1) zero-cross-level
零交叉电平
2) zero crossing shaping circuit
零交叉整形电路
3) level-crossing rate(LCR)
电平交叉率
1.
,the level-crossing rate(LCR) and average duration of fades(ADF) are given.
研究一种扩展的SUZUKI移动衰落信道模型的统计特性,给出该模型包络过程的2个二阶统计量电平交叉率和平均衰落时间的解析式。
4) average level crossing rate
平均电平交叉率
1.
In the selection of combining distributed antenna systems, exact expressions for the average level crossing rate (LCR) and average fade duration (AFD) of the output signal envelope are derived.
对于采用选择合并方案的分布式天线系统,当各分集支路经受独立且不等同分布的复合衰落时,分析了系统合并输出包络的平均电平交叉率和平均衰落持续时间,得到这些二阶统计量的精确表达式。
2.
The probability density function, cumulative distribution function, average level crossing rate and average fade duration of each composite fading channel are analyzed, and some uniform expression.
给出了各种复合衰落的概率密度函数、累积分布函数、平均电平交叉率、平均衰落时间的统一表达式。
5) zero crossing
零交叉
1.
Edge detection of CO_2 arc welding pool image based Bubble wavelet and zero crossing;
CO_2焊熔池图像的Bubble小波零交叉边缘检测
2.
Wavelet zero crossing representation is investigated.
分析了信号零交叉表示方法，给出了新的由零交叉表示进行原始信号重构的算法。
3.
Based on zero crossing representation of wavelet transform of this radial function and matching procedure, a new algorithm to identify orbits of shaft centerline is proposed.
基于此函数的小波变换零交叉表示和匹配过程，得到了识别轴心轨迹的一种新方法。
6) zero-crossing point
零交叉点
1.
For the first frame of the video, the object edge is obtained by an enhanced interactive method; in the remaining frames of the video, a new Snake algorithm is proposed to detect the sharp-angled and concave object contour under the constraint of zero-crossing point, the experimental results of different.
对于初始帧,采用改进的交互方法进行目标的精确定位;在后续帧中,采用零交叉点约束的Snake算法,对具有凹边和尖点特征的复杂目标准确跟踪,获得了理想的实验结果。
2.
The traditional method which uses a threshold to every zero-crossing points to detect salient edges by LOG operator,can filter parts of unconspicuous edges caused by noise,but it can also filter the weak edges connecting to salient edges.
传统的 LOG 边缘检测在对每个零交叉点给定阈值判断其明显度时,将滤掉大部分可能是由噪声产生的弱边缘,但目标中封闭轮廓的弱边缘也可能被滤掉。
补充资料：零息票债券；零券息债券
零息票债券；零券息债券一种以低于票面价值的价格发行的债务工具。债券不支付任何票息；它在到期日是以面值赎回的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条