Application of a multiscale maximum entropy image restoration algorithm to HXMT observations

doi:10.1088/1674-1137/40/8/086203

	Application of a multiscale maximum entropy image restoration algorithm to HXMT observations
	Guan, J; Huo, ZX; Guan J(关菊); Song LM(宋黎明); Song, LM
刊名	CHINESE PHYSICS C
	2016
卷号	40 期号:8
关键词	data analysis image restoration MSME diffuse X-ray source
DOI	10.1088/1674-1137/40/8/086203
通讯作者	关菊
英文摘要	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.
语种	英语
WOS记录号	WOS:000381731100018
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/260809]
专题	中国科学院高能物理研究所
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,Huo, ZX,Guan J,et al. Application of a multiscale maximum entropy image restoration algorithm to HXMT observations[J]. CHINESE PHYSICS C,2016,40(8).
APA	Guan, J,Huo, ZX,关菊,宋黎明,&Song, LM.(2016).Application of a multiscale maximum entropy image restoration algorithm to HXMT observations.CHINESE PHYSICS C,40(8).
MLA	Guan, J,et al."Application of a multiscale maximum entropy image restoration algorithm to HXMT observations".CHINESE PHYSICS C 40.8(2016).