Shielding, Radioabsorbing and Scattering Materials for Decreasing of Disturbances and for Enhance of Efficiency of Radar Work

Georadar of OKO-M1 type working at 400 MHz central frequency in combinations with different type of radioshielding and scattering materials have been studied to determine a possibility of an improvement of noise immunity and functional characteristics of georadar at various conditions. A number of experimental georadar covers of several types based on radioshielding, radioabsorbing and scattering materials has been produced and tested. The investigations have confirmed the fact that usage of a shielding cover is useful both for suppression of interference with up-land objects and for decrease of aerial disturbances. We found that such georadar cover can decrease a level of the aerial interference disturbance up to 30 dB, and undesirable signal reflected from a metal object placed near over georadar can been decreased on a value of 15...23 dB. A scan picture becomes more clean and readable when georadar shielding cover is used