This method enhanced the measuring accuracy by using the methods of wave head counting and zero-cross detection, and it implemented 3-d positioning with triangle square wave.
该定位系统采用波头计数与零交叉点检测的方法来提高超声测距精度，并通过三角形方法来实现三维定位。
One of the goal of this type of frameworks is to give a desktop like user experience with the advantages of zero-deployment and cross-browser compatibility.
此类框架的优点是免部署和浏览器兼容，目的之一是达到桌面应用般的用户体验。
In addition, line mode and zero-mode voltage wave cross each other at the point of fault which causes the natural frequency "aliasing".
此外，故障电压行波于非对称短路点发生线模与零模行波相互交叉透射，致使故障电压自然频率“混叠”。
An improved method which measures frequency through the slope of zero based on the cross-zero detecting is presented.
因此提出了一种改进的过零检测算法：零点斜率测频法。
The zero cross point voltage comparing method (ZCPV method) developed by the authors can meet the above mentioned requirements.
文章作者研究开发的过零点电压比较法（ZCPV法）已能够满足这一要求。
非常低的过零触发电压。
As this kind of microstrip hairpin filter does not require cross coupling between the non-adjacent resonators of the filter to obtain transmission zero, the design procedure of the filter is simple.
由于这种类型的微带滤波器实现传输零点不需要通过滤波器非相邻谐振器间的交叉耦合来获得，因此，设计过程非常简单。
A format conversion from a non-return-to-zero (NRZ) signal to return-to-zero (RZ) signal is presented based on four-wave mixing (FWM) and cross-phase modulation (XPM) in a silicon optical waveguide.
基于硅光波导的四波混频(FWM)和交叉相位调制(XPM)效应，提出非归零码(NRZ)到归零码(RZ)的光调制格式转换。
A move above zero would be used as a buy sign, while a cross below zero can be used as a sell signal.
向基准线之上的移动被认为是买入信号，向下则为卖出信号。
It features simple and accurate displacement variation, ability in cross-zero operation and fast response and is suitable for transportation vehicles and construction machinery applications.
它具有机构简单、变量准确、能够过零点操作以及响应速度快的特点，适用于运输车辆及工程机械等场合。
A fast location algorithm using classifying shrinkage in parameters space and a feature extraction method using improved wavelet cross-zero detection is presented.
提出了参数空间分级收缩的新的定位算法及其改进的小波过零检测的特征提取算法。
If the two signals are random, the cross-correlation is zero.
倘若两个信号都是随机的，则互相关系数为零。
If the two signals are random, the cross-correlation is zero.
倘若两个信号都是随机的，则互相关系数为零。
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