POLARIMETERS

作品数：14被引量：9H指数：2
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YFPOL: A Linear Polarimeter of Lijiang 2.4 m Telescope
《Research in Astronomy and Astrophysics》2022年第9期10-34,共25页Yu-Xin Xin Jin-Ming Bai Zhong-Quan Qu Zhi Xu Ji-Rong Mao Kai Ye Bao-Li Lun Xu Ding Hong-Tao Liu Yue Zhong Yu-Feng Fan Xiao-Guang Yu Liang Xu Xiao-Bo Dong Jian-Guo Wang Ding-Rong Xiong 
supported by the National Key R&D Program of China with No.2021YFA1600404;the National Natural Science Foundation of China (NSFC, Grant Nos. 11991051, 11573067, 11673062,11527804, U1931206 and 11873091);the CAS “Light of West China” Program;the Yunnan Province Basic Research Plan with No. 2019FA001;the China Manned Space Project with No. CMS-CSST-2021-A06;funded by Yunnan Province,Chinese Academy of Sciences and NSFC。
Polarimetry plays an important role in investigating physical properties for celestial objects. We present a polarimeter named YFPOL for the Cassegrain focus of the Lijiang 2.4 m Telescope(LJT) of Yunnan Observatories...
关键词：POLARIZATION instrumentation:polarimeters techniques:image processing techniques:polarimetric 
Recent progress on the J-TEXT three-wave polarimeter-interferometer
《Plasma Science and Technology》2022年第6期1-6,共6页Yuhan WANG Li GAO Peng SHI Xin XU Yinan ZHOU Qinglong YANG Chengyu YANG Qinlin TAO Chengshuo SHEN Yajun WANG Lu WANG Zhipeng CHEN Donghui XIA Zhongyong CHEN Nengchao WANG Zhoujun YANG Yonghua DING Yuan PAN J-TEXT Team 
the National MCF Energy R&D Program of China(No.2018YFE0310300);National Natural Science Foundation of China(Nos.11905080 and 51821005)。
The J-TEXT three-wave polarimeter-interferometer system(POLARIS),which measures timespace distribution of electron density and current density,has been optimized with both the optical system and the equilibrium recons...
关键词：current density profile EFIT POLARIMETERS 
Discrimination of background events in the PolarLight X-ray polarimeter
《Research in Astronomy and Astrophysics》2021年第9期202-206,共5页Jiahuan Zhu Hong Li Hua Feng Jiahui Huang Xiangyun Long Qiong Wu Weichun Jiang Massimo Minuti Saverio Citraro Hikmat Nasimi Dongxin Yang Jiandong Yu Ge Jin Ming Zeng Peng An Luca Baldini Ronaldo Bellazzini Alessandro Brez Luca Latronico Carmelo Sgrò Gloria Spandre Michele Pinchera Fabio Muleri Paolo Soffitta Enrico Costa 
funding support from the National Natural Science Foundation of China(Grant Nos.11633003,12025301 and 11821303);the CAS Strategic Priority Program on Space Science(Grant No.XDA15020501-02);the National Key R&D Project(Grant Nos.2018YFA0404502 and 2016YFA040080X)。
PolarLight is a space-borne X-ray polarimeter that measures the X-ray polarization via electron tracking in an ionization chamber.It is a collimated instrument and thus suffers from the background on the whole detecto...
关键词：instrumentation:polarimeters methods:data analysis X-rays:general 
A novel method for telescope polarization modeling based on an artificial neural network
《Research in Astronomy and Astrophysics》2021年第7期41-50,共10页Jian-Guo Peng Shu Yuan Kai-Fan Ji Zhi Xu 
supported by the National Natural Science Foundation of China(Grant Nos.11833010,11773069,11773072,11873091 and 12073077);Key Research and Development Project of Yunnan Province(202003AD150019);Yunnan Province Basic Research Plan(2019FA001);the CAS‘Light of West China’Program(Y9XB015001)。
The polarization characteristics of an astronomical telescope is an important factor that affects polarimetry accuracy. Polarization modeling is an essential means to achieve high precision and efficient polarization ...
关键词：techniques:polarimetric telescopes POLARIZATION instrumentation:polarimeters 
Correction of the temperature effect in calibration of a solar radio telescope被引量：2
《Research in Astronomy and Astrophysics》2021年第6期349-358,共10页Li-Hong Geng Cheng-Ming Tan Yi-Hua Yan Bao-Lin Tan Dong-Hao Liu Jin-Ping Dun 
supported by NSFC(Grant Nos.11433006,11661161015,11790301,11790305,11973057,11773043,11941003 and 2018YFA0404602);the MOST grant(2014FY120300)。
This work analyzes the annual fluctuation of the observation data of the Mingantu Solar radio Telescope(MST)in S,C and X bands.It is found that the data vary with local air temperature as the logarithmic attenuation o...
