【摘要】 对雷达散射截面计算中的面元噪声问题进行了讨论.在保证足够的计算精度前提下,应尽量减少面元数量,以减小计算机内存开销和计算量.针对目标的外形特点采用适当的剖分模型,可以大大减少面元数量,加快计算速度,同时提高精度.对给定的目标,其尺寸越大,入射波频率越高,需要的剖分面元数量就越多,否则计算精度不能得到保证.对剖分准则进行了讨论,发现了圆柱散射的"转折点",可以获得面元噪声与计算效率的最佳结合.更多还原

【Abstract】 The facet noise in RCS prediciton is studied. A faster speed of computation and a higher accuracy will be obtained with a proper facet model built. For targets having an identical shape, the number of facets increases with the size of the targets and the frequency of the incident wave. The rule for facetization is discussed and some helpful conclusions are obtained.更多还原