论文标题
具有偏振初级梁校正的基于GPU的成像仪
A GPU-based Imager with Polarised Primary-beam Correction
论文作者
论文摘要
下一代的射电望远镜将在广阔的视野中争取前所未有的动态范围，并且如果要达到全面的电位，则必须从清洁的图像中删除一个依赖方向的增益，或者将一个stokes产品泄漏到另一个stokes产品中。不幸的是，这种处理在计算上是极为密集的，并且这些仪器将产生的大量数据变得更具挑战性。在这里，我们描述了一个新的基于GPU的成像仪，该成像仪主要用于ASKAP望远镜，该成像仪能够生成清洁的全偏光图像，其中包括宽场，主要光束和极化泄漏校正。
The next generation of radio telescopes will strive for unprecedented dynamic range across wide fields of view, and direction-dependent gains such as the gain from the primary-beam pattern, or leakage of one Stokes product into another, must be removed from the cleaned images if dynamic range is to reach its full potential. Unfortunately, such processing is extremely computationally intensive, and is made even more challenging by the very large volumes of data that these instruments will generate. Here we describe a new GPU-based imager, aimed primarily at use with the ASKAP telescope, that is capable of generating cleaned, full-polarisation images that include wide-field, primary-beam, and polarisation leakage corrections.
