2005/02/16 by F. H. Briggs, F. Briggs, Briggs, F. H. +2
Engineering · Physics and Astronomy · #Antenna Design and Optimization #Astrophysics (astro-ph) #Electromagnetic Compatibility and Measurements #FOS: Physical sciences #Radio Astronomy Observations and Technology #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0502310
Radio Science, in press. 11 pages, 9 figures
arxiv created 2005/02/16 · openalex publication_date 2005/02/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
This overview provides an interface between lines of thought on rfi mitigation in the fields of radio astronomy and signal processing. The goal is to explore the commonality of different approaches to help researchers in both fields interpret each others' concepts and jargon. The paper elaborates on the astronomers' concept of gain closure relations and how they may be used in a "self-calibrating" system of rfi cancellation. Further discussion of the eigen decomposition method in terms of rfi power and antenna gains introduces adaptive nulling and rfi cancellation through matrix partitioning. While multipath scattering appears at first glance to be fatal to methods of rfi cancellation, its effect is easily incorporated in frequency dependent gain coefficients under many circumstances.