论文标题
用衍射的几何理论对地面MM波长望远镜进行建模
Modeling sidelobe response for ground-based mm-wavelength telescopes with the geometrical theory of diffraction
论文作者
论文摘要
准确的光学建模对于研究宇宙微波背景（CMB）的电流和下一代实验的设计和表征很重要。几何光学（GO）无法建模衍射效应。在这项工作中，我们讨论了两种结合衍射，物理光学（PO）和衍射理论（GTD）的方法。我们模拟了地面两透镜折射设计的光学响应，该设计被带有时间转换模拟的接地屏幕屏蔽。特别是，我们使用GTD来确定折射率的前驱者的设计与与地面屏幕相互作用引起的旁观者之间的相互作用。
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.
