Time delay and surface roughness estimation by subspace algorithms for pavement survey by radar

Author

Meng Sun ; Pinel, Nicolas ; Le Bastard, C. ; Baltazart, Vincent ; Ihamouten, A. ; Yide Wang

Author_Institution

South China Univ. of Technol., Guangzhou, China

fYear

2013

fDate

2-5 July 2013

Firstpage

1

Lastpage

6

Abstract

In civil engineering, ground penetrating radar is widely used for road pavement surveys. In contrast to the existing literature, the influence of interface roughness (surface and interlayer roughness of stratified media) is accounted for within the scope of the data processing of radar signals. The rigorous electromagnetic method PILE (propagation inside layer expansion) provides the simulated data. The observed frequency variations of the radar magnitude introduce some shape distortion on the radar wavelet. An adaptation of the root-MUSIC algorithm is proposed on the basis of the work. As a result, it is allowed to jointly estimate the time delay and the interface roughness.

Keywords

delays; geotechnical structures; ground penetrating radar; inhomogeneous media; radar signal processing; roads; signal classification; structural engineering computing; surface roughness; wavelet transforms; PILE; civil engineering; data processing; electromagnetic method; ground penetrating radar; interface roughness; interlayer roughness; propagation inside layer expansion; radar magnitude; radar signal processing; radar wavelet; road pavement survey; root-MUSIC algorithm; shape distortion; stratified media; subspace algorithm; surface roughness estimation; time delay; Correlation; Delay effects; Ground penetrating radar; Multiple signal classification; Rough surfaces; Surface roughness; MUSIC; ground penetrating radar (GPR); interface roughness; method of moments (MoM); pavement survey; sensitivity analysis; time-delay estimation (TDE);

fLanguage

English

Publisher

ieee

Conference_Titel

Advanced Ground Penetrating Radar (IWAGPR), 2013 7th International Workshop on

Conference_Location

Nantes

Print_ISBN

978-1-4799-0937-7

Type

conf

DOI

10.1109/IWAGPR.2013.6601538

Filename

6601538