An adaptive loop gain selection for CLEAN deconvolution algorithm
文献类型：期刊论文
| 作者 | Wu, Zhong-Zu1; Zhang, Ming2,3 ; Xu, Long4; Zhang, Li5
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| 刊名 | RESEARCH IN ASTRONOMY AND ASTROPHYSICS
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| 出版日期 | 2019-06-01 |
| 卷号 | 19期号:6页码:6 |
| ISSN号 | 1674-4527 |
| 关键词 | methods: data analysis techniques: image processing techniques: interferometric |
| DOI | 10.1088/1674-4527/19/6/79 |
| 通讯作者 | Zhang, Li(lizhang.science@gmail.com) |
| 英文摘要 | Radio interferometry significantly improves the resolution of observed images, and the final result also relies heavily on data recovery. The Cotton-Schwab CLEAN (CS-Clean) deconvolution approach is a widely used reconstruction algorithm in the field of radio synthesis imaging. However, parameter tuning for this algorithm has always been a difficult task. Here, its performance is improved by considering some internal characteristics of the data. From a mathematical point of view, a peak signal-to-noise-based (PSNR-based) method was introduced to optimize the step length of the steepest descent method in the recovery process. We also found that the loop gain curve in the new algorithm is a good indicator of parameter tuning. Tests show that the new algorithm can effectively solve the problem of oscillation for a large fixed loop gain and provides a more robust recovery. |
| 资助项目 | Open Research Program of the CAS Key Laboratory of Solar Activity[KLSA201805] ; Guizhou Science & Technology Plan Project[[2017] 5788] ; Youth Science & Technology Talents Development Project of Guizhou Education Department[KY[2018] 119] ; National Science Foundation of China[11103055] ; National Science Foundation of China[11773062] ; National Science Foundation of China[61605153] ; Light of West China Programme[RCPY201105] ; Light of West China Programme[2017-XBQNXZ-A-008] ; National Basic Research Program of China (973 program)[2012CB821804] ; National Basic Research Program of China (973 program)[2015CB857100] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| WOS记录号 | WOS:000470875400004 |
| 资助机构 | Open Research Program of the CAS Key Laboratory of Solar Activity ; Guizhou Science & Technology Plan Project ; Youth Science & Technology Talents Development Project of Guizhou Education Department ; National Science Foundation of China ; Light of West China Programme ; National Basic Research Program of China (973 program) |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/2805]  |
| 专题 | 星系宇宙学研究团组 新疆天文台_110米口径全可动射电望远镜（SmART）_110米大口径全可动射电望远镜关键技术研究（973项目）_课题1：大样本射电天体的观测和前沿问题研究 |
| 通讯作者 | Zhang, Li |
| 作者单位 | 1.Guizhou Univ, Coll Phys, Guiyang 550025, Guizhou, Peoples R China 2.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 3.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 4.Chinese Acad Sci, Key Lab Solar Act, Natl Astron Observ, Beijing 100101, Peoples R China 5.Guizhou Univ, Coll Big Data & Informat Engn, Guiyang 550025, Guizhou, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Zhong-Zu,Zhang, Ming,Xu, Long,et al. An adaptive loop gain selection for CLEAN deconvolution algorithm[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2019,19(6):6. |
| APA | Wu, Zhong-Zu,Zhang, Ming,Xu, Long,&Zhang, Li.(2019).An adaptive loop gain selection for CLEAN deconvolution algorithm.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,19(6),6. |
| MLA | Wu, Zhong-Zu,et al."An adaptive loop gain selection for CLEAN deconvolution algorithm".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 19.6(2019):6. |
入库方式： OAI收割
来源：新疆天文台
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