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arXiv 0909.1585astro-ph.IM
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扩展的超大型阵列

The Expanded Very Large Array

R. Perley, P. Napier, J. Jackson, B. Butler, B. Carlson, D. Fort, P. Dewdney, B. Clark, R. Hayward, S. Durand, M. Revnell, M. McKinnon

摘要:

在近30年的运行中,甚大阵(VLA)已被证明是一个非常灵活和富有成效的射电望远镜。然而,VLA的基本能力自设计以来几乎没有变化。目前正在利用现代技术进行重大扩展,以在灵敏度和频率覆盖范围方面至少提高一个数量级的VLA能力。扩展甚大阵列(EVLA)项目的主要组成部分包括新的或升级的接收机,用于从1到50 GHz的连续频率覆盖,新的本地振荡器,中频和宽带数据传输系统,用于从每个天线携带16 GHz总带宽的信号,以及一种新的数字相关器,其具有处理具有用于成像阵列的前所未有数量的频率通道的带宽的能力。还包括一个新的监测和控制系统和新的软件,将提供望远镜的易用性。EVLA计划于2012年完工,将为世界研究界提供一个灵活、强大、通用的望远镜,以解决当前和未来的天文学问题。

英文摘要:

In almost 30 years of operation, the Very Large Array (VLA) has proved to be a remarkably flexible and productive radio telescope. However, the basic capabilities of the VLA have changed little since it was designed. A major expansion utilizing modern technology is currently underway to improve the capabilities of the VLA by at least an order of magnitude in both sensitivity and in frequency coverage. The primary elements of the Expanded Very Large Array (EVLA) project include new or upgraded receivers for continuous frequency coverage from 1 to 50 GHz, new local oscillator, intermediate frequency, and wide bandwidth data transmission systems to carry signals with 16 GHz total bandwidth from each antenna, and a new digital correlator with the capability to process this bandwidth with an unprecedented number of frequency channels for an imaging array. Also included are a new monitor and control system and new software that will provide telescope ease of use. Scheduled for completion in 2012, the EVLA will provide the world research community with a flexible, powerful, general-purpose telescope to address current and future astronomical issues.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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