| 1. | Let us say that this arrival is still visible .
可以这样说，这个波至仍然是清楚的。 |
| 2. | In some cases residuals from these arrivals will stack up to give nearly horizontal alignments .
在某些情况下，这些波至的残余会叠加在一起给出近于水平的同相轴。 |
| 3. | Arrival time curve
波至时间曲线 |
| 4. | 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。 |
| 5. | 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。 |
| 6. | 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。 |
| 7. | The method and theory of time - frequency analysis based on short - time fourier transformation are studied and the wave arrival points of easy component are determined by making software and using time - frequency analysis
研究了基于短时傅里叶变换的时频分析方法理论，并通过编制软件利用时频分析方法确定各组分波的波至点。 |
| 8. | 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。 |
| 9. | The past twenty years saw the significant progress in astronomical observation when new instruments have come online to explore the distant universe across the electromagnetic spectrum and spacecraft have flown to probe the nearby members of the solar system , bringing a new understanding of our universe
过去二十年，天文探测的发展一日千里。由射电波至伽玛射线等不同波段的仪器相继启用，而各类型的太阳系探测器也带来丰富的成果，使人类对宇宙有了新的认识。 |
