TY - GEN
T1 - Robust estimation of dielectric constant by GPR using an antenna array
AU - Liu, Hai
AU - Sato, Motoyuki
PY - 2011/11/16
Y1 - 2011/11/16
N2 - In this paper, we proposed a new cross -correlation sum making use of the complex analytic signal to calculate the coherency of the signals for velocity spectrum analysis. It can estimate dielectric constant from multi-channel dataset robustly even the signal with low SNR. On the other hand, a vector network analyzer based GPR system with an antenna array was developed. The antenna array consisted of one transmit antenna and five receive antennas and it can detect the refection signals at different antenna offset with a high signal-to-clutter ratio. Air layer, gypsum wall and concrete wall of different thickness from 10 cm to 30 cm were tested and four field datasets on asphalt pavement of highway road were collected. The estimation results of dielectric constant and layer thickness validated the accuracy. The maximum errors of the thickness estimation results were less than 1.3cm and the relative errors were smaller than 11%.
AB - In this paper, we proposed a new cross -correlation sum making use of the complex analytic signal to calculate the coherency of the signals for velocity spectrum analysis. It can estimate dielectric constant from multi-channel dataset robustly even the signal with low SNR. On the other hand, a vector network analyzer based GPR system with an antenna array was developed. The antenna array consisted of one transmit antenna and five receive antennas and it can detect the refection signals at different antenna offset with a high signal-to-clutter ratio. Air layer, gypsum wall and concrete wall of different thickness from 10 cm to 30 cm were tested and four field datasets on asphalt pavement of highway road were collected. The estimation results of dielectric constant and layer thickness validated the accuracy. The maximum errors of the thickness estimation results were less than 1.3cm and the relative errors were smaller than 11%.
KW - Ground penetrating radar (GPR)
KW - dielectric constant
KW - thickness estimation
KW - velocity spectrum
UR - http://www.scopus.com/inward/record.url?scp=80955148197&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80955148197&partnerID=8YFLogxK
U2 - 10.1109/IGARSS.2011.6048961
DO - 10.1109/IGARSS.2011.6048961
M3 - Conference contribution
AN - SCOPUS:80955148197
SN - 9781457710056
T3 - International Geoscience and Remote Sensing Symposium (IGARSS)
SP - 178
EP - 181
BT - 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011 - Proceedings
T2 - 2011 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2011
Y2 - 24 July 2011 through 29 July 2011
ER -