A New Image Restoration Method for MUSER

IF 1.6 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Advances in Astronomy Pub Date : 2019-05-02 DOI:10.1155/2019/8087405

Wei Wang, Yihua Yan

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引用次数: 1

Abstract

Solar radio images in decimeter wave range consist of many complicated components including a disk component, some bright and weak compact sources, and many diffuse features. Complicated structures combining these various components maybe cause restoration failure when using conventional algorithms. Furthermore, the images at different frequencies band are pretty different. Therefore, restoration method for solar radio image is different from other radio sources. Some image restoration methods were applied and obtained good results on Nancay radioheliograph images and Nobeyama radioheliograph images, and some new methods were introduced into processing these complicated solar radio images in recent years. For a new radioheliograph with ultrawide frequency band, new image restoration method which can maximize function of telescope is demanded. Different images could be obtained from the same visibilities data by using different weighting functions in imaging processing. In this paper, a new restoration method for solar radio image was proposed. Two images with different weighting functions from the same data are combined in this method. This restoration method has applied to data processing of Mingantu spectral radioheliograph.

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一种新的MUSER图像恢复方法

分米波范围内的太阳射电图像由许多复杂的成分组成，包括圆盘成分、一些明亮和微弱的致密源以及许多散射特征。当使用传统算法时，将这些不同组件组合在一起的复杂结构可能会导致恢复失败。此外，不同频带的图像也有很大的不同。因此，太阳辐射图像的恢复方法不同于其他辐射源。将一些图像恢复方法应用于Nancay和Nobeyama的太阳射电图图像，并取得了良好的效果。近年来，一些新的方法被引入到这些复杂的太阳射电图像的处理中。对于一种新的超宽频带日射图，需要一种能最大限度地发挥望远镜功能的新的图像恢复方法。通过在成像处理中使用不同的加权函数，可以从相同的可视性数据中获得不同的图像。本文提出了一种新的太阳射电图像恢复方法。在该方法中，来自相同数据的具有不同加权函数的两个图像被组合。该恢复方法已应用于明安图光谱太阳图的数据处理。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Astronomy ASTRONOMY & ASTROPHYSICS-

CiteScore

2.70

自引率

7.10%

发文量

审稿时长

22 weeks

期刊介绍： Advances in Astronomy publishes articles in all areas of astronomy, astrophysics, and cosmology. The journal accepts both observational and theoretical investigations into celestial objects and the wider universe, as well as the reports of new methods and instrumentation for their study.