中文说明：
采用镜像延拓方法以解决EMD分解过程中存在的端点效应问题，经过实际测试，较传统EMD方法可有效解决端点效应问题。
English Description：
The mirror continuation method is used to solve the end effect problem in the process of EMD decomposition. Through the actual test, it can effectively solve the end effect problem compared with the traditional EMD method.