论文标题
基于极化的在线干扰缓解无线电干涉法
Polarization-based online interference mitigation in radio interferometry
论文作者
论文摘要
射频干扰（RFI）的缓解对于将科学就绪的无线电干涉数据传递给天文学家至关重要。在本文中，使用双极化无线电干涉仪，我们建议使用后相关干扰信号的极化信息来检测和减轻它们。我们将极化信号的定向统计作为检测标准，并制定分布式的宽带频谱感知问题。使用共识优化，我们以在线方式解决此问题，与小批量数据一起工作。我们基于模拟提供了广泛的结果，以证明我们方法的可行性。
Mitigation of radio frequency interference (RFI) is essential to deliver science-ready radio interferometric data to astronomers. In this paper, using dual polarized radio interferometers, we propose to use the polarization information of post-correlation interference signals to detect and mitigate them. We use the directional statistics of the polarized signals as the detection criteria and formulate a distributed, wideband spectrum sensing problem. Using consensus optimization, we solve this in an online manner, working with mini-batches of data. We present extensive results based on simulations to demonstrate the feasibility of our method.
