论文标题
Radio Mid Radio望远镜，平方公里阵列的单像素饲料包：概述
MID-Radio Telescope, Single Pixel Feed Packages for the Square Kilometre Array: An Overview
论文作者
论文摘要
平方公里阵列（SKA）项目是一项国际努力，旨在建立世界上最大的射电望远镜，从而以前所未有的细节和调查速度实现科学。该项目跨越了十年，现在正处于成熟阶段，准备进入建筑和集成阶段。在完全部署的状态下，中型距离由安装在卡鲁沙漠（南非）无线电安静区域中的格里高利天线（南非）的直径150公里的偏移阵列组成。每个天线都配备了三个饲料包，这些饲料包由馈送索引平台放在子反射器焦点中。总观测带宽（0.35-15.4GHz）分为七个频段。频段1（0.35-1.05GHz）和带2（0.95-1.76GHz）作为单个进料包实施。将其余的五个频段（3、4、5a，5b和6乐队）组合成一个饲料包。最初，只有5A（4.6-8.5GHz）和5B（8.3-15.4GHz）的频段。本文概述了每个饲料包的设计，测试和集成以及项目和科学目标，时间表和建筑途径的最新进展。
The Square Kilometre Array (SKA) project is an international effort to build the world s largest radio telescope, enabling science with unprecedented detail and survey speed. The project spans over a decade and is now at a mature stage, ready to enter the construction and integration phase. In the fully deployed state, the MID-Telescope consists of a 150-km diameter array of offset Gregorian antennas installed in the radio quiet zone of the Karoo desert (South Africa). Each antenna is equipped with three feed packages, that are precision positioned in the sub-reflector focus by a feed indexer platform. The total observational bandwidth (0.35-15.4GHz) is segmented into seven bands. Band 1 (0.35-1.05GHz) and Band 2 (0.95-1.76GHz) are implemented as individual feed packages. The remaining five bands (Bands 3, 4, 5a, 5b, and 6) are combined in a single feed package. Initially only Band 5a (4.6-8.5GHz) and Band 5b (8.3-15.4GHz) will be installed. This paper provides an overview of recent progress on design, test and integration of each feed package as well as project and science goals, timeline and path to construction.
