{"title":"Simulation of RFI cancellation using Subspace Projection Algorithm for PAF receiver","authors":"wu peng, li jian, Maozheng Chen","doi":"10.1088/1674-4527/ad0b84","DOIUrl":null,"url":null,"abstract":"Abstract The simulation of Radio Frequency Interference (RFI) cancellation by applying spatial filtering technique for phased array feed (PAF) is presented. In order to better reflect the characteristics of PAF, a new signal model is to add the coupling coefficient among elements of PAF to the conventional array signal model. Then the subspace
projection (SP) algorithm is used to cancel RFI from correlation matrix of signal, and finally the 2D power image is drawn. The power variation of signal-of-interest (SOI) direction and RFI direction before and after using the SP algorithm is analyzed. The new signal model and simulation strategy can be used to test and verify the beamformer.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"80 13","pages":"0"},"PeriodicalIF":2.8000,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Research in Astronomy and Astrophysics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/1674-4527/ad0b84","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
Abstract The simulation of Radio Frequency Interference (RFI) cancellation by applying spatial filtering technique for phased array feed (PAF) is presented. In order to better reflect the characteristics of PAF, a new signal model is to add the coupling coefficient among elements of PAF to the conventional array signal model. Then the subspace
projection (SP) algorithm is used to cancel RFI from correlation matrix of signal, and finally the 2D power image is drawn. The power variation of signal-of-interest (SOI) direction and RFI direction before and after using the SP algorithm is analyzed. The new signal model and simulation strategy can be used to test and verify the beamformer.
期刊介绍：
Research in Astronomy and Astrophysics (RAA) is an international journal publishing original research papers and reviews across all branches of astronomy and astrophysics, with a particular interest in the following topics:
-large-scale structure of universe formation and evolution of galaxies-
high-energy and cataclysmic processes in astrophysics-
formation and evolution of stars-
astrogeodynamics-
solar magnetic activity and heliogeospace environments-
dynamics of celestial bodies in the solar system and artificial bodies-
space observation and exploration-
new astronomical techniques and methods
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