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Processing and analysis of transient resonant signal of buried object based on wavelet transform
Author(s) -
Guangyou Fang
Publication year - 2002
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.10199
Subject(s) - transient (computer programming) , wavelet transform , ground penetrating radar , impulse (physics) , wavelet , time domain , acoustics , microwave , transient response , singularity , signal (programming language) , engineering , electronic engineering , physics , radar , computer science , electrical engineering , mathematical analysis , mathematics , telecommunications , artificial intelligence , computer vision , quantum mechanics , programming language , operating system
The identification of buried objects is one of the challenging and difficult topics in the ground‐penetrating radar (GPR) domain. In this paper, the transient resonant signals from buried perfectly electrical conductors (PECs) are measured by a kind of impulse GPR system. The relationship between the transient resonance and the natural poles of the buried PEC objects is studied. The wavelet transform (WT) method is used to denoise and calculate the instantaneous parameters. The instantaneous WT power and energy spectra of transient resonant signals are calculated and analyzed. The physical mechanism of the resonance of targets is also studied by the singularity expansion method (SEM) theory. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 32: 427–431, 2002.