The Expanded Very Large Array

被引：81

作者：

Perley, Richard ^{[1
]}

Napier, Peter ^{[1
]}

Jackson, Jim ^{[1
]}

Butler, Bryan ^{[1
]}

Carlson, Brent ^{[1
,2
]}

Fort, David ^{[2
]}

Dewdney, Peter ^{[3
]}

Clark, Barry ^{[1
]}

Hayward, Robert ^{[2
]}

Durand, Steven ^{[1
]}

Revnell, Mike ^{[1
]}

McKinnon, Mark ^{[1
]}

机构：

[1] Natl Radio Astron Observ, Socorro, NM 87801 USA

[2] Natl Res Council Canada, Domin Radio Astrophys Observ, Penticton, BC V2A 6K3, Canada

[3] Univ Manchester, SKA Program Dev Off, Manchester M13 9PL, Lancs, England

来源：

PROCEEDINGS OF THE IEEE | 2009年 / 97卷 / 08期

关键词：

Aperture synthesis; corrugated feed horns; digital correlator; digital data transmission; frequency synthesizers; IF down-converters; low-noise amplifiers; low-noise receivers; orthomode transducers; radio astronomy; radio telescope; wide-band RF systems; BAND; PERFORMANCE; DESIGN;

D O I：

10.1109/JPROC.2009.2015470

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

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 under way 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.

引用

页码：1448 / 1462

页数：15

共 30 条

[1] On the performance of low-noise low-dc-power-consumption cryogenic amplifiers [J].