Results of using ground penetrating radar with a controlled radiation pattern

Currently, ground penetrating radars with a fixed antenna-feeder pattern are widely used in geology and engineering geophysics. However, some devices can perform measurements with antennas in different frequency ranges. The developed model of a ground penetrating radar with a controlled directional pattern of the main lobe of the receiving antenna allows for measurements of several routes at one point using antennas of different frequency ranges and with control of the directional pattern.

Preliminary results of subsurface profiling using a ground penetrating radar with a controlled receiving antenna pattern have been presented. Radargrams and their features, useful for detecting low-contrast environments and various point and linear objects, have been presented. Depending on spatial capabilities and technological limitations, sequential or parallel arrangements of transmitting and receiving antennas are possible. Using ground penetrating radar with the proposed beam control method allows for the acquisition of multiple radargrams with different phase and amplitude characteristics during profiling of the target environment. This provides the operator with additional information for interpreting the profiling results. Regular measurements at various sites contribute to the deep ground penetrating radar database.

New signal processing algorithms and interpretation methods have been developed, increasing the ability to detect low-contrast objects. Based on multi-faceted measurements (changes in the radiation pattern, changes in receiver gain) at a single point, preliminary algorithms and models have been developed for constructing a three-dimensional model of the profile being studied.