An impulse radar, ImRa, is a radio-wave device, inteded for short-range detection of sub-surface objects or boundaries. ImRa consists of a control unit and an antenna unit. Different antennas for different purposed can be used.
The antenna unit is moved above the target area and it transmits continously short pulses to the ground and records the returning signals (echos). The control unit is based on a single-board computer. The measured radar image can be seen on a flat panel display as a two dimensional profile synchronized to the motion of the antenna unit or with a time scale.
The ImRa-system is portable and powered with rechargeable batteries. The radar can be used as a hand-held instrument in the field or mounted on a cart or vehicle for measurements indoors and outdoors. It is based on a single-board computer, which also can be used in heavy environmental conditions and at low temperatures. The measured data can be stored for archiving or post processing in the mass memory of the control unit.
The reflection of radio-waves from a target depends on the target geometry (size, shape and surface roughness) and on the target material difference compared with the surrounding material. The electrical properties of a material can be described with the relative dielectric constant. Looking at the dielectric constant values it can be concluded, that metallic objects should be seen always clearly, also dry objects in wet surrounding or vice versa should be seen and that the water content of a material has a major effect on its electrical properties.
The standard ImRa model is equipped with an antenna of 1 GHz frequency. This antenna is optimised for measuring distances up to 3 m with an accuracy of 1 - 15 cm depending on the material to be measured.
With ImRa you can:
The 1 GHz antenna indicates e.g. the rot or decay in living trees and in power or telephone line poles, the thickness of snow and ice, the location of moisture faults, joists, pipes, cables etc. in concrete, wooden or other structures made of dielectric material.
Also antennas of other frequencies are available: an antenna of 1.5 GHz for more accurate applications and an antenna of 800 MHz for longer measuring distances.
With smaller projects it's possible to Rent ImRa - with our specialist - or the equipment only.
Don't hesitate to contact us!
Tell us what you would like to examine with ImRa, and we'll help you find the optimal combination for you or your company!