本文選題：天體測(cè)量學(xué) + 參考架�。� 參考：《天文學(xué)報(bào)》2016年04期

【摘要】：在描述不同參考架轉(zhuǎn)換參數(shù)估計(jì)方法的基礎(chǔ)上,利用太陽系行星歷表資料估計(jì)了近代不同DE(Development Ephemeris)歷表之間的轉(zhuǎn)換參數(shù);利用脈沖星計(jì)時(shí)觀測(cè)與VLBI(Very Long Baseline Interferometry)技術(shù)觀測(cè)得到的毫秒脈沖星位置資料,估計(jì)了基于DE歷表的動(dòng)力學(xué)參考架與河外射電源參考架(ICRF)之間的轉(zhuǎn)換參數(shù).給出的不同參考架之間轉(zhuǎn)換參數(shù)包括旋轉(zhuǎn)矩陣的3個(gè)旋轉(zhuǎn)角及其隨時(shí)間的變化率,參考?xì)v元為MJD51545.結(jié)果表明:DE200到DE405歷表轉(zhuǎn)換參數(shù)的旋轉(zhuǎn)角最大絕對(duì)值為13 mas,其隨時(shí)間變化率為-0.0007 mas/d.DE414到DE421歷表轉(zhuǎn)換參數(shù)的3個(gè)旋轉(zhuǎn)角的絕對(duì)值均小于0.1 mas.估計(jì)得到的DE421到ICRF轉(zhuǎn)換參數(shù)的旋轉(zhuǎn)角最大絕對(duì)值為3 mas,旋轉(zhuǎn)角隨時(shí)間變化率也是必須計(jì)及的.
[Abstract]:On the basis of describing the estimation methods of conversion parameters of different reference frames, the conversion parameters among different DED ephemeris in modern times are estimated by using the data of the planetary ephemeris of the solar system. The conversion parameters between the dynamic reference frame based on DE ephemeris and the ICRFF of extragalactic radio source are estimated by using the position data of millisecond pulsars obtained from pulsar timing observations and VLBII-Very long baseline interferometrics. The conversion parameters between different reference frames include three rotation angles of the rotation matrix and their rate of change with time. The reference epoch is MJD51545. The results show that the maximum absolute value of rotation angle of the conversion parameters from: DE200 to DE405 is 13 mas. and the rate of change with time is -0.0007 mas-d. DE414 to DE421. The absolute values of the three rotation angles of the conversion parameters are all less than 0.1 masa. The maximum absolute value of rotation angle of DE421 to ICRF is estimated to be 3 mass. the rate of rotation angle with time must also be taken into account.
【作者單位】： 中國科學(xué)院國家授時(shí)中心;中國科學(xué)院時(shí)間頻率基準(zhǔn)重點(diǎn)實(shí)驗(yàn)室;中國科學(xué)院大學(xué);西安科技大學(xué)應(yīng)用物理系;
【基金】：國家自然科學(xué)基金項(xiàng)目(11103024,11373028,11403030,U1531112) 中國科學(xué)院“西部之光”青年學(xué)者A項(xiàng)目資助
【分類號(hào)】：P12

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本文編號(hào)：1995360