signal period

Secondly, the cyclostationary property of output signal is discussed, when a stationary ( or cyclostationary) signal passes a linear period time-varying ( or time invariant) system.

其次，研究了平稳（或循环平稳）随机信号通过线性时不变（或周期时变）系统后输出信号的循环平稳性质。

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A counter with timing fiducial oscillator acts as a frequency multiplier, and the count value in the prior period is taken as the reference for the current period to give the decimal part of a signal period.

该方法利用带基准时基的数字计数器实现周期内线性细分，当前周期信号将前一整周期的倍频数作为参考构成信号周期的小数部分。

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In the case of the noises modulated by the bias signal, the stochastic resonance of a single-mode laser driven by two colored noises with time period modulation correlation intensity is investigated.

在噪声受偏置信号调制的情况下，讨论色噪声之间的关联受时间周期调制所驱动的单模激光系统中的随机共振。

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To reduce the switching losses of IGBTs in PWM rectifier, a third order square wave is added to the phase voltage control signal on the basis of the Improved Period Average Model. This new control algorithm leads to no switching in about 1/ 3 cycle.

为降低PWM整流器的开关频率，本文在整流器的改进周期平均模型基础上，在相电压控制信号中叠加三次方波信号，使得整流器中的开关管有1／3时间不动作。

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An Analytic estimative formula of FFT leakage error for non-integral period sampling is analyzed and derived and in the case of the input signal including fundamental wave and higher harmonics, a new calculating method of realizing the self-adaptive Integral period sampling with FFT iterative calculation is obtained.

分析推导了非整周期采样时FFT泄漏误差的解析估计公式，得出了在输入信号含基波和高次谐波分量的情况下，利用FFT迭代计算来实现自适应整周期采样的一种新算法。

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In all systems the homing head has to remain stabilized in space during a period when there is no guidance signal.

在所有系统中，当没有任何制导信号时，导引头必须在空间保持稳定。

词典精选例句

This paper describes a measurement method which is by increasing the counting of the pulse rate greatly through extending high speed counter outside of a general single chip microprocessor, accomplishes high accuracy and high resolving power measurement of signal's frequency and period, and provides practice examples.

本文叙述了普通单片机通过外扩高速计数器，大大提高系统定时器／计数器的计数脉冲速率，实现高精度、高分辨率的信号频率及周期的测量方法，并给出了应用实例。

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Then the speech signal is pitch adjusted according to this pitch contour, where the original signal with time varying pitch period is converted to a signal of constant pitch period.

然后根据这一轨迹对语音信号进行基音调整，将原始的、具有时变基音周期的信号转化为一个具有恒定基音周期的信号。

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A Signal Analyzing Algorithm of Liquid Level Radar Based on Full Period Adaptive Sampling

基于整周期自适应采样液位雷达信号处理算法

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In this method the opening operation of rectified signal's absolute value is performed to filtrate the spike noise, then the dilation operation of flat structuring element, whose length is one half of the period of power frequency, to extract the magnitude characteristic of the signal;

该方法先对整流信号（取绝对值以后的信号）进行开运算以滤除尖峰噪声，再用长度为1/2工频周期的扁平结构元素进行膨胀运算提取其幅值特性；

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