The results of simulation demonstrate that the precision of correlation method is higher than that of zerocrossingmethod when power system is jammed or has lots of harmonics.
通过仿真表明,当电网信号受到较大干扰或谐波含量较大时,相关法的测量精度比过零检测法高。
2
Traditionally, the method of bar code recognition is based on zerocrossing of the second derivative.
传统的条码识别方法是通过二阶导数零交叉来定位条码边界。
3
Wavelet zerocrossing representation is investigated. A new and simple method of reconstructing signal from its wavelet zerocrossing representation is given.