基于频分复用的大规模超导阵列探测器读出关键技术研究

项目名称： 基于频分复用的大规模超导阵列探测器读出关键技术研究

项目编号： No.11503094

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 天文学、地球科学

项目作者： 李升

作者单位： 中国科学院紫金山天文台

项目金额： 23万元

中文摘要： 太赫兹天文成像观测已经成为天文学家进行天体物理学研究的重要手段。目前，提升单个探测器灵敏度已经比较困难，可以通过增加接收机探测器数量的方式来提高观测效率。十多年来，一些阵列接收机如SCUBA，LABOCA等相继被研制并应用于常规天文连续谱成像观测，这些阵列接收机的成功应用标志着射电天文接收机正在从追求单个探测器灵敏度向大规模阵列方向发展。本申请项目即基于新型超导KID阵列探测器及频分复用原理，研究阵列探测器电子学读出系统的关键技术，分别从硬件、内核、软件三个方面进行设计、仿真、验证、分析，并结合系统在小型望远镜上的观测结果，探索适合下一代超大规模阵列接收机系统信号读出的有效方法，为将来南极及空间太赫兹阵列接收机系统的研制打下基础。

中文关键词： 超导；阵列探测器；读出；频分复用

英文摘要： Astronomical observations of terahertz imaging have become the important tools to study the astrophysics for astronomers. It is difficult to increase the sensitivity of a single detector at present. Another way is to enlarge the detector numbers of receiver to improve observation efficiency. During the last decade, some array receivers such as SCUBA, LABACA and so on have been developed and used for routine astronomical continuum imaging observations. These successful applications are the symbol that radio astronomical receiver is changing from pursuing the sensitivity of single detector to large array. This project, which is to study the key technology of the electronic readout system of array detector, is based on the new type superconducting KID array detectors and FDM principle. We will explore an effective method for signal readout of the next generation large scale array receiver by designing, simulating, verifying and analyzing on the aspect of hardware, firmware and software, and by the observation results integrated with a small telescope. This work will lay the foundation of development of the antarctic and space terahertz array receiver system in future.

英文关键词： Superconducting;Array Detectors;Readout;FDM