OmniUV: A Multipurpose Simulation Toolkit for VLBI Observation

OmniUV: A Multipurpose Simulation Toolkit for VLBI Observation
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OmniUV:用于 VLBI 观测的多用途模拟工具包

DOI:
10.3847/1538-3881/ac77f0
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发表时间:
2022-01
期刊:
American Astronomical Society
影响因子:
--
通讯作者:
Xu Zhijun
Xu Zhijun
中科院分区:
其他
文献类型:
--
作者:
Liu Lei;Zheng Weimin;Fu Jian;Xu Zhijun

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我们推出 OmniUV,这是一个用于空间和地面 VLBI 观测的多用途模拟工具包。支持多种VLBI站,包括地(地)固定站、地球轨道站、月球固定站、月球轨道站、月地、地日拉格朗日1、2点等。该工具包的主要功能有:(1)轨迹计算; (2) 基线紫外线计算,考虑每个站点的可用性; (3)给定紫外线分布、光源结构和系统噪声的可见度模拟; (4)图像和光束重建。空间VLBI网络和广域阵列两种场景以完全不同的规模展示了工具包的应用。 OmniUV 是全能紫外线的缩写。我们希望它能够作为一个总体框架,可以轻松地将各种站点纳入其中并进一步扩展功能。该工具包已公开发布。
We present OmniUV, a multi-purpose simulation toolkit for space and ground VLBI observations. It supports various kinds of VLBI stations, including Earth (ground) fixed, Earth orbit, Lunar fixed, Lunar orbit, Moon-Earth and Earth-Sun Lagrange 1 and 2 points, etc. The main functionalities of this toolkit are: (1) Trajectory calculation; (2) Baseline uv calculation, by taking the vailability of each station into account; (3) Visibility simulation for the given uv distribution, source structure and system noise; (4) Image and beam reconstruction. Two scenarios, namely space VLBI network and wide field array, are presented as demonstrations of the toolkit applications in completely different scales. OmniUV is the acronym of Omnipotent UV. We hope it could work as a general framework, in which various kinds of stations could be easily incorporated and the functionalities could be further extended. The toolkit has been made publicly available.
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