PROCEEDINGS OF THE RUSSIAN HIGHER SCHOOL
ACADEMY OF SCIENCES

The article discusses a method for simulating extended radar objects distributed along angular coordinates, based on replacing the object with a point, the coordinates of which correspond to the apparent position of the object at any specific time. A matrix simulator is considered as simulation facilities. For considered simulation method an initial data on a modeling object are the distribution functions over the volume of the object of the correlation function of the same and opposite quadrature components of the complex envelope of echo signals from elementary reflectors of the object. Analytical relations are given that determine a position of the object apparent center of radiation and the parameters of the signals supplied to the matrix emitters at any specific time in the simulation interval. The modeling adequacy is estimated by the correlation function and the distribution function of the apparent center of object radiation position. The accuracy of the proposed simulation method is confirmed by the results of numerical modeling of angular noise using the example of the classical multi-point model of a typical distributed object and its replacement «wandering point» formed by the simplest four-point matrix simulator. These results can be used for the synthesis of mathematical models used for developing hardware-software systems for the semi-realistic simulation of electromagnetic fields reflected from distributed objects.

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