本文提出一种基于子波变换的检测瞬时信号的方法。
Based on wavelet transform, a new method for detecting transient signals has been proposed.
提出了在强噪声背景下检测瞬时信号的到达时间和频率成分的方法。
Then proposes a method to detect the arrival time of instantaneous signal and the frequency composition under strong noise background.
提出了在强噪声背景下检测瞬时信号的到达时间和频率成分的方法。
Then proposes a method to detect the arrival time of instantaneous signal and the frequency compos...
提出了在强噪声背景下检测瞬时信号的到达时间和频率成分的方法。
Then proposes a method to detect the arrival time of instantaneous signal and the frequency composition under strong noise...
提出了在强噪声背景下检测瞬时信号的到达时间和频率成分的方法。
Then proposes a method to detect the arrival time of instantaneous signal and the frequency composition under strong noise background. Theor...
利用光源的脉冲驱动特性，加大了瞬时信号功率，改善了光学传感器对工件表面的适应性。
The instantaneous signal amplitude can be increased due to the impulse drive characteristic of the infrared source, the adaptability to the surface condition of the workpiece can be thus improved.
RTSA的瞬时信号测试功能可以提供其他分析仪上无法提供的显示性能洞察力和分析能力。
The function of testing transient signal of RTSA can provide display performance insight and analysis capability that can't be provided by other analyzer.
双线性时间-频率变换在时间域与频率域都具有较高的分辨率，有利于复杂背景条件下微弱瞬时信号的探测。
Bilinear time-frequency transform possesses a high resolution both in the time domain and the frequency domain. It can be utilized to detect weak transient signal in complex background.
根据研究者的看法，这种鸟群最令人惊讶和异乎寻常的特点是它们可以几乎瞬时的信号处理速度。
According to the researchers, the “most surprising and exotic feature” of the flocks was their near-instantaneous signal-processing speed.
一种检测和存储模拟信号瞬时值的设备。
A device that senses and stores the instantaneous value of an analog signal.
信号的局部能量和瞬时频率都可以从其本征模函数中推导出来。
The local energy and instantaneous frequency of the signal can be derived from the IMFs.
盲源分离的目的在于只利用观测数据把被瞬时线性混合的源信号恢复出来。
Blind separation of sources consists of recovering a set of signals in which only instantaneous linear mixing are observed.
针对电能质量扰动信号的特性，本文采用小波变换对电力系统的高频、瞬时脉冲、电压切痕扰动信号进行检测。
According to features of power quality disturbance signal, this paper detects the disturbance signals of high-frequency, transient impulse and voltage notch with wavelet transforming.
信号的瞬时相位特征与其它特征相比最容易受噪声影响。
The instant phase feature of signal, to be affected, is easily by noise.
常规可控震源都是采用瞬时频率随时间线性变化的扫描信号。
All the conventional vibrators use the sweep signal of which the instantaneous frequency shows linear change with time.
用绝对值电路输出正极性瞬时流量信号。
The positive instantaneous flow signal were transmited by absolute value circuit.
本文研究了非平稳随机振动信号的瞬时功率谱。
The instantaneous power spectrum of nonstationary random vibration signals is discussed in this paper.
根据跳频信号瞬时带宽，将潜在跳频频率点邻域时频图投影到时域，分选潜在频率跳变点集合。
The potential temporal hopping point set is fetched from the temporal projection variance of the adjacent domain time-frequency image according to the instantaneous signal bandwidth.
在许多实际问题中，信号瞬时参数的提取有重要意义。
In many practical fields, it is quite important to extract the instantaneous parameters of a signal.
提出一种利用瞬时转速信号在线监测汽车发动机各缸工作不均匀性和失火故障的方法。
This paper proposes a technique for on line detection of cylinder-to-cylinder nonuniformity and incipient misfire by instantaneous angular velocity signals in automotive engines.
该文研究了应用WVD谱峰检测估计AM - FM信号的瞬时频率的方法及其性能。
In the paper, the method to estimate instantaneous frequency of AM-FM signals using the peak of the WVD and its performances are studied.
宽带雷达对抗侦察数字接收机具有较宽的瞬时频率覆盖特性和较高的截获概率，并能处理同时到达的多个信号。
Wide frequency spectrum can be received and high probability of intercepting can be got and the simultaneously attend signals can be processed by wide band radar EW reconnaissance digital receiver.
通过数字模拟实验与齿轮箱故障信号检测，验证了新的双线性时间-频率分布对复杂信号中瞬时分量的探测效果。
By digital simulation and detection of gearbox fault signal the detection effect of the novel bilinear time-frequency transform is validated for the transient components in complex signal.
分析了信号数字调制的基本原理，提出一种基于信号瞬时特征参数的数字通信信号解调方法。
The principle of digital modulated signal is analyzed in this paper. Based on instant character parameters, a kind of digital communication signal demodulation method is established.
电力计量直接的对象是电子互感器，IEC标准统一规定了电子互感器的两种输出方式：数字瞬时值序列和模拟电压信号。
The direct object of power metering is electronic transformer. From IEC standards, electronic transformer has two kinds of output: digital signals and analog signals.
通过对信号进行基于瞬时自相关的瞬时频率提取的方法对中频信号进行分析、识别，然后可以在FP - GA内部构造一个多通道匹配滤波器对信号进行匹配。
The article analyses the signal through the method of gaining instant frequency on the base of instant correlation, then we can make up a multicenter matching filter in the FPGA.
该方法源于瞬时频率的概念，它能把动态信号的局部特征正确地在时频域内予以描述。
It stems from the concept of instantaneous frequency, and it can describe accurately the local properties of dynamic data in the time-frequency plane.
在对LF M信号实现分选的基础上，选取待识信号的瞬时频率作为识别特征，利用最近邻方法对信号进行识别。
Supposing the LFM signals had been sorted and selecting the instantaneous frequency as identification character, the closest method is used to distinguish the signals.
研究指出，传统方法确定的层裂强度测定方程仅仅可能对采用瞬时层裂准则得到的数值模拟的层裂信号有效。
It is indicated that the spall strength equations determined by the traditional methodology are valid only for the numerically simulated 'pullback' by a local instantaneous critical stress criterion.
通信信号的瞬时参数包含丰富的信息，提取瞬时参数具有很重要的意义。
The instantaneous parameter estimation for communication signals is very important, for such parameters are abundant of information.
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