Elimination of Interference in Through-Wall Radars

Abstract

The fight against terrorist threats is highly relevant in the modern world. When developing devices for countering terrorism, their reliability and stability are very important. One such device is a device for detecting people behind optically opaque obstacles, which can detect the movement of people behind a wall and determine their number. However, the influence of interference effects that occur when summing up the reflected signals arriving by different propagation paths and, accordingly, having different phase shifts, leads to the fact that the observed image of the target can flicker and even disappear from the device screen for a considerable time, which is unacceptable in combat conditions. This article discusses various ways to eliminate interference, and on the basis of theoretical calculations, the most effective and cost-effective ways to eliminate the influence of interference effects in devices for detecting people behind optically opaque barriers are proposed. The obtained theoretical conclusions are confirmed experimentally.