Investigation of the Music Super-Resolution Algorithm for the Tasks of Measuring the Angular Coordinates of Low-Flying Targets

The present work touches upon an actual problem to this day – measuring the angle of a low-flying radar target. The urgency of the problem lies in the fact that as a result of unauthorized flights of aircraft at low and extremely low altitudes can lead to flight accidents. However, modern means of measuring angular coordinates are not able to provide the necessary accuracy. This is due to the fact that as a result of the flight of an aircraft at low or extremely low altitude, the probing signal, reflected from the probed object, is scattered by the underlying surface. Due to the small difference in the course of the beams of signals reflected along a straight path and from the underlying surface, the time of their arrival is almost the same, which causes a superposition of signals from different directions. Thus, we observe a rugged phase front, which does not allow us to unambiguously determine the direction to the probed radar target. To this day, this problem has no unambiguous solution, but the rapid growth of computing power has made it possible to conduct semi-natural studies of the algorithms being developed in the laboratory. This caused an additional surge of works devoted to this topic. The article deals with the issue of determining the limits in which, using the MUSIC algorithm, it is possible to unambiguously resolve the probed radar target and its antipode.