Electromagnetic analysis in the ship RCS plastics design

In this paper, setting out from typical structures — metal plate, and discussing the relation of RCS with incident angle, frequency of radar wave, and geometry of metal plate, the formula, which characterizes the RCS of the plate with inclined angle, has been derived by physical optics theory. Through the formula, the optimal inclined angle can be determined at single frequency and multiple frequencies. Also, an example is presented to illustrate how to make a compromised design according to formulas considering stealthy of the ship and volume of the cabin. The results are significant to the stealthy design of ship.