一、概述沃尔什函数(一般简单表示为WF)系,是一个完备正交系。它与三角函数极其相似,因此与三角函数有许多极其相似的性质。这个函数的代表波形是一系列数字化的序列。自从1923年提出以后,一直未被重视。只到近年来,由于大规模集成电路的出现,以及数字化的广泛应用,用WF来分析和处理尤为显示出他的优点,因此人们对它的兴趣也愈来愈大,它 First, an overview Walsh function (generally expressed as WF) Department, is a complete orthogonal system. It closely resembles trigonometric functions and thus has many very similar properties to trigonometric functions. The representative waveform of this function is a series of digitized sequences. Since its introduction in 1923, it has not been taken seriously. It is only in recent years that interest in it has been growing due to the advent of large scale integrated circuits and the widespread use of digitization, which is especially evident in the analysis and processing of WF