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Examples of Processing Results:

Hidden Defects in Concrete

Pipe Detection

Pile Foundation Grillage

Engineering Geology

Railroads

Building Control

Municipal Engineering

Non-destructive Testing

Air Voids in the Soil

Illegal Tie-in Into Oil Pipeline

Archeology

Relief Map

3D Processing

Certificate:

Certificate of state registration program GEORADAR-EXPERT

Publications:

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Attention of licensees! On December 23, 2017, the software update of GEORADAR-EXPERT was released.
Details on THIS LINK >>

ABOUT THE GEORADAR-EXPERT

GEORADAR-EXPERT is state-of-the-art software for automated processing of GPR profiling data. GEORADAR-EXPERT includes both standard GPR processing options implemented in many software products and algorithms and methods developed specifically for GEORADAR-EXPERT that increase the informativeness of GPR research.

Increasing the information content of GPR research is the main reason why the GEORADAR-EXPERT software was created. The automated analysis of the back-scattering electromagnetic field BSEF developed for GEORADAR-EXPERT successfully solves this problem. The final result of processing GPR data by the method of automated analysis BSEF is a section of the attribute of a subsurface media or a GPR wave field.

The figure below shows the result of the GPR profiling of the bulk soil with an antenna of 200 MHz. GPR users know that very often the results of the GPR survey are very different in quality from the advertising GPR profiles of the manufacturers of GPR equipment, where each boundary between the subsurface layers is seen very well. But in practice, there is often such a result of GPR profiling:

GEORADAR-EXPERT. GPR profile raw data.

Due to the strong damping of the GPR pulse in this layer of bulk soil, the bottom surface is not visible. Processing of the GPR profile using standard methods of digital signal processing (filtering, etc.) in order to suppress interference and improve the visibility of the boundary has produced no positive results:

GEORADAR-EXPERT. GPR profile standart processed raw data.

And now consider the sections created in the GEORADAR-EXPERT using the BSEF automated analysis method. The figure below shows the section of the attribute "The real part of the complex relative permittivity".

GEORADAR-EXPERT.Permittivity section.

Two layers of soil are clearly visible on the section. The color scheme of this section is chosen so that the bulk soil is displayed in red, yellow, green and cyan colors, the underlying ground is displayed in blue and dark blue colors. In addition, one can see how the electrophysical characteristics of the soil inside the layers change.

It is known that the moisture content of soil affects the dielectric constant, to a greater extent. To see the distribution of humidity, you can create a section of the attribute "Weight water content" or " Volumetric water content". As an example, the figure below shows the section of the attribute "Weight water content".

GEORADAR-EXPERT. Weight water content section.

To indirectly estimate the relative density of the soil, you can use the Q-factor attribute (the ratio of the center frequency to the width of the spectrum of the reflected GPR signals). The figure below shows the section of the Q-factor attribute, where the least dense soil is displayed in red, the relatively dense soil is displayed in blue and the darker the blue. Moreover, the darker the blue color, the denser the soil.

GEORADAR-EXPERT. Q-factor section.

The list of attributes used in GEORADAR-EXPERT is wide enough - the entire list can be found in the user's manual of GEORADAR-EXPERT, which can be downloaded from the FOLLOWING LINK>>.

It should be noted that if the boundaries of the layers are clearly visible on the GPR profile, it is still of undoubted interest to see how the attribute values inside these layers change. And here you can not do without GEORADAR-EXPERT. This statement remains true also in the case of GPR studies of subsurface media, where the electrophysical characteristics change smoothly, without sharp jumps that form the boundaries of the layers on the GPR profile. For example:

For more information on the automated analysis of BSEF, see the article published in the scientific and technical journal Geofizika No. 4, 2010, pp. 76-80. The English translation of this article is available at the FOLLOWING LINK>>.

The creation of the sections considered above took only a few minutes, with minimal participation of the user of the GEORADAR-EXPERT software in this process. Obviously, the BSEF automated analysis method has clear benefits over traditional methods of processing GPR data. Here are some of these benefits:

  • The depth of the GPR survey is increasing, since the data processing algorithm in the GEORADAR-EXPERT has high noise immunity;
  • One can see changes in the electro physical characteristics within the layers and in the transition zones;
  • There is a significant increasing in formativeness of GPR data;
  • The processing speed of GPR data is significantly increased, which is important for the constantly increasing volumes of GPR surveys;
  • There is an expansion of the scope of application of the GPR;
  • The influence of the so-called human factor is minimized;
  • Provides more opportunities for investigating compound subsurface environments.

The processing options implemented in the GEORADAR-EXPERT software, and which increase the informativeness of GPR data, include the B-Detector method. Method B-Detector (Boundaries Detector) is designed to detect boundaries and increase the vertical resolution of signals of the GPR profile. Possibilities of the method B-Detector: Increase in the frequency of signals of the GPR profile to an acceptable vertical resolution and GPR signals management to exclude interference signals.

The GPR profile in the picture below to the left, was obtained during the survey of the highway by an antenna of 1.2 GHz. The picture on the right is the result of applying the B-Detector method. As a result of signal processing using the B-Detector method, boundaries are better traced, the positioning accuracy of borders is improved, GPR profile is well adapted for automated boundaries picking.

GEORADAR-EXPERT. GPR profile standart processed data.

Along with the analysis of the BSEF, the whole set of standard procedures for processing GPR data is implemented in GEORADAR-EXPERT software: various types of signal filtering, layer boundary tracing, increased resolution of georadar data, and much more. All the features of the GEORADAR-EXPERT software are described in detail in the user manual, which can be downloaded from THIS LINK>>.

The graphical user interface of the GEORADAR-EXPERT software is a combination of tabbed panels. This allows you to quickly switch between visualization modes and control panels for processing GPR data.

In the GEORADAR-EXPERT software there are two modes of the main window of the program - 2D and 3D. The 2D mode is designed to work with two-dimensional data - GPR profiles and sections, created on the basis of the analysis of the back-scattering electromagnetic field (BSEF) of these GPR profiles. The screenshots of the program windows in 2D mode are shown below.

The main window of the GEORADAR-EXPERT with the active tab of the GPR profile display:

ГЕОРАДАР-ЭКСПЕРТ. Вкладка георадиолокационного профиля.

The main window of the GEORADAR-EXPERT with an active tab displaying the amplitude-frequency spectrum of the GPR profile signals:

ГЕОРАДАР-ЭКСПЕРТ. Вкладка частотного спектра сигналов георадарного профиля.

The main window of the GEORADAR-EXPERT with an active tab displaying the section with the terrain correction:

ГЕОРАДАР-ЭКСПЕРТ. Разрез с поправкой за рельеф.

The main window of the program GEORADAR-EXPERT with an active tab displaying the section in the mode of limiting the range of the attribute. In this mode, section areas that have attribute values that are outside the specified range are set to invisible.

ГЕОРАДАР-ЭКСПЕРТ. Ограниченный диапазон значений атрибута для визуализации.

The 3D mode of the main window of the GEORADAR-EXPERT program is designed to display the results of the GPR survey in the form of a 3D assembly of sections created by the results of the BSEF automated analysis of several GPR profiles. These GPR profiles can have different lengths and arbitrary orientations. The figure below shows the main window of the GEORADAR-EXPERT program with the active tab visualization of the volume of the 3D assembly.

ГЕОРАДАР-ЭКСПЕРТ. Визуализация объёма 3D сборки.

The user can manage already existing orthogonal cross-sections of the 3D assembly, create their own sections, save them to a file and load them from the file. The figure below shows the section that the user created and the orthogonal cross-sections of the 3D assembly without displaying the 3D assembly volume.

ГЕОРАДАР-ЭКСПЕРТ. Пользовательское сечение объёма 3D сборки.

In 3D mode, all the necessary options for visualization of a 3D array of georadar information are provided, including the possibility to make the specified range of the 3D assembly attribute values transparent, which allows one to observe the shape and position of one or another anomaly:

ГЕОРАДАР-ЭКСПЕРТ. Режим 3D визуализации.

GEORADAR-EXPERT 3D assembly

Visualization of the boundaries of the layers in the form of isosurfaces clearly shows their position in the volume of the 3D assembly:

ГЕОРАДАР-ЭКСПЕРТ. Ортогональные сечения и изоповерхности.

The main window of the program GEORADAR-EXPERT with an active tab of the horizontal section of the 3D assembly. The section is displayed in a filled contour plot mode:

ГЕОРАДАР-ЭКСПЕРТ. Горизонтальное сечение 3D сборки.

The GEORADAR-EXPERT software, developed as a result of summarizing the long-term experience of processing GPR data, is an effective instrument for resolving the broadest range of tasks in the area of geo radiolocation, including when other software for processing GPR data does not give a positive results.

Using the GEORADAR-EXPERT software increases the competitiveness, both on the regional and world market of geophysical services. We will be glad to see you and your company among the users of the GEORADAR-EXPERT software!

Video tutorials on using the GEORADAR-EXPERT software (more than two hours of training video) can be viewed and downloaded at this link>>

The user manual can be downloaded at this link>>

 

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