Angle error simulation for phased array radar system

The principle 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 has been 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. The turret is trainable in azimuth and elevation: the radome is a fixed, metal space frame design. Using fractal theory, the dynamic system angle error of a phased array over mechanical scan of the turret and electronic scan of the array is obtained. It is noted that 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 and in support modes.<>