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雷达目标的角闪烁及ＲＣＳ的计算，过去采用的方法是用各种简单形状的物体来近似目标的各个部件，再用几何光学法计算这些典型体的ＲＣＳ值。这种方法的明显的缺点是计算的模型与实际目标外形的差别较大，而用几何光学法计算目标散射场，又受到诸多的限制。本文提出的板块元的算法，是用一系列小的平面板元逼近目标外形，使计算模型建立的较为准确，另外，给出了计算任意多边形平板散射场的简化公式，把积分运算化成代数运算。克服了几何光学法只能计算具有双曲率表面的缺点，同时具有计算准确和速度快的优点。
Radar flickering of the target and RCS calculation, the past method is to use a variety of simple shapes of objects to approximate the various components of the target, and then use the geometrical optics method to calculate the RCS values of these typical body. The obvious disadvantage of this method is that the difference between the calculated model and the actual target shape is quite large. However, the geometrical optics method to calculate the target scattering field has a lot of limitations. The algorithm of plate element proposed in this paper approximates the target shape with a series of small flat plate elements to make the calculation model more accurate. In addition, a simplified formula for calculating the scattering field of arbitrary polygonal plate is given, and the integral calculation is converted into algebraic operation . Overcome the geometric optics method can only calculate the shortcomings of hyperbolic surface, at the same time has the advantages of accurate calculation and high speed.