论文标题
用于空间VLBI观察的卫星轨道优化
The optimization of satellite orbit for Space-VLBI observation
论文作者
论文摘要
通过将一个或多个望远镜发送到太空中，太空VLBI（SVLBI）能够达到更高的角度分辨率，因此是VLBI技术的趋势。对于SVLBI计划，卫星轨道的设计对于计划的观察成功起着重要作用。在本文中，我们介绍了轨道优化方案，以促进卫星轨道的设计以进行SVLBI观察。为了实现这一目标，我们将$ UV $覆盖范围用度量索引来表征，并通过查找相应的轨道配置来最大程度地减少它。这样，卫星轨道的设计将转换为优化问题。我们可以证明，通过适当的全局最小化方法，可以在合理的时间内找到最佳的轨道配置。除此之外，我们证明该方案可用于安排SVLBI观察。
By sending one or more telescopes into space, Space-VLBI (SVLBI) is able to achieve even higher angular resolution and is therefore the trend of the VLBI technique. For SVLBI program, the design of satellite orbits plays an important role for the success of planned observation. In this paper, we present our orbit optimization scheme, so as to facilitate the design of satellite orbit for SVLBI observation. To achieve that, we characterize the $uv$ coverage with a measure index and minimize it by finding out the corresponding orbit configuration. In this way, the design of satellite orbit is converted to an optimization problem. We can prove that, with appropriate global minimization method, the best orbit configuration can be found within the reasonable time. Besides that, we demonstrate this scheme can be used for the scheduling of SVLBI observations.
