Open AccessFast analysis of electromagnetic scattering characteristics in spatial and frequency domains based on compressive sensing
Author(s) -
Mingsheng Chen,
Wang Shi-Wen,
Tao Ma,
Xiaoxia Wu
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.170301
Subject(s) - method of moments (probability theory) , integral equation , scattering , electromagnetics , computer science , compressed sensing , computational electromagnetics , waveform , matrix (chemical analysis) , electromagnetic radiation , algorithm , acoustics , mathematical analysis , physics , electromagnetic field , mathematics , optics , telecommunications , materials science , radar , statistics , engineering physics , quantum mechanics , estimator , composite material
Method of moments (MOM) is a common numerical method for solving electromagnetics, which is used widely owing to its high accuracy. As the traditional MOM is applied to solving electromagnetic problem in both spatial and frequency domains, the matrix equation generated from the integral equation must be solved repeatedly since small spatial increments and frequency increments are both required. To resolve problems of this kind, the compressive sensing (CS) theory combined with the asymptotic waveform evaluation (AWE) is introduced to form a new efficient computational method. Firstly, a new incident source is constructed based on CS theory, in which much spatial information is included. Secondly, illuminated by the new incident source, the new equation is solved by AWE technique, and finally a fast implement is formed for solving electromagnetic scattering characteristics in both spatial and frequency domains.