中国科学院机构知识库网格系统: 检索

Opportunities to search for extraterrestrial intelligence with the FAST 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2020, 卷号: 20, 期号: 5, 页码: 12
作者: Li, Di; Gajjar, Vishal; Wang, Pei; Siemion, Andrew; Zhang, Zhi-Song

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收藏 | 浏览/下载：47/0 | 提交时间：2020/06/28

Search for Extraterrestrial Intelligence Five-hundred-meter Aperture Spherical radio Telescope

Opportunities to search for extraterrestrial intelligence with the FAST 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2020, 卷号: 20, 期号: 5, 页码: 12
作者: Li, Di; Gajjar, Vishal; Wang, Pei; Siemion, Andrew; Zhang, Zhi-Song

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收藏 | 浏览/下载：38/0 | 提交时间：2021/12/06

Search for Extraterrestrial Intelligence Five-hundred-meter Aperture Spherical radio Telescope

Studying solutions for the fatigue of the FAST cable-net structure caused by the process of changing shape 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2015, 卷号: 15, 期号: 10, 页码: 1758-1772
作者: Jiang, Peng; Nan, Ren-Dong; Qian, Lei; Yue, You-Ling

收藏 | 浏览/下载：27/0 | 提交时间：2016/09/27

five-hundred-meter aperture spherical radio telescope fatigue resistance astronomical techniques and approaches cable-net structure finite element

Studying solutions for the fatigue of the FAST cable-net structure caused by the process of changing shape 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS, 2015, 卷号: 15, 期号: 10, 页码: 1758-1772
作者: Jiang, Peng; Nan, Ren-Dong; Qian, Lei; Yue, You-Ling; Nan Rendong

收藏 | 浏览/下载：13/0 | 提交时间：2016/11/09

five-hundred-meter aperture spherical radio telescope fatigue resistance astronomical techniques and approaches cable-net structure finite element

An optical design of the telescope in the Wide Field of View Cherenkov/Fluorescence Telescope Array 期刊论文 OAI收割
ASTROPARTICLE PHYSICS, 2015, 卷号: 67, 页码: 8-17
作者: LHAASO Collaboration

收藏 | 浏览/下载：27/0 | 提交时间：2016/04/18

Cherenkov Curvature radii Imaging quality Light spot Photon collection Spherical designs Telescope arrays Wide field of view

Design Study of an L-Band Phased Array Feed for Wide-Field Surveys and Vibration Compensation on FAST 期刊论文 OAI收割
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 2013, 卷号: 61, 期号: 6, 页码: 3026-3033
作者: Wu, Yang; Warnick, Karl F.; Jin, Chengjin

收藏 | 浏览/下载：20/0 | 提交时间：2016/11/14

Adaptive beamforming Five-hundred-meter Aperture Spherical Telescope (FAST) phased array feed radio astronomy sensitivity

Accuracy synthesis of a 3-RPS parallel robot based on manufacturing costs (EI CONFERENCE) 会议论文 OAI收割
31st Chinese Control Conference, CCC 2012, July 25, 2012 - July 27, 2012, Hefei, China
Yao T.-K.; Xi Z.; Feng Z.; Zhang L.-M.; Yong W.

收藏 | 浏览/下载：32/0 | 提交时间：2013/03/25

Pose accuracy is an important issue for parallel robot being used as mirror supporting system of telescope. One challenging topic is the accuracy synthesis which deals with the optimal design of the manufacturing and assembling tolerances of each component under the given pose accuracy. First the error model of the 3-RPS parallel robot is built based on total derivation of the kinematic equations. And the error variable of each spherical or rotate joint can be expressed as a single boundary error parameter but not three independent position parameters. Then the accuracy synthesis model is formulated taking the manufacturing costs as the optimization objective and the accuracy requirements as the constraint condition. Finally the genetic algorithm is used to solve the optimization problem and a simulation example is given. The results show that the accuracy synthesis method based on manufacturing costs can satisfy the need of pose accuracy and is better for engineering application than the method based on error sensitivity. 2012 Chinese Assoc of Automati.

Study on spectrograph for ionosphere: A broadband imaging instrument prototype for far-ultraviolet (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
作者: Wang S.-R.; Lin G.-Y.; Yu L.

收藏 | 浏览/下载：36/0 | 提交时间：2013/03/25

Current research on space-based exploration for the ionosphere needs more advanced technologies. Because the spectral signals in the ionosphere distributing basically in the far-ultraviolet waveband are very weak. Usual spectrometer structures and detectors such as CCD can't receive enough information. Based on this principle of atmospheric sounding the imaging spectrometer prototype for ionosphere detection application was designed to solve the problem. This prototype consists of the telescope and the imaging spectrometer. The simple structure and small number of mirrors can help higher transmission efficiency be achieved and weak signals detection be implemented. The telescope is an off-axis parabolic mirror and the spectrometer is a modified Czerny-Turner spectral imaging system. Modified Czerny-Turner spectrometer contains a spherical mirror a fixed plane grating and a toroidal mirror. By adjusting the incident angle to the collimating mirror and using toroidal mirror coma and astigmatism were corrected well. We also optimize distances between the grating to the focusing mirror and the focusing mirror to the image plane to improve disadvantages of traditional Czerny-Turner structure. Designed results demonstrate that aberrations are substantially corrected and high image quality can be obtained in broad waveband. The photon counting Wedge-Strip-Anode detector with micro-channel planes as the receiving plane is accepted for the instrument prototype. The other photon counting 2-D detector responding well for weak light such as Cross-Delay line detector and MAMA detector can also be used for detection. The calibration and performances testing system is made of a vacuum system a deuterium lamp a monochrometer and the instrument prototype. Results obtained from the experiment show that the spectral resolution is 2.4 nm and the spatial resolution is 80 m. The other calibration experiments are running. The technology of the spectrometer prototype is important for the research and applications of ionosphere remote sensing. 2011 SPIE.

Design and wavefront sensing for the segmented Spherical Primary Optical Telescope 会议论文 OAI收割
2011 international conference on electronic and mechanical engineering and information technology, emeit 2011, harbin, china, august 12, 2011 - august 14, 2012
ShengzhangKai; FanXuewu; LiChuang; LiuKai

收藏 | 浏览/下载：18/0 | 提交时间：2012/07/10

high-resolution SPOT on-orbit cophasing segmented spherical primary mirror quasi-Cassegrain telescope wavefront sensing and control Diffraction-limited

Preparatory Study for Constructing FAST, the World's Largest Single Dish 期刊论文 OAI收割
PROCEEDINGS OF THE IEEE, 2009, 卷号: 97, 期号: 8, 页码: 1391-1402
作者: Peng, Bo; Jin, Chengjin; Wang, Qiming; Zhu, Lichun; Zhu, Wenbai

收藏 | 浏览/下载：34/0 | 提交时间：2017/04/11

Active reflector focus cabin driven by cables Karst depression prototyping spherical telescope