A model of geometric delay in Space VLBI | |
Liao, Shi-Long1,2; Tang, Zheng-Hong1; Qi, Zhao-Xiang1 | |
刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS |
2014-08-01 | |
卷号 | 14期号:8页码:1029-1036 |
关键词 | astrometry interferometric analytical |
英文摘要 | A model which includes the relativistic effect is derived that can be applied to space very long baseline interferometry (SVLBI) while taking observations of sources at infinite distance. In SVLBI, where one station is on a spacecraft, the length of the baseline and the orbiting station's maximum speed in an elliptical orbit around the Earth is much larger than the ground-based VLBI, which leads to a larger delay and higher delay rate. The delay models inside VLBI correlators are usually expressed as fifth-order polynomials during a limited time interval, which are evaluated by firmware in the correlator and track delays in the interferometer over the limited time interval. The higher SVLBI delay rate requires more accurate polynomial fitting and evaluation, as well as more frequent model updates. |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Astronomy & Astrophysics |
研究领域[WOS] | Astronomy & Astrophysics |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000340698100013 |
内容类型 | 期刊论文 |
源URL | [http://119.78.226.72/handle/331011/16234] |
专题 | 上海天文台_天文技术研究室 |
作者单位 | 1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Liao, Shi-Long,Tang, Zheng-Hong,Qi, Zhao-Xiang. A model of geometric delay in Space VLBI[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2014,14(8):1029-1036. |
APA | Liao, Shi-Long,Tang, Zheng-Hong,&Qi, Zhao-Xiang.(2014).A model of geometric delay in Space VLBI.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,14(8),1029-1036. |
MLA | Liao, Shi-Long,et al."A model of geometric delay in Space VLBI".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 14.8(2014):1029-1036. |
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