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arXiv 1503.04338astro-ph.IMcs.CV
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使用任意基的射电天文成像

Towards radio astronomical imaging using an arbitrary basis

Netherlands Institute for Radio Astronomy (ASTRON)(荷兰射电天文研究所(ASTRON))

Matthias Petschow

摘要:

新一代射电望远镜,如平方公里阵列(SKA),需要在计算机硬件和软件方面取得巨大进步,以便有效地处理大量产生的数据。在本文中,我们探索了一种新的宽视场成像方法。通过将由逆傅立叶变换执行的图像重建推广到任意变换,我们获得了巨大的新的可能性。特别是,我们概述了一种方法,可能允许获得的天空图像的大小P倍Q(最佳)O(PQ)的时间。这可能是未来望远镜向实时、宽视场天空成像方向迈出的一步。

英文摘要:

The new generation of radio telescopes, such as the Square Kilometer Array (SKA), requires dramatic advances in computer hardware and software, in order to process the large amounts of produced data efficiently. In this document, we explore a new approach to wide-field imaging. By generalizing the image reconstruction, which is performed by an inverse Fourier transform, to arbitrary transformations, we gain enormous new possibilities. In particular, we outline an approach that might allow to obtain a sky image of size P times Q in (optimal) O(PQ) time. This could be a step in the direction of real-time, wide-field sky imaging for future telescopes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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