查询词典 frequency histogram

In this paper, the Maslov theory was introduced. By τ-p transform, seismic data is transformed from space to ,〖WTBX〗 and phase ( p s, p r ,τ) space. Then it is combined with Born inversion, and deduce the high-frequency asymptotic solution of migration operator amplitude in phase domain.

引人Maslov理论，利用τ-p变换将数据从空间分别变换到和及( p s ， p r ，τ)空间中，并将其结合到Born反演中，推导出了相空间偏移算子振幅的高频渐近解。

According to the forward and inverse results of synthesi zed seismic records, our Q filtrating operator of the depth domain is consis tent with the seismic laws in the absorbing media, which not only considers the effe ct of the media absorbing of the waves, but also fits the deformation laws, name ly the frequency dispersion of the body wave.

在深度域的Q滤波算子符合地震波在衰减介质中的传播规律，不仅考虑了介质吸收对地震波振幅的影响，而且还保证了所造成的波形畸变满足因果规律，即地震体波具有某种频散性质。

The implementation steps are that the seismic data is collected; the Fourier transform is made for the seismic data at a certain time window; a low pass filter operator of the time domain with an interception frequency of FE and a sampling rate of DT is calculated, which is taken as the equivalent N point smooth operator; FE and DT satisfy the equation that FE*DT is equal to X*DF*1.024; the estimate value of the amplitude spectrum of the seismic wavelet and the reverse wavelet are obtained, which are convoluted with the original seismic data; and the deconvolution seismic data of the time window is obtained.

实施步骤是采集地震数据，对某一时窗的地震数据做傅立叶变换，计算截止频率为FE和采样率为DT的时间域低通滤波算子作为等效N点平滑算子，FE与DT满足FE*DT＝X*DF*1.024，进而得到地震子波振幅谱估计值和反子波，再与原始地震数据褶积，得到该时窗的反褶积后地震数据。

If this is not possible, sampling should be done at a Delphi agreed upon frequency and monitored for variation over time/operator/set up.

如果这不可能完成的话，制样应当在Delphi对时间/操作员/建立的变更监控及其频率达成一致的基础上完成。

The frequency characteristics of chaotic system are studied by using Oppenheim's chaotic masking.

利用Oppenheim的混沌伪装方案对混沌系统的频率特性进行了分析。

However, this proposed alteration has a much larger operation bandwidth than the prototype. Additionally, based on our analysis, the fact is found that the balun's outputs are always equal in magnitude and opposite in phase within all frequency ranges, as long as the material is homogeneous.

此外，而在此章节分析中，发现只要实作在均质材料中，其输出在所有的操作频率皆会具有相同的振幅与相反的相位，所以这两种巴伦即使在具有损耗的环境中，仍可正常运作。

Different biases can result in the opposite phase shifts of the impedance with respect to the applied signal. Neutral gas pressure affects the magnitude of the impedance, but does not change the shape of the frequency response curve. In addition, the position of the grid inside the vacuum chamber has little effect on the impedance.

结果显示栅网上的直流偏压对阻抗的影响很大，不同偏压可以使阻抗的频率响应反位相，气压对阻抗的大小有明显影响，但一般不改变频率响应曲线的形状，栅网的位置对阻抗几乎无影响。

Unified explanation of the effects due to Talbot and Montgomery effect is presented in optical path difference between diffraction spatial frequency spectrums.

从成像过程中各衍射频谱分量的光程差，给出了Talbot效应和Montgomery效应的统一解释。

The design problems of the optimal output feedback control system based on the frequency-shaped quadratic functional are discussed

讨论了基于频率成形二次型指标的输出反馈控制系统设计方法，推广了频率成形二次型指标的应用。

Through the analysis of frequency and bandwidth, the optimal excitation position was got to guide the resettlement of the actual source.

通过分析远场子波的主频及频宽得到最佳激发位置，来指导实际震源的安置。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。