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Application of a multiscale maximum entropy image restoration algorithm to HXMT observations
Guan J(关菊); Song LM(宋黎明); Guan, J; Song, LM; Huo, ZX
2016
发表期刊CHINESE PHYSICS C
卷号40期号:8
通讯作者关菊
文章类型Article
摘要This paper introduces a multiscale maximum entropy (MSME) algorithm for image restoration of the Hard X-ray Modulation Telescope (HXMT), which is a collimated scan X-ray satellite mainly devoted to a sensitive all-sky survey and pointed observations in the 1-250 keV range. The novelty of the MSME method is to use wavelet decomposition and multiresolution support to control noise amplification at different scales. Our work is focused on the application and modification of this method to restore diffuse sources detected by HXMT scanning observations. An improved method, the ensemble multiscale maximum entropy (EMSME) algorithm, is proposed to alleviate the problem of mode mixing exiting in MSME. Simulations have been performed on the detection of the diffuse source Cen A by HXMT in all-sky survey mode. The results show that the MSME method is adapted to the deconvolution task of HXMT for diffuse source detection and the improved method could suppress noise and improve the correlation and signal-to-noise ratio, thus proving itself a better algorithm for image restoration. Through one all-sky survey, HXMT could reach a capacity of detecting a diffuse source with maximum differential flux of 0.5 mCrab.
关键词data analysis image restoration MSME diffuse X-ray source
DOI10.1088/1674-1137/40/8/086203
关键词[WOS]RECONSTRUCTION ; DECONVOLUTION ; CENTAURUS ; OBJECTS
语种英语
WOS记录号WOS:000381731100018
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260809
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714
Guan J,Song LM,Guan, J,et al. Application of a multiscale maximum entropy image restoration algorithm to HXMT observations[J]. CHINESE PHYSICS C,2016,40(8).
APA 关菊,宋黎明,Guan, J,Song, LM,&Huo, ZX.(2016).Application of a multiscale maximum entropy image restoration algorithm to HXMT observations.CHINESE PHYSICS C,40(8).
MLA 关菊,et al."Application of a multiscale maximum entropy image restoration algorithm to HXMT observations".CHINESE PHYSICS C 40.8(2016).
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