用几何衍射理论模拟地基毫米波望远镜的旁瓣响应
Modeling sidelobe response for ground-based mm-wavelength telescopes with the geometrical theory of diffraction
摘要：
精确的光学模型对于当前和下一代研究宇宙微波背景（CMB）的实验设计和表征是非常重要的。几何光学（GO）无法对衍射效应进行建模。在这项工作中，我们讨论了两种方法，将衍射，物理光学（PO）和衍射的几何理论（GTD）。我们模拟了光学响应的地基双透镜折射设计屏蔽的地面屏幕与时间反演模拟。特别是，我们使用几何绕射理论来确定折射器的前挡板的设计和与地面屏幕相互作用所造成的旁瓣之间的相互作用。
英文摘要：
Accurate optical modeling is important for the design and characterisation of current and next-generation experiments studying the Cosmic Microwave Background (CMB). Geometrical Optics (GO) cannot model diffractive effects. In this work, we discuss two methods that incorporate diffraction, Physical Optics (PO) and the Geometrical Theory of Diffraction (GTD). We simulate the optical response of a ground-based two-lens refractor design shielded by a ground screen with time-reversed simulations. In particular, we use GTD to determine the interplay between the design of the refractor's forebaffle and the sidelobes caused by interaction with the ground screen.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
