GRT-2x (GRT-21, GRT-22, GRT-23, GRT-24)

Technical characteristics

Radiated power at the output of the transmitter and receiver up to 100 mW. The number of antennas in the row of exception and transmission modules 8-16-24-32 Scan width in one pass 0.6 to 2.7 m Antenna type Array consisting of lines of broadband antennas, combined type. Degree of deviation of all characteristics not more than 5%

The accuracy of determining the depth of ± 20 mm in the depth range of 200 mm – *

Maximum depth range up to 3m

Possibility of continuous probing at speeds up to 90 km / h

Scan resolution along the antenna line up to 10 cm

Dimensions of the rulers of antenna modules (without brackets) 67.5x50x24 cm, 65x30x15 cm

Weight up to 5 kg (one antenna module)

Supply voltage (from external current) 12-12.5 V.

Power consumption up to 100 W.

Degree of protection IP54

Mean time between two faults of at least 3,000 hours

Ambient temperature (operation) from -15 to 40 ° С;

Relative humidity (operation) up to 80%

The manufacturer reserves the right to change the features and properties of the article, whereby the functional and quality values ​​of the article must be preserved.

* – For a homogeneous environment and with the correct selection of the refractive index of the surrounding medium. Frequency range 0.5-2 GHz


Device function

The device is used for the detection and spatial localization of objects and imperfections that are hidden in various environments (ground, road surfaces, building structures, etc.). Objects and imperfections are recognized whose dielectric permeability differs from the background dielectric permeability. With the software you get the 3D images of the examined room. It is possible to display the 3D images layer by layer as a series of images obtained for different sections of the examined volume along the selected direction, and 3D visualization of inhomogeneities is also possible. Based on the image received, the operator comes to the conclusion that there are destroyed objects and inhomogeneities in dense media.

How the device works

For scanning dense media, an array antenna with distributed receiving and transmitting radio frequency antennas (RF antennas) with the bandwidth that scans the medium from different angles is used. In order to detect and localize inhomogeneities, the mathematical focusing method and the aperture synthesis radar technology are used, whereby all the RF signals recorded by the array are summed in phase for each given focal point with correction of the delay present. Thus, the focusing is done by sequentially summing the received signals while equalizing the pulse time delays controlled by the point with given coordinates. The delays, which correspond to the total time of the signal from the transmitter to the object and back from the object to the receiver, are introduced into the received signal. Then the signal amplitudes corresponding to the calculated delays are added. The result obtained is the point of the radio picture with the corresponding coordinates. After the focusing operation is performed for each point of the selected volume of space, a three-dimensional radio image is created. The focusing operation is carried out in the frequency domain using fast processing algorithms that make it possible to realize three-dimensional tomograms of the examined space in real time.

Brief technical description of the device

The device is a module complex that consists of a unit for generating and receiving high-frequency pulses from linear frequency modulation and a module / array antenna. In addition to the module / array antenna block and linear frequency modulation, the equipment also includes a navigation unit and a control computer. The navigation unit can be implemented together with the RTK GNSS module on optical quadrature encoders. According to the information in the navigation block, further assignments of data to the track of the path covered are carried out. The array antenna has a modular structure. Each module consists of 4 receiving and 4 transmitting antennas for the range from 0.5 to 2 GHz; as well as 8 receiving and transmitting antennas for the range from 2 to 8 GHz. The antenna modules can be cascaded into a line, which extends the range when scanning dense media.

Warranty coverage:

Defects in goods caused by the negligence of a manufacturer, caused by the use of inferior materials in the manufacture or disruption of production technology and during the warranty period and use of the goods. The owner has the right to request the removal of defects free of charge during the guarantee period, including the necessary installation / dismantling of these goods.

Exclusion of the guarantee:

a natural wear and tear;
improper use;
Damage caused by mechanical, chemical or other influences;
Incompatibility with the owner’s expectations in the absence of any damage;
other ancillary costs that arose through or due to a shortage of goods

Obligations of the owner:

If a defect is discovered in the goods, it is necessary to contact the manufacturer of the goods. The owner bears the delivery costs of the goods for the implementation of the guarantee in the service center and back to the owner. As soon as the device arrives at the manufacturer, the current warranty period is interrupted until it is returned after repair, and is added to the warranty period. During the transport there and back, however, the guarantee period runs.

The purchase receipts for the product with the date of purchase must be submitted to the guarantee application.

The exact information about the guarantee period and guarantee conditions for a certain product is given in the delivery contract and is valid.