed reference catalog. By analyzing the significance of the difference between the original data and the theoretical position, the proposed two statistics are used to test the appropriateness of the assumed reference catalog. The results show that this method can effectively distinguish the reference catalog of the data, and can determine the missing reference catalog of the incomplete data set. Finally, all medium-day data are converted to GCRS coordinates for use in calendar development.
【作者單位】： 中國(guó)科學(xué)院紫金山天文臺(tái);中國(guó)科學(xué)院大學(xué);
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(11178006)資助
【分類號(hào)】：P114

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