| 1979-1999全球天测与测地VLBI观测资料处理结果与讨论 |
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| 引用本文： | 王广利,钱志瀚. 1979-1999全球天测与测地VLBI观测资料处理结果与讨论[J]. 天文学报, 2000, 41(3): 320-326 |
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| 作者姓名： | 王广利 钱志瀚 |
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| 作者单位： | 1. 中国科学院上海天文台,上海200030
2. 中国科学院国家天文观测中心 |
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| 基金项目： | 国家重大基础研究项目(No，970231003)、国家自然科学基金重大项目(No．19833030)、中国科学院重大项目(No．KJ951-1-304)和国家重点基础研究项目(No．95-13-03-02)等资助 |
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| 摘 要： | 采用国际地民服务（ＩＥＲＳ）１９９６年规范和上海天文台甚长基线干涉测量（ＶＬＢＩ）资料分析软件，对自１９７９年８月以来全球约２９００次天测与测地ＶＩＢＬ实验进行了综合归算，得到６０１颗河外射电源在Ｊ２０００．０的坐标、１０１台站在Ｊ１９９７．０的坐标和运动速度、以及约２０年地地球定向参数序列。与国际相关结果的比较表明，归算结果不存在显著系统差。通过对归算结果的分析，指出目前国际上评估天球参考架局部
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| 关 键 词： | 射电天体测量 VLBI 资料归算 |
| 修稿时间： | 1999-10-13 |
SOLUTION AND DISCUSSION OF GLOBAL ASTROMETRIC AND GEODETIC VLBI DATA (1979-1999) REDUCTION |
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| WANG Guang-Li,QIAN Zhi-Han. SOLUTION AND DISCUSSION OF GLOBAL ASTROMETRIC AND GEODETIC VLBI DATA (1979-1999) REDUCTION[J]. Acta Astronomica Sinica, 2000, 41(3): 320-326 |
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| Authors: | WANG Guang-Li QIAN Zhi-Han |
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| Affiliation: | WANG Guang-Li,QIAN Zhi-Han;(Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 National Astronomical Observatories, Chinese Academy of Sciences) |
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| Abstract: | About 2900 astrometric and geodetic VLBI sessions since August of 1979 are analyzed in this paper with the International Earth Rotation Service 1996 Conventions and the data processing software of Shanghai Observatory. The final results include 601 radio sources with positions at J2000.0,101 stations with positions and velocities at J1997.0 as well as about 20 years' Earth Orientation Parameters. By comparison with related international results, it is shown that there are no significant systematic drifts in our solution, and this justifies the success of this global data reduction. On the basis of an analysis of our solution, it is shown that the presently widely accepted evaluation method of local relative deformations of celestial reference frames is not an objective criterion. |
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| Keywords: | radio astrometry VLBI data reduction |
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