关键词：INSTRUMENTATION polarimeters methods data analysis methods:observational 
An agile very low frequency radio spectrum explorer被引量：1
《Research in Astronomy and Astrophysics》2021年第4期139-148,共10页Lin-Jie Chen Yi-Hua Yan Qiu-Xiang Fan Li-Hong Geng Susanta Kumar Bisoi 
funded by the National Natural Science Foundation of China(NSFC,Nos.11573043,11790305,11433006);National Key R&D 278 Program of China(2018YFA0404602);the CE4 mission of the Chinese Lunar Exploration Program:the Netherlands-China Low Frequency Explorer(NCLE);Chinese Academy of Sciences(CAS)Strategic Priority Research Program(XDA15020200)。
The very low frequency(VLF)regime below 30 MHz in the electromagnetic spectrum has presently been drawing global attention in radio astronomical research due to its potentially significant science outcomes exploring m...
关键词：very low frequency instrumentation:polarimeters methods:data analysis 
Triple Range Imager and POLarimeter(TRIPOL)——a compact and economical optical imaging polarimeter for small telescopes
《Research in Astronomy and Astrophysics》2019年第9期149-158,共10页Shuji Sato Po Chieh Huang Wen Ping Chen Takahiro Zenno Chakali Eswaraiah Bo He Su Shinsuke Abe Daisuke Kinoshita Jia Wei Wang 
supported by Grant-in-Aid for Science Research from the Ministry of Education, Culture, Sports and Technology of Japan
We report the design concept and performance of a compact, lightweight and economical imaging polarimeter, the Triple Range Imager and POLarimeter(TRIPOL), capable of simultaneous optical imagery and polarimetry. TRIP...
关键词：instrumentation:photometers instrumentation:polarimeters techniques:photometric techniques:polarimetric methods:observational ISM:magnetic fields 
Observation data pre-processing and scientific data products generation of POLAR
《Research in Astronomy and Astrophysics》2019年第7期13-24,共12页Zheng-Heng Li Jian-Chao Sun Li-Ming Song Bo-Bing Wu Lu Li Xing Wen Hua-Lin Xiao Shao-Lin Xiong Lai-Yu Zhang Shuang-Nan Zhang Yong-Jie Zhang 
financial support from the Joint Research Fund in Astronomy under a cooperative agreement between the National Natural Science Foundation of China and the Chinese Academy of Sciences (Grant No. U1631242);the National Natural Science Foundation of China (Grant Nos. 11503028 and 11403028);the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB23040400);the National Basic Research Program (973 Program) of China (2014CB845800)
POLAR is a compact space-borne detector initially designed to measure the polarization of hard X-rays emitted from Gamma-Ray Bursts in the energy range 50–500 ke V.This instrument was launched successfully onboard th...
关键词：GAMMA-RAY BURST general-methods data analysis-instrumentation POLARIMETERS 
Texture invariant estimation of equivalent number of looks based on log-cumulants in polarimetric radar imagery
《Journal of Systems Engineering and Electronics》2017年第1期58-66,共9页Xianghui Yuan Tao Liu 
supported by the National Natural Science Foundation of China(61372165)
A novel estimation of the equivalent number of looks (ENL) is proposed in statistical modeling of multilook polarimetric synthetic aperture radar (PolSAR) images for the product model, which is based on the log-determ...
关键词：Covariance matrix Matrix algebra Method of moments Parameter estimation POLARIMETERS RADAR Radar imaging Tracking radar 
Design and calibration of a high-sensitivity and high-accuracy polarimeter based on liquid crystal variable retarders被引量：1
《Research in Astronomy and Astrophysics》2017年第1期87-96,共10页Jing Guo De-Qing Ren Cheng-Chao Liu Yong-Tian Zhu Jiang-Pei Dou Xi Zhang Christian Beck 
funded by the National Natural Science Foundation of China(NSFC,Grant Nos.11661161011,11433007,11220101001,11328302,11373005 and 11303064);the Opening Project of Key Laboratory of Astronomical Optics&Technology,Nanjing Institute of Astronomical Optics&Technology,Chinese Academy of Sciences(CASKLAOT-KF201606);the“Strategic Priority Research Program”of the Chinese Academy of Sciences(Grant No.XDA04075200);the special fund for astronomy of CAS(2015–2016);the special funding for Young Researcher of Nanjing Institute of Astronomical Optics&Technology;the International Partnership Program of the Chinese Academy of Sciences(Grant No.114A32KYSB20160018);the Mt.Cuba Astronomical Foundation
Polarimetry plays an important role in the measurement of solar magnetic fields. We devel- oped a high-sensitivity and high-accuracy polarimeter （HHP） based on nematic liquid crystal variable retarders （LCVRs）, wh...
关键词：instrumentation polarimeters - methods laboratory - Sun magnetic fields - tech-niques polarimetric 
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