The design and implementation of a ROACH2+GPU based correlator on the Tianlai dish array

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成果类型：

期刊论文

作者：

Niu, Chen-Hui;Wang, Qun-Xiong;MacMahon, David;Wu, Feng-Quan*;Chen, Xue-Lei;...

通讯作者：

Wu, Feng-Quan

作者机构：

[Niu, Chen-Hui; Zheng, Xiao-Ping] Cent China Normal Univ, Coll Phys Sci & Technol, Wuhan 430079, Hubei, Peoples R China

[Niu, Chen-Hui; Wang, Qun-Xiong; Wu, Feng-Quan; Chen, Xue-Lei; Li, Ji-Xia] Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, Beijing 100101, Peoples R China

[Niu, Chen-Hui; MacMahon, David; Shippee, Guillaume; Werthimer, Dan] Univ Calif Berkeley, Campbell Hall 339, Berkeley, CA 94720 USA

[Wang, Qun-Xiong; Tian, Hai-Jun] China Three Gorges Univ, Coll Sci, Yichang 443002, Peoples R China

[Chen, Xue-Lei; Li, Ji-Xia] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China

通讯机构：

[Wu, Feng-Quan] C

Chinese Acad Sci, Natl Astron Observ, Key Lab Computat Astrophys, Beijing 100101, Peoples R China.

语种：

英文

关键词：

instrumentation: interferometers

期刊：

天文和天体物理学研究：英文版

ISSN：

1674-4527

年：

2019

卷：

期：

页码：

133-142

DOI：

10.1088/1674-4527/19/7/102

基金类别：

Repair and Procurement Program of the Chinese Academy of Sciences (CAS); National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11473044, 11633004, 11773011, 11761141012]; MoST Grants [2016YFE0100300, 2012AA121701]; CAS Frontier Science Key Project [QYZDJ-SSW-SLH017]

机构署名：

本校为第一机构

院系归属：

物理科学与技术学院

摘要：

A digital correlator is a crucial element in a modern radio telescope. In this paper, we describe a scalable design for the correlator system of the Tianlai pathfinder array, which is an experiment dedicated to testing key technologies for conducting a 21 cm intensity mapping survey. The correlator implements the FX design, which firstly performs a fast Fourier transform (FFT) including polyphase filter bank (PFB) computation using a Collaboration for Astronomy Signal Processing and Electronics Research (CASPER) Reconfigurable Open Architecture Computing Hardware-2 (ROACH2) board, then compute...

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The design and implementation of a ROACH2+GPU based correlator on the Tianlai dish array

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