首页> 外文期刊>Journal of Geodesy >Conventions on thermal expansion modelling of radio telescopes for geodetic and astrometric VLBI
【24h】

Conventions on thermal expansion modelling of radio telescopes for geodetic and astrometric VLBI

机译:大地和天文VLBI射电望远镜热膨胀建模公约

获取原文
获取原文并翻译 | 示例
           

摘要

Thermal expansion of radio telescopes has long been recognized as an effect which cannot be neglected in geodetic and astrometric VLBI data analysis if millimeter accuracy is desired. In this article, the author documents the conventions which are being set by the International VLBI Service for Geodesy and Astrometry (IVS) for a consistent modelling of this effect in its routine product generation. For the largest telescopes, the annual cycle of thermal expansion may change the height of the VLBI reference point by as much as 20 mm. However, for telescopes which are used in present-day IVS operations, the variations rather range from 4 to 6 mm.
机译:长期以来,人们一直认为射电望远镜的热膨胀是一种影响,如果需要毫米精度,则在大地测量和天文VLBI数据分析中不能忽视。在本文中,作者记录了国际VLBI大地测量与星象测量服务(IVS)设置的惯例,以便在常规产品生产中对此效果进行一致的建模。对于最大的望远镜,每年的热膨胀周期可能会将VLBI参考点的高度改变多达20毫米。但是,对于当今IVS操作中使用的望远镜,其变化范围为4到6 mm。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号