Two main updates of 3D penetrating radar: deeper detection depth and smarter data analysis

In 2001, the three-dimensional ground penetrating radar test technology based on the stepped-frequency antenna array technology was first proposed and received worldwide attention. In the next 20 years, 3D-Radar has continued to develop and improve, and has developed to the fourth generation host, three series of antenna arrays (DX series air coupled antenna array, DXG series ground coupled antenna array and DXV released in 2020 A series of deep ground coupled antenna arrays), the third-generation data processing software (independent research and development , integrated GPS, high-definition images, radar images equal to one, and has rich processing tools).

So far, nearly one hundred three-dimensional ground penetrating radars have been sold worldwide. Earth Products China Ltd. had been committed to leading advanced technology, and currently there are nearly 20 3D ground penetrating radars in use in China. Many well-known research institutions have introduced 3D ground penetrating radar to carry out research work.

The research including:

The Federal Highway Administration (FHWA) and the National Center for Asphalt Technology (NCAT) jointly completed the SHRP 2.0 R06D research project, which is non-destructive testing technology to identify delamination of asphalt pavement structures.
The German Federal Highway Research Institute (BASt) uses a variety of equipment such as three-dimensional ground penetrating radar and falling-weight deflectometer to test the performance changes of the pavement structure after accelerated loading.
The Research Institute of the Highway Ministry of Transport and the Beijing Road Engineering Quality Supervision Station jointly use the 3D ground penetrating radar to conduct regular inspections on the full-scale ring road of the Ministry of Transport's Highway Traffic Proving Ground and carry out data accumulation for long-lasting pavement research in China.
Shandong Transportation Research Institute, Liaoning Traffic Science Academe, South China University of Technology and other units have successfully implemented engineering applications using 3D ground penetrating radar in the survey of old roads, design of maintenance schemes , and evaluation of the uniformity of new pavement construction. The Shandong Transportation Research Institute published the book "Application Guide for 3D Ground Penetrating Radar Technology for Roads".
China Airport Construction Group Corporation has used 3D ground penetrating radar to carry out defect detection for airport runways across the country for many years, including the completion acceptance inspection of Beijing Daxing International Airport.

3D-Radar is also constantly exploring three-dimensional ground penetrating radar technology to improve the new application. Three-dimensional ground penetrating radar is already a research tool and will be used in large-scale engineering in the future.

3D-Radar has officially released DXV deep ground coupled antenna array and ExaminerTM 3.3 special analysis software for 3D radar data in March 2020.

In order to further expand the application range of 3D ground penetrating radar, the new ground-coupled antenna array will deeper the detection depth to about 3-4 meters. The radar image in deep areas will be clearer, easier to interpret data, and more suitable for testing cities' defects of the soil subgrade under the pavement structure.

Example 1

Comparison of test results within 4 meters of the underground structure (traditional DXG antenna and new DXV antenna)

Example 2

Comparison of test results within 4 meters of the underground structure (traditional DXG antenna and new DXV antenna)

ExaminerTM 3.3(special analysis software for 3D-Radar)

Examiner TM 3.3 makes data processing, analysis and inspection easier. Examiner TM 3.3 is designed and optimized to process large amounts of high-resolution data on an ordinary PC, and improved speed and usability.

It is the perfect combination of GPS positioning information, DMI mileage information, HD high-definition digital images and GPR radar data.

Special data processing template for road defect identification, which can quickly and automatically process large data files.

Map overlay

Examiner TM provides a map top view function: it can display radar horizontal slices of different depths on a geographic coordinate reference map. This realistic display makes data interpretation easier. Data geo-reference is based on advanced GPS information filtering to ensure the best accuracy. ExaminerTM provides global maps and satellite images by integrating Bing Maps (Bing Maps), and can also receive images by connecting to Tile Map Service (TMS) or WEB Map Service (WMTS) . ExaminerTM can import geo- referenced images from any projection such as aerial photography, satellite images, maps, etc. to quickly and accurately place GPR data in the surrounding environment.

Annotation and 3D interface tracking

ExaminerTM provides a powerful and user-friendly tool for drawing points and multi-segment annotations. Users can work seamlessly on the geographic location overview map and the three views, creating and editing annotations across different cubes. ExaminerTM uses advanced automatic and semi-automatic tools to achieve layer interface tracking on 3D data. With a single click, layer interface tracking can be performed on a few kilometers of data and the entire scan width. The tracked layer interface can be displayed as a color-coded overlay of the data to indicate the depth of the layer or the amplitude of the reflected signal.

Deep slices show archaeological evidence of 100×100m area, the processed data image is exported to KMZ format and displayed on Google Earth.

Export and expand

You can directly copy images from Examiner TM and paste them into other programs for writing reports, or save them in conventional image formats. You can also record a geographic overview map to show how the radar data changes in depth. The processed data can be exported in SEGY and ASCII formats, and you can use other third-party software for additional processing, analysis, and creating report. Annotations, layer interfaces, and data images can be exported as geo-referenced images along with the rendered GPS data, and are compatible with common software such as GIS (GeoJSON), CAD (DXF/DWG), and Google Earth (KMZ). The layer interface can also be saved as a simple data matrix or a point cloud with comma-separated value files, or a comprehensive report with detailed statistical summary.

For more information, please contact Earth Products China Limited .
Service hotline: 400-700-9998
Email: marketing@epc.com.hk
Official website: en.epccn.com