Absolving the SSINS of Precision Interferometric Radio Data: A New Technique for Mitigating Faint Radio Frequency Interference
Absolving the SSINS of Precision Interferometric Radio Data: A New Technique for Mitigating Faint Radio Frequency Interference
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DOI：
10.1088/1538-3873/ab3cad
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发表时间：
2019-06
影响因子：
3.5
通讯作者：
M. Wilensky;M. Morales;B. Hazelton;N. Barry;R. Byrne;Subhasish Subhasish-Subhasish
中科院分区：
文献类型：
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作者：
M. Wilensky;M. Morales;B. Hazelton;N. Barry;R. Byrne;Subhasish Subhasish-Subhasish
我们介绍了一个新的管道，用于分析和减轻射频干扰（RFI），我们称之为天空Substantive非相干噪声谱（ssins）。ssins被设计为通过对时间差的幅值的基线平均幅度采用频率匹配检测算法来识别和去除低于单个基线热噪声的微弱RFI。我们展示了SSINS使用Murchison宽场阵列（MWA）在西澳大利亚州的能力。我们成功地通过使用ssins检测到的数字电视反射的阵列飞行的飞机的图像和总结的RFI占用调查MWA时代的再电离数据。我们描述了如何使用ssins与新数据使用文档，公开可用的实现与全面的使用教程。
We introduce a new pipeline for analyzing and mitigating radio frequency interference (RFI), which we call Sky-Subtracted Incoherent Noise Spectra (ssins). ssins is designed to identify and remove faint RFI below the single baseline thermal noise by employing a frequency-matched detection algorithm on baseline-averaged amplitudes of time-differenced visibilities. We demonstrate the capabilities of ssins using the Murchison Widefield Array (MWA) in Western Australia. We successfully image aircraft flying over the array via digital television reflection detected using ssins and summarize an RFI occupancy survey of MWA Epoch of Reionization data. We describe how to use ssins with new data using a documented, publicly available implementation with comprehensive usage tutorials.