Angle error simulation for phased array radar system

The principal contributors to angle error in a phased array are evaluated and formulas are developed for statistical modeling of these error sources. A comprehensive computer program is developed for determining the angle error of a phased array. Based on the present phased-array design, the angle error model includes systematic and random errors in the phased array situated on a turret inside a radome. Using fractal theory, which is a technique developed for data reduction in image processing, the dynamic system angle errors of a phased array over mechanical scan of the turret and electronic scan of the array are obtained. These values represent excellent equipment performance in terms of fractional parts of beamwidths and will contribute to improved estimates of overall system performance in track, phased derived range (PDR), and interceptor support modes.