A statistical model for assessing the effect of position error of antenna elements on array RCS

The rapid development of electronic warfare greatly promotes the importance of the radar cross section (RCS) reduction of array antenna mounted on the combat aircraft. In this paper, the influence of position error of antenna elements on array RCS is studied statistically through mathematical deduction. The random position error submitted to normal distribution is taken as an example to deduce the relation between RCS variation and the tolerance of antenna elements, which provides an effective and direct way to assess the influence of the position error of antenna elements on the stealth performance of the combat aircraft.