宇宙氢分析无线电实验天线设计与优化

2019 International Conference on Electromagnetics in Advanced Applications (ICEAA) Pub Date : 2019-09-01 DOI:10.1109/ICEAA.2019.8879323

B. Klopper, D. D. De Villiers, E. de Lera Acedo

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引用次数: 0

摘要

宇宙氢分析无线电实验(REACH)是一个在50-200 MHz频率范围内进行辐射测量的新项目，目的是实现对与再电离时代(EoR)和宇宙黎明(CD)有关的红移21厘米线特征的可靠检测。该信号的亮度温度比银河系和星系外前景的亮度温度低几个数量级，因此需要设计一种能够提取21厘米信号的辐射计，并且由于接收器仪器的系统影响而产生最小的失真。REACH项目是众多研究机构之间的国际合作，计划于2019年底在南非卡鲁地区部署原型。

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Antenna Design and Optimisation of the Radio Experiment for the Analysis of Cosmic Hydrogen

The Radio Experiment for the Analysis of Cosmic Hydrogen (REACH) is a new project to perform radiometric measurements in the 50–200 MHz frequency range, with the purpose of realising a confident detection of the red-shifted 21 cm line signature pertaining to the Epoch of Reionisation (EoR) and Cosmic Dawn (CD). The brightness temperature of this signal is several orders of magnitude lower than those of the galactic and extra-galactic foregrounds, necessitating a radiometer design that is capable of extracting the 21 cm signal with minimal distortion due to systematic effects in the receiver instrumentation. The REACH project is an international collaboration between numerous research institutions, with prototype deployment for late 2019 planned in the Karoo region of South Africa.

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2019 International Conference on Electromagnetics in Advanced Applications (ICEAA)

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