Techniques to improve the data quality of interferometric radio observations are considered. Fundaments of fringe frequencies in the uv-plane are discussed and filters are used to attenuate radio-frequency interference (RFI) and off-axis sources. Several new applications of filters are introduced and tested. A low-pass filter in time and frequency direction on single baseline data is successfully used to lower the noise in the area of interest and to remove sidelobes coming from unmodelled off-axis sources and RFI. Related side effects of data integration, averaging and gridding are analysed, and shown to be able to cause ghosts and an increase in noise, especially when using long baselines or interferometric elements that have a large field of view. A novel projected fringe low-pass filter is shown to be potentially useful for first order source separation. Initial tests show that the filters can be several factors faster compared to common source separation techniques such as peeling and a variant of peeling that is currently being tested on LOFAR observations called "demixed peeling". Further testing is required to support the performance of the filters.
Evaluating the effectiveness of radio frequency interference removal algorithms for single pulse searches
Jodrell Bank Centre for Astrophysics, Department of Physics and Astronomy, The University of Manchester（曼彻斯特大学物理与天文学系乔维尔银行天体物理学中心）；Department of Astrophysics, University of Oxford（牛津大学天体物理学系）；Covnetics Ltd（Covnetics有限公司）；Akkodis UK Limited（Akkodis英国有限公司）；Raman Research Institute（拉曼研究所）
Real-Time RFI Mitigation in SPOTLIGHT: A Two-Stage Approach for Transient Searches
National Centre for Radio Astrophysics (NCRA)（国家射电天文中心）；Indian Institute of Science Education and Research (IISER)（印度科学教育与研究学院）；Silesian University in Opava（奥帕瓦西里西亚大学）；Oxford e-Research Centre (OeRC), University of Oxford（牛津大学牛津电子研究中心）
Real-time RFI Mitigation Techniques in Radio Astronomy and Their Practical Limitations
Giant Metrewave Radio Telescope, NCRA-TIFR（巨型米波射电望远镜，NCRA-TIFR）；Herzberg Astronomy and Astrophysics Research Center, National Research Council Canada（赫茨伯格天文学与天体物理学研究中心，加拿大国家研究委员会）；California Institute of Technology（加州理工学院）；Observatoire Radioastronomique de Nançay (ORN), Observatoire de Paris, Université PSL, Université d'Orléans, CNRS（南锡射电天文观测台（ORN），巴黎天文台，PSL大学，奥尔良大学，法国国家科学研究中心）；Max-Planck-Institut für Radioastronomie - Effelsberg radio observatory（马克斯·普朗克射电天文研究所 - 埃菲尔贝格射电观测台）
The CHIME/FRB Outriggers: Commissioning the Hat Creek Outrigger and an Updated Calibration Scheme for Mitigating RFI
ASTRON, Netherlands Institute for Radio Astronomy（荷兰射电天文研究所）；Anton Pannekoek Institute for Astronomy, University of Amsterdam（阿姆斯特丹大学安东·潘内科克天文学研究所）；MIT Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology（麻省理工学院卡弗里天体物理学与空间研究研究所）；Department of Physics, Massachusetts Institute of Technology（麻省理工学院物理学系）
本文介绍 CHIME/FRB Outrigger 中 Hat Creek Outrigger 的调试，采用高斯过程回归校准方案缓解射频干扰，将点源灵敏度提升约 1.69-1.87 倍，并验证了该框架对大型干涉阵列的适用性。
TABASCAL: Removing multi-satellite interference from radio interferometry observations
University of the Witwatersrand（威特沃特斯兰德大学）；University of Cape Town（开普敦大学）；South African Radio Astronomy Observatory（南非射电天文观测台）；Rhodes University（罗德岛大学）；Université de Genève（日内瓦大学）
Bayesian component separation and power spectrum estimation for 21 cm intensity mapping data cubes
University of Western Cape（西开普敦大学）；Jodrell Bank Centre for Astrophysics, University of Manchester（曼彻斯特大学乔德雷克天体物理学中心）；South African Radio Astronomy Observatory（南非射电天文台）；Institute of Cosmology and Gravitation, University of Portsmouth（朴茨茅斯宇宙学与引力研究所）
Removing Radio Frequency Interference from Auroral Kilometric Radiation with Stacked Autoencoders
Department of Computer Science, University of Southern California（计算机科学系，南加州大学）；Haystack Observatory, Massachusetts Institute of Technology（Haystack天文台，麻省理工学院）；Department of Physics and Astronomy, Dartmouth College（物理与天文学系，达特茅斯学院）
Anomaly Detection and Radio-frequency Interference Classification with Unsupervised Learning in Narrowband Radio Technosignature Searches
Breakthrough Listen（突破聆听）；University of California, Berkeley（加州大学伯克利分校）；Cornell University（康奈尔大学）；Cornell Center for Astrophysics（康奈尔天体物理中心）；Planetary Science, Cornell University（康奈尔行星科学）；University of Oxford（牛津大学）；SETI Institute（SETI研究所）；Harvard University（哈佛大学）；University of Malta（马耳他大学）；University of Manchester（曼彻斯特大学）
