查询词典 wavelets

According to the variance module and resolution after deconvolution, the ideal mixed phase wavelets may be extracted from the wavelet gatherings with the same amplitude spectrum and different phase spectrums finally. Therefore the target for raising the resolution of seismic records can be attained by the determinacy wavelet deconvolution. Through the wavelet extraction tests for theoretic synthetic records and actual seismic data and the processing of enhancing resolution of seismic data by use of the wavelets extracted, it was shown that such a method is correct and effective.

依据反褶积后地震记录方差模大小和分辨率情况，最终从一系列相同振幅谱不同相位谱子谱集合中确定理想的混合相位子波，通过确定性子波反褶积达到提高地震记录分辨率的目标对理论合成地震记录和实际地震记录进行了子波提取实验，并利用提取的地震子波对地震资料进行了提高分辨率的了处理，实验结果表明了该布法约正确准和有效性。

The quasi wavelets method introduce regularizer and make the scale function regularity and localization attributes. A meshless method and a quasi wavelets method based on the natural boundary integral equation in this paper are presented. Corresponding formulas are developed for the implementation of the present method.

本文提出的自然边界元的无网格方法是将无网格方法与自然边界元方法相结合，使其不仅具有自然边界元的降维及计算便捷、稳定等优点，而且还具有无网格方法的只需节点信息、不必划分网格、后处理方便等优点，这使该方法在处理高维问题上计算简捷。

The symmetric property and compact support are incompatible for orthogonal wavelets in function space, whether the properties of discrete orthogonal wavelets can be compatible is still unknown.

函数空间中正交小波的对称性和紧支性不能兼容，而离散空间中正交小波的性质能否兼容仍然是一个未知的问题。

The conditions of the filters that should be satisfied are also derived. By analyzing the transformation structure of orthogonal wavelets and biorthogonal wavelets, the data acquisition method based on multichannel structure is proposed. The compensation method is discussed, and the design method of compensation filters is also derived.

在分析了正交小波与双正交小波变换的结构的基础上，利用多分辨理论的性质，提出了基于小波方法的双通道及多通道数据采集方法，最后对这种结构中可能存在的误差的补偿方法进行了研究，得出了去除误差的滤波器设计公式，从而完成信号的采集与恢复。

First of all, the basis of the MRTD method is studied. In Chapter 2, waveletsanalysis and multiresolution analysis, the mathematical basis, are introduced, and thecharacteristics of the wavelets basis functions, including orthonormality, compactsupport, multiresolution and so on, are also introduced. The advantages of theapplications of these functions to the numerical electromagnetic calculations arediscussed. In Chapter 3, the algorithm basis of MRTD: the combination of the waveletsand the method of moments is studied. