Introduction

GEORADAR-EXPERT software is designed for automated processing of GPR profiling results. Automation in GEORADAR-EXPERT is used to perform time-consuming tasks that convert raw field measurements into an interpretable form with minimal operator involvement. 

The software combines standard GPR data processing methods with specialized algorithms developed for GEORADAR-EXPERT to increase the informational value of a GPR survey. 

A key element of the software is the automated analysis method for the BSEF (Back-Scattering Electromagnetic Field). It provides the transition from an amplitude-based data representation in the form of a radargram to a subsurface model in the form of an attribute section. Attributes are characteristics of the investigated medium and the wave field reflected from its heterogeneities, as well as values calculated from them. 

BSEF analysis is implemented using neural network algorithms. These algorithms allow useful signals to be detected in cases where traditional processing methods are ineffective. Such cases include surveys in low-contrast or heavily noisy media, as well as media with a smooth change in electrophysical characteristics with depth. In such conditions, coherent reflection events do not form on the GPR profile. These events are interpreted as boundaries between layers. 

A set of attribute sections obtained as a result of processing data from an area GPR survey can be converted into a three-dimensional array. This conversion provides additional capabilities for analyzing the spatial distribution of the characteristics of the investigated medium. It also supports determining the shape and volume of its structural elements. 

A statistical analysis module is implemented to identify relationships between the physical-mechanical and electrophysical properties of the medium. These properties are expressed through the attributes of the sections and their statistical indicators. The identified patterns can be used to study similar objects. 

To work with the amplitude representation of the survey result, the GPR profile, the software includes a required set of signal processing functions. These functions suppress noise and highlight useful reflections. The software also includes GEORADAR-EXPERT algorithms for software-based improvement of the resolution of GPR data. 

The use of resolution enhancement algorithms makes it possible to reduce the inverse relationship between resolution and depth of the GPR survey. This relationship is determined by the frequency characteristics of the probing pulse. Low-frequency signals with high penetration capability are transformed into shorter-duration waveforms. As a result, reflections from closely spaced layer boundaries are localized more accurately. 

The software supports GPR data file formats from most well-known geophysical equipment manufacturers. The processing results can be exported to graphic, text, and tabular files, as well as to gridded formats for further use in GIS or CAD systems. 

GEORADAR-EXPERT contains all necessary processing options for solving GPR tasks, including cases with low informational value of field measurements. A more detailed overview of the key capabilities of the software is provided below.

Next Page