CLEAN and multi-scale CLEAN for STIX in Solar Orbiter
Miriana Catalano, Anna Volpara, Paolo Massa, Michele Piana, Anna Maria Massone
CLEAN是一种完善的去卷积方法,用于傅里叶成像,同时具有无线电波流和硬X射线能量。 然而,对于硬X射线成像,CLEAN有两个显着的缺点:自动化程度相当有限,以及分辨率不足的倾向。 本文介绍了CLEAN的多尺度版本,专门用于从光谱仪/望远镜观测仪(STIX)在太阳能轨道器上测量的图像的重建。 使用合成的STIX数据,这项研究表明,多尺度CLEAN可能代表了先前提到的两种CLEAN限制的可靠解决方案。 此外,本文还展示了CLEAN的表现及其多尺度释放在重建以复杂排放形态为特征的实验真实情景中的表现。
CLEAN is a well-established deconvolution approach to Fourier imaging at both radio wavelwengths and hard X-ray energies. However, specifically for hard X-ray imaging, CLEAN suffers two significant drawbacks: a rather limited degree of automation, and a tendency to under-resolution. This paper introduces a multi-scale version of CLEAN specifically tailored to the reconstruction of images from measurements observed by the Spectrometer/Telescope for Imaging X-rays (STIX) on-board Solar Orbiter. Us...