REACH 全球 21 厘米信号实验的接收机设计
天体物理仪器与方法
2025-01-22 v3
摘要
我们详述了为实现 21 厘米中性氢线测量而设计的 REACH 辐射计系统。内容包括辐射计架构与端到端系统仿真，并讨论了高度可校准系统开发中固有的挑战。随后，我们基于利用过约束最小二乘法计算噪声波参数分享了实验室结果，在定制源上积分五小时达到了 80 mK 的校准均方根误差，该定制源阻抗与野外所用天线相当。因此，本文记录了 2022 年 12 月于剑桥在发往南非之前的校准器与数据分析状态。
引用
@article{arxiv.2307.00099,
title = {Receiver design for the REACH global 21-cm signal experiment},
author = {Ian L. V. Roque and Nima Razavi-Ghods and Steven H. Carey and John A. Ely and Will Handley and Alessio Magro and Riccardo Chiello and Tian Huang and P. Alexander and D. Anstey and G. Bernardi and H. T. J. Bevins and J. Cavillot and W. Croukamp and J. Cumner and E. de Lera Acedo and D. I. L. de Villiers and A. Fialkov and T. Gessey-Jones and Q. Gueuning and A. T. Josaitis and G. Kulkarni and S. A. K. Leeney and R. Maiolino and P. D. Meerburg and S. Mittal and M. Pagano and S. Pegwal and C. Pieterse and J. R. Pritchard and A. Saxena and K. H. Scheutwinkel and P. Scott and E. Shen and P. H. Sims and O. Smirnov and M. Spinelli and K. Zarb-Adami},
journal= {arXiv preprint arXiv:2307.00099},
year = {2025}
}
备注
30 pages, 19 figures