MWA tied-array processing I: Calibration and beamformation
MWA tied-array processing I: Calibration and beamformation
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MWA 捆绑阵列处理 I：校准和波束形成
DOI：
10.1017/pasa.2019.17
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发表时间：
2019
影响因子：
6.3
通讯作者：
Franz Kirsten
中科院分区：
文献类型：
--
作者：
S. Ord;S. Tremblay;S. McSweeney;N. Bhat;C. Sobey;D. Mitchell;Paul J. Hancock;Franz Kirsten
摘要Murchison Widefield阵列是位于西澳大利亚Murchison射电天文天文台的一个低频平方公里阵列前兆。该望远镜主要设计为成像望远镜，但具有灵活的信号路径，其能力最近已扩展到包括使用记录的天线电压的离线非相干和线阵波束形成。这为高时间和高频率分辨率的观测提供了能力，包括脉冲星科学计划。本文描述了我们开发的由天线单元的校准信号之和形成联合阵列波束产品的算法和流水线，并给出了185 MHz的PSR J0437-4715和J1900-2600的例子极化分布。
Abstract The Murchison Widefield Array is a low-frequency Square Kilometre Array precursor located at the Murchison Radio-astronomy Observatory in Western Australia. Primarily designed as an imaging telescope, but with a flexible signal path, the capabilities of this telescope have recently been extended to include off-line incoherent and tied-array beam formation using recorded antenna voltages. This has provided the capability for high-time and frequency resolution observations, including a pulsar science program. This paper describes the algorithms and pipeline that we have developed to form the tied-array beam products from the summation of calibrated signals of the antenna elements, and presents example polarimetric profiles for PSRs J0437-4715 and J1900-2600 at 185 MHz.
影响因子：
6.5
作者：
van Haarlem, M. P.;Wise, M. W.;van Zwieten, J.
通讯作者：
van Zwieten, J.