基于子空间投影算法的PAF接收机射频对消仿真

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Research in Astronomy and Astrophysics Pub Date : 2023-11-10 DOI:10.1088/1674-4527/ad0b84

wu peng, li jian, Maozheng Chen

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引用次数: 0

摘要

摘要介绍了应用空间滤波技术对相控阵馈电进行射频干扰消除的仿真研究。为了更好地反映PAF的特性，在传统的阵列信号模型中加入PAF各单元之间的耦合系数，建立了新的信号模型。然后利用子空间投影(SP)算法对信号相关矩阵中的RFI进行消去，最后绘制二维功率图像。分析了采用SP算法前后感兴趣信号(SOI)方向和RFI方向的功率变化。新的信号模型和仿真策略可用于波束形成器的测试和验证。

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Simulation of RFI cancellation using Subspace Projection Algorithm for PAF receiver

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.

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来源期刊

Research in Astronomy and Astrophysics 地学天文-天文与天体物理

CiteScore

3.20

自引率

16.70%

发文量

2599

审稿时长

6.0 months

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