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当机场噪声等值线生成后,需对其进行光滑处理,提出一种改进的三次B样条算法,该算法是在三次B样条曲线光滑的基础上改进此方法不经过型值点的缺点。通过反求型值点的控制顶点,由新产生的三次B样条曲线插值处理得到更多的等值点,从而既得到光滑等值线,又使光滑后的等值曲线经过每一个型值点。
When the airport noise contour is generated, it needs to be smoothed. An improved cubic B-spline algorithm is proposed. This algorithm is based on the smoothness of cubic B-spline curves, . By inverting the control vertices of the value points, more equivalent points are obtained by interpolation of the newly generated cubic B-spline curves so as to obtain both the smooth contour and the smoothed contour through each type of value point.