通常,波长较短传播较慢—但是破坏性要大的多—的S波会随之而来。 通过这两种波到达时间的差值可以估算震中的距离。
type of waves can be used to estimate distance to the epicenter.
波多斯基认为另一种新技术也许能够带来更小、放射性更低的电站,并避免代一所发生的类似问题。
Podowski believes that another new technology may that uses smaller, less radioactive plants could avoid some of the problems at Daiichi.
提出了一种用于多尺度边缘检测的小波变换滤波器系数的计算方法,并且以具体例子进行了检验,表明了该方法的有效性。
A method of calculating wavelet transformation filter coefficients for multiscale edge detection is given in this paper, and the efficiency of the method is clarified.
由于作为密钥的小波基任意多,且可根据信道情况在不同的小波基之间跳变,故分形调制具有极强的保密性和抗破译能力。
Since wavelet bases as cipher keys are infinite and could be hopped to chose based on different channels, fractal modulations security and the ability of anti-dawning are emphatically expound.
通过模型资料测试,以及近地表反射地震实例叠前资料面波压制试处理研究工作,验证了多线束径向中值滤波方法的可行性和实用性。
The feasibility and effective of the multi-radial mid-value filtering have been verified through some model data tests and suppressing the surface wave in the practical pre-stack seismic data.
算法所用的小波变换相位信息特征对平坦衰落信道具有衰落不变性,对频率选择性衰落信道也具有很强的抗多径能力。
The phase information of wavelet transform used in the algorithm is invariant with respect to flat fading, and can resist multipath fading of frequency-selecting channel in quite a few degree.
本文详细说明了应用GH M正交多小波对地震信号进行去噪处理的原理,并给出实际例子说明该方法的有效性。
The paper elaborated on the principle of noise suppression processing by using GHM orthogonal multi wavelets for seismic signal and gave real examples to show the effectiveness of the method.
多小波可以同时具有对称性、正交性、短支撑性、高阶消失矩等性质,这是传统小波无法比拟的。
Multiwavelet can possess symmetry, orthogonality, short support and high order vanish moments, however traditional wavelet cannot possess all these properties at the same time.
海水的层化导致水波的多色性,而含孔结构改变了波作用场中的物面条件,使波作用减弱。
Stratification will make water waves in ocean multicolored and porous structures, which have different conditions of body surfaces, may cause wave loads diminished.
我国在多波的基础性研究方面还很欠缺,在许多方面还有待加强。
The basic study of the multiwave seismic technique is not enough in our country. There should be a lot to be improved.
本文基于小波变换具有多尺度多分辨率分析的优点,提出了在特定的小波变换分频瞬时属性上,利用局部结构熵算法来检测地震数据的局部不连续性。
Local structural entropy measure in frequency division is put forward to detect local discontinuities of seismic data, by the virtue of the instantaneous attributes based on wavelet transform.
并且,基于冗余小波变换视频编码的框架,提出了一种多描述视频编码新方法,该方法以牺牲少量编码效率为代价,来提高编码系统的传输鲁棒性。
Furthermore, based on the redundant wavelet video coding system, a new multiple description coding scheme is proposed, which can enhance the transmission robustness with low redundancy.
利用纳秒级的非正弦波窄脉冲来传输数据,具有传输速率高、功耗低、安全性好、抗多径能力强以及成本低廉等许多优点。
It has many advantages, for example high transmission rate, low power consumption, good security, robustness to multipath and low cost.
根据不同等级像素重要性不同的特性,采用改进的嵌入零树小波编码方法对预测结果进行多阈值量化。
Considering pixels of different levels have different significance, we utilize improved embedded zerotree wavelet (EZW) to get multilevel thresholds quantization.
多小波变换兼有对称性、正交性、光滑性和有限支撑等信号处理中的十分重要的性质,特别适用于图像的压缩编码。
Multiwavelet possesses such very important properties in signal processing as orthogonality, symmetry, smoothness, and short support, which is specially applicable to image coding for compression.
该方法利用动校正后的CMP及CCP全部角道集,建立多波多参数联合反演方程,进而求解出目的层段的岩性参数。
The method utilizes all the CMP and CCP angle gathers after NMO to build multi-wave & multi-parameter joint inversion equation and calculate the lithologic parameters of interval.
当应用于惯性流形多网格算法和非线性伽略金方法时,可证明类小波增量未知元方法的收敛性。
Convergence of the wavelet-like incremental unknowns method is proved when applied in the inertial manifold multigrid algorithms(IMG)or nonlinear Galerkin methods.
将这种方法用于卫星跟踪卫星,建立了地球重力场逼近的多尺度方法。5 .基于球面小波变换的冗余性,证明了利用球面小波进行重力位逼近具有最小。
Based on the redundancy of spherical wavelet transformation we proved that using spherical wavelet to approximate the earth gravity field has the least square properties.
将这种方法用于卫星跟踪卫星,建立了地球重力场逼近的多尺度方法。5 .基于球面小波变换的冗余性,证明了利用球面小波进行重力位逼近具有最小。
Based on the redundancy of spherical wavelet transformation we proved that using spherical wavelet to approximate the earth gravity field has the least square properties.
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