Quadratic Method of the Angular Resolution of Two Closely Spaced Targets

Resumo

A method for the formation of measurements of the angular coordinates of two closely spaced point targets by four independent receivers located at the same distance from each other is proposed. It is shown that the target angles are determined by the fixed points of some linear fractional transformation and can be found by solving a quadratic equation with complex coefficients. A method for calculating the accuracy of measuring the angular coordinates and a criterion for target resolution are substantiated. Results of numerical analysis on a model example are given. The method is designed for measuring the angular coordinates of two closely spaced targets and the elevation angle of a low-flying target against the background of the underlying surface (marine or terrestrial), as well as for measuring the coordinates of the target under the conditions of active interference.