Title :
The effect of the elevation of GPR antennas on data quality
Author :
Bloemenkamp, Richard ; Slob, Evert
Author_Institution :
Fac. of Civil Eng. & Appl. Geosciences, Delft Univ. of Technol., Netherlands
Abstract :
In many GPR-measurement situations it is possible to measure with the antennas of the GPR-system in contact with medium containing the unknown objects. In this paper, we have tested the performance of a commercial Pulse Ekko 1000 system at various heights above a sand-surface. We show measurements over the same area with the antennas of this near-surface GPR system at four different heights above the surface. We show that the decrease in signal to noise ratio is small for two-way distances between antenna and surface is smaller than one third of the dominant wavelength. For larger distances, the signal quality decreases rapidly for data processing purposes and object detectability.
Keywords :
buried object detection; ground penetrating radar; radar antennas; radar detection; synthetic aperture radar; GPR antenna elevation; GPR-measurement; Pulse Ekko 1000 system; SAR; SNR; data processing; data quality; dominant wavelength; ground penetrating radar; near-surface GPR system; object detectability; sand-surface; signal quality; signal to noise ratio; synthetic aperture radar; two-way distance; vertical offset; Antenna measurements; Area measurement; Data processing; Ground penetrating radar; Object detection; Signal processing; Signal to noise ratio; Surface waves; System testing; Wavelength measurement;
Conference_Titel :
Advanced Ground Penetrating Radar, 2003. Proceedings of the 2nd International Workshop on
Conference_Location :
Delft, Netherlands
Print_ISBN :
90-76928-04-5
DOI :
10.1109/AGPR.2003.1207319
