A frequency-independent characterisation of GPR penetration and resolution performance

Noon D.A., Stickley G.F. and Longstaff D. (1998) A frequency-independent characterisation of GPR penetration and resolution performance. Journal of Applied Geophysics, 40 1-3: 127-137.

Author Noon D.A.
Stickley G.F.
Longstaff D.
Title A frequency-independent characterisation of GPR penetration and resolution performance
Journal name Journal of Applied Geophysics   Check publisher's open access policy
ISSN 0926-9851
Publication date 1998
Sub-type Article (original research)
Volume 40
Issue 1-3
Start page 127
End page 137
Total pages 300
Subject 1908 Geophysics
Abstract This paper describes a unified approach for evaluating ground-penetrating radar (GPR) maximum penetration depth and depth resolution performance independent of frequency. The method is based on the constant Q model, which approximately describes the electromagnetic properties of many ground materials. For these materials, the attenuation due to the absorption losses is approximately linear to frequency, and the propagation velocity due to the permittivity is largely independent of frequency. Using the constant Q model for ground materials, the radar equation (which defines maximum range for 'candidate' targets) and the Rayleigh equation (which defines resolution) can be expressed in terms of dimensionless variables. This allows system parameters of 'loop gain' and 'fractional bandwidth' to describe the maximum penetration depth and resolution capability in terms of wavelengths in the ground. We show that the loop gain and fractional bandwidth parameters prove to be a useful design tool in characterising GPR performance independent of frequency, and in selecting the system operating parameters for specified applications.
Keyword Constant Q
GPR
Penetration
Radar range
Resolution
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Scopus Import
 
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