Experiments on the dish verification antenna china for the SKA
Experiments on the dish verification antenna china for the SKA
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SKA碟形验证天线陶瓷实验
DOI：
10.1007/s10686-016-9511-4
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发表时间：
2016-09
影响因子：
3
通讯作者：
Lijia Liu
中科院分区：
文献类型：
--
作者：
Xiaoming Chai;Bin Liu;Lei Yu;Shenghua Yu;Di Wu;Lijia Liu
平方公里阵列（SKA）有望在未来几十年内成为世界上最强大的米和厘米波长射电望远镜。SKA的建设将分为两个阶段。第一阶段（SKA 1）计划于2023年完工，将建造整个收集区的10%。第二阶段（SKA 2）将建造其余90%的收集区。SKA 1由几种类型的阵列组成，包括SKA 1-low和SKA 1-mid。后者是由约200个中等尺寸天线组成的碟形阵列。SKA 2中的集成天线阵列将扩展到2500个天线，在非洲南部分布3000公里。SKA碟形天线的规格要求高，数量庞大，这给碟形天线的开发带来了挑战，例如大规模生产、低成本、高性能、快速安装和高可靠性。碟形天线中国（DVA-C）是三个初始原型之一。采用了一种新型的碳纤维复合材料（CFRP）单片平板反射器。在本研究中，我们安装了一个L波段的接收机，使DVA-C成为一个完整的系统，用于天线性能测试和初步观测的实验。测试了DVA-C系统的噪声温度、指向精度、天线方向图和孔径效率等性能。初步观测结果表明，DVA-C不仅可以作为教学仪器和关键技术试验平台，还可以用于脉冲星计时、全天高电离层测量、多频监测等科学工作。
The Square Kilometre Array (SKA) is expected to become the world’s most powerful radio telescope at meter and centimeter wavelength in the coming decades. The construction of SKA will be divided into two phases. The first phase (SKA1), scheduled for completion in 2023, will construct 10 % of the whole collecting area. The second phase (SKA2) will build the rest 90 % collecting area. The SKA1 consists of several types of arrays including SKA1-low and SKA1-mid. The latter is a dish array consisting of ~200 medium-size antennas. The integrated dish array in SKA2 will expand to 2500 dishes, spreading 3000 kilometers across the southern part of Africa. The demanding specifications and enormous number of the SKA dish raise challenges in the dish development such as mass production with high performance at low cost, quick installation and high reliability. Dish Verification Antenna China (DVA-C) was built as one of three initial prototypes. A novel single-piece panel reflector made of carbon fiber reinforced polymer (CFRP) was adopted. In this study, an L-band receiver is installed to make DVA-C a complete system for experiments on antenna performance test and preliminary observations. The performance of DVA-C including the system noise temperature, pointing accuracy, antenna pattern, and aperture efficiency has been tested. Preliminary observations such as pulsars and HI are then conducted, which indicates that the DVA-C can not only serve as an educational instrument and key technology test bed, but also be applied for scientific work such as pulsar timing, all- sky HI survey, multi-frequency monitoring of variable sources etc.
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DOI：
10.1109/ursigass.2014.6930061
发表时间：
2014-10
期刊：
2014 XXXIth URSI General Assembly and Scientific Symposium (URSI GASS)
影响因子：
--
作者：
Wu Yang;Du Biao;Zhou Jianzhai;Sun Yingxiang
通讯作者：
Wu Yang;Du Biao;Zhou Jianzhai;Sun Yingxiang
DOI：
--
发表时间：
2013-10
期刊：
2013 Proceedings of the International Symposium on Antennas & Propagation
影响因子：
--
作者：
Xiaoming Chai;B. Du;Yuanpeng Zheng;Lanchuan Zhou;Xiang Zhang;Bo Peng
通讯作者：
Xiaoming Chai;B. Du;Yuanpeng Zheng;Lanchuan Zhou;Xiang Zhang;Bo Peng
DOI：
--
发表时间：
2015-11
期刊：
2015 International Symposium on Antennas and Propagation (ISAP)
影响因子：
--
作者：
Du Biao;Zheng Yuan-peng;Wu Yang;Yifan Zhang;Li Guoxi;Long Chen;Chai Xiaoming;Liu Bin;Yu Lei;Jin Chengjin;Zhang Xiang;Wu Di;Peng Bo
通讯作者：
Du Biao;Zheng Yuan-peng;Wu Yang;Yifan Zhang;Li Guoxi;Long Chen;Chai Xiaoming;Liu Bin;Yu Lei;Jin Chengjin;Zhang Xiang;Wu Di;Peng Bo
DOI：
10.1109/isape.2012.6409014
发表时间：
2012-10
期刊：
ISAPE2012
影响因子：
--
作者：
D. Davidson
通讯作者：
D. Davidson
影响因子：
20.6
作者：
Dewdney, Peter E.;Hall, Peter J.;Lazio, T. Joseph L. W.
通讯作者：
Lazio, T. Joseph L. W.