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The issues of estimating systematic errors in setting the angular position of the apparent radiation center of a radar object simulated by a two-point model when using antennas with difference radiation patterns are considered. The dependence of the angular error on the model parameters, such as the spacing of the emitters, the expected position of the apparent center of radiation and the coefficients of the antenna radiation pattern approximation, is established. The angular error of the bearing is determined by including it in the direction finding characteristic of the antenna as a correction to the angular position with further analytical expression. Calculations were performed for the sum and difference directional diagrams, on the basis of which the error values were compared. The ratio of the approximation coefficients for the sum and difference radiation patterns of the antenna is determined. The obtained analytical results can be used in solving applied problems related to the development of matrix simulators and forecasting the accuracy characteristics of simulation complexes.

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