DEVICE TO INCREASE ANGULAR RESOLUTION OF A MONOIMPULSE RADAR UNDER THE CONDITIONS OF NOISE INTERFERENCE

摘要

The proposed device belongs to the field of radio engineering and can be used in single-pulse radar systems, which search and follow the angular coordinates of objects under the influence of intentional continuous noise interference. The device to be investigated in the direction of finding the source of a pulsed signal masked by noise interference, under conditions when the difference in the angular coordinates of the sources is less than the beamwidth, and the intensity of the interference exceeds by an order of magnitude or more the intensity of the useful signal, makes it possible to detect it with a high probability. In this case, it is possible to estimate the range of the signal source to within the resolution element, as well as to measure the angular coordinates of both sources with an error that depends on the intensity of their emissions and the mutual angular position. When finding a single source of radiation (pulse signal or noise interference), the device allows to ensure a significant decrease in the envelope duration along the angular coordinate. This creates the conditions for a significant increase in the accuracy of bearing measurement of the object. The paper considers the results of the investigation of the signal processing algorithm, performed by the method of statistical simulation on a computer. For characteristic cases, graphs and types of the angular-range-ranging relief of the output signal are given, their analysis is analyzed, quantitative estimates of the statistical quality indicators of the algorithm are given, and features of practical implementation are noted. This creates the conditions for a significant increase in the accuracy of bearing measurement of the object. The paper considers the results of the investigation of the signal processing algorithm, performed by the method of statistical simulation on a computer. For characteristic cases, graphs and types of the angular-range-ranging relief of the output signal are given, their analysis is analyzed, quantitative estimates of the statistical quality indicators of the algorithm are given, and features of practical implementation are noted. This creates the conditions for a significant increase in the accuracy of bearing measurement of the object. The paper considers the results of the investigation of the signal processing algorithm, performed by the method of statistical simulation on a computer. For characteristic cases, graphs and types of the angular-range-ranging relief of the output signal are given, their analysis is analyzed, quantitative estimates of the statistical quality indicators of the algorithm are given, and features of practical implementation are noted.