Title :
Application of matrix pencil method to SFCW GPR based on constant Q model
Author :
Lele, Qu ; Tianhong, Yang ; Yanpeng, Sun
Author_Institution :
Sch. of Electron. Inf. Eng., Shenyang Aerosp. Univ., Shenyang, China
Abstract :
The time delay and amplitude of buried target echoes are especially important for the application of stepped frequency continuous wave ground penetrating radar (SFCW GPR). The Matrix Pencil Method (MPM) has been used for time delay and amplitude estimation in order to suppress sidelobe and improve detection performance for SFCW GPR system. However, the application of the conventional MPM to SFCW GPR assumes that the dispersivity and loss effect of the subsurface medium can be negligible. To deal with the lossy and dispersive effects of subsurface medium, a modified version of MPM based on depth-variant Q model is adopted to reconstruct the superresolution time domain signal. The simulation results have verified that the new method can give a good estimation of the time delay and amplitude of target echoes for the case of dispersive medium.
Keywords :
CW radar; amplitude estimation; delays; echo suppression; ground penetrating radar; signal reconstruction; amplitude estimation; buried target echo amplitude; constant Q model; depth-variant Q model; matrix pencil method; sidelobe suppression; stepped frequency continuous wave ground penetrating radar SFCW GPR; superresolution time domain signal reconstruction; time delay; Delay effects; Dispersion; Educational institutions; Frequency measurement; Ground penetrating radar; Image resolution; Signal resolution; constant Q model; ground penetrating radar (GPR); matrix pencil method (MPM); stepped frequency;
Conference_Titel :
Electronic Measurement & Instruments (ICEMI), 2011 10th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8158-3
DOI :
10.1109/ICEMI.2011.6037980