| 1. | Transient signal detection ofeeg based on wavelet transform
基于小波变换的脑电瞬态信号检测 |
| 2. | Such system is used to digitize high - speed , wide band signal
该系统适用于对高速、宽带的瞬态信号进行数字化处理。 |
| 3. | Some commonly used methods used for the detection of transient signal ' s arriving point are introduced briefly
介绍了常用的几种瞬态信号波至点检测方法。 |
| 4. | The original intention of my work is to design the apparatus which will be used to inspect the defect of pile foundation
本文讨论的是一个瞬态信号的数据采集系统。本设计的初衷是研制一个桩基础无损检测仪。 |
| 5. | A survey concerned with the wavelet analysis ' s developing history , current situation of generalized functions and the research background of signal ' s arriving points is given
对小波分析的发展简史、广义函数的现状和瞬态信号参数检测的研究背景作出综述。 |
| 6. | Aimed at the property of transient signal such as the short - time characteristic , energy - concentration and so on , it makes a preliminary exploration to the measurement of transient signal " s parameters
针对瞬态信号短时段、能量集中等特点，对瞬态信号的参数检测进行初步的探索。 |
| 7. | This thesis put particular emphasis on the study and application of continuous wavelet transform to the detection of transient signal ' s arriving points . the main works and contributions in this thesis are as follow
本文对连续小波变换在瞬态信号波至点检测中的应用进行了研究，其主要内容可以分为以下几个方面。 |
| 8. | And then based on the generalized function and distribution theory , it presents two corollaries that are relate to singularity detection and the wavelet transform modulus maxima line ( wtmml " s )
结合广义函数与分布理论，提出了两个用于描述瞬态信号波至点检测与小波变换模极大值曲线（ wtmml ' s ）之间关系的新推论。 |
| 9. | By means of the corollary of 3 . 5 which stated that carrying on double wavelet transform to the signal would not change the convergence of modulus maxima line when scale comes to zero , this thesis put forward a new measuring method
当信号中混入较大的噪声时，这种方法仍然可以实现瞬态信号波至点的精确检测。采用matlab及wavelab工具箱对本论文所提出的方法进行设计及仿真研究。 |
| 10. | In vibration test , the signal is always along with noise . if the noise belongs to white noise , fourier transform is very suit to identify and process it , after then remove it . but when there exists low energy impact signal , traditional band pass filter remove noise and the precise position of impact signal is blured
对于白噪声，由于它是稳定信号，所以也可以使用fourier变换定位，以便在合适的频段进行提取。但是对于低能量突变瞬态信号，在信噪比比较低的情况下，由于带通滤波的平滑作用，瞬态信号的位置信息也变得很模糊了。 |
