An adaptive loop gain selection for CLEAN deconvolution algorithm
An adaptive loop gain selection for CLEAN deconvolution algorithm
复制标题
CLEAN反卷积算法的自适应环路增益选择
DOI:
10.1088/1674-4527/19/6/79
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发表时间:
2019-06
影响因子:
1.8
通讯作者:
Wu Zhong Zu
中科院分区:
文献类型:
--
作者:
Zhang Li;Xu Long;Zhang Ming;Wu Zhong Zu
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 algorithmis 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.
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影响因子:
56.9
作者:
R. M. Emberson
通讯作者:
R. M. Emberson
DOI:
10.1007/978-3-319-44431-4
发表时间:
2017-01-01
期刊:
INTERFEROMETRY AND SYNTHESIS IN RADIO ASTRONOMY, 3RD EDITION
影响因子:
--
作者:
Thompson, A. R.;Moran, J. M.;Swenson, G. W.
通讯作者:
Swenson, G. W.
DOI:
10.1002/9783527617845
发表时间:
2016
期刊:
--
影响因子:
--
作者:
通讯作者:
--
影响因子:
6.5
作者:
L. Zhang;L. Zhang;S. Bhatnagar;U. Rau;M. Zhang
通讯作者:
L. Zhang;L. Zhang;S. Bhatnagar;U. Rau;M. Zhang
影响因子:
1.9
作者:
Luyuan Zhang;Mingwang Zhang;Xujia Liu
通讯作者:
Luyuan Zhang;Mingwang Zhang;Xujia Liu