The images of glass and plastic bottles filled with water in sand. The minefields are combined as a rule, which means that they include both antitank and anti-personnel mines. The major part of the mines has round cross-section view. In the initial segment of this work, the mock-up of a wide-span mine detector MiRascan, which included, in the capacity of a detecting element, a five frequencies ground penetrating radar receiving signals in two crossed polarities. Some types of the mines contain practically no metal, which substantially impedes their detection.
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Basic features of it were as follows: A general view of the newest model MiRascan mine detector being used during experiments is presented in figure.
The lowest value of the range is related to absolutely dry sand, which is found in the desert. Diagram of mines arrangement in the proving ground.
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The antitank mines have diameter of about mm, jirascan the average diameter of the anti-personnel mine amounts to 75 mm. Mock-up of MiRascan mine detector. Microwave images of mine mock-ups in the examined lane with sandy soil. In the course of further research, the mock-up of the mine detector MiRascan underwent modernization.
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The frequency switching rate is such that it provides for the spatial matching for all microwave images of the GPR separate frequencies and metal detector image. Some types of the mines contain practically no metal, which mirazcan impedes their detection.
MiRascan ground-probing holographic radar that makes it possible to detect and identify slightly deepened up to 20 cm objects by their shape has been developed in the Remote Sensing Laboratory.
The morascan of two PMN-2 antipersonnel mines in chernozem. The major part of the mines has round cross-section view. The principle of the multifrequency sounding of the condensed media construction structures, soils, etc.
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Operating frequency of the metal detector is 2 MHz, and the diameter of the induction loop is equal to mm. As previously mentioned, the induction loop of the metal detector was located on the butt end of the antenna of the ground penetrating radar, which provides spatial coincidence of received images from two channels of the mine detector. At the same time dielectric properties of the ground in the considered frequency range vary within a wide range from 2.
The images of Russian antitank mine type TMM.
RSLab | Projects | MiRascan Holographic Transducer for Mine Detection
The operator via the remote control box, connected to the cart by the cable of 15 m length, exercises control over the movement of the mine detector. The detector’s sensor was installed on the cart, which was set in motion by an operator manually.
In this case the key give-away factor lies in the blasting charges of the mines, the dielectric properties of which differ from analogous characteristics of the ground that covers them. Its signals are received in two polarizations.
The images of glass and plastic bottles filled with water in sand.
In the overwhelming majority of cases er for the ground mirasan the analogous value for the blasting charge. The images of MS-3 booby trap in chernozem.
The minefields are combined as a rule, which means that they include both antitank and anti-personnel mines. The successive reception of signals on each frequency and in both polarizations of GPR and from the metal detector is conducted in the process of scanning the ground surface.
On the lower flange of the GPR cylindrical antenna, the head of the metal detector was installed; On the upper flange of the radar antenna, a generator metal detector block was installed; On the axes of chassis front wheels of the mine detector the electrical motors working in the impulse mode were installed; Remote control system of the mine detector movement was assembled.
Thus, relative permittivity er for the typical explosives is between 3. Power emitted by the generator on each frequency is switched in sequence. The radar has five operational frequencies in the range from 1. It amounts up to 10 mW, which provides for the complete safety of staff. In the initial segment of this work, the mock-up of a wide-span mine detector MiRascan, which included, in the capacity of a detecting element, a five frequencies ground penetrating radar receiving signals in two crossed polarities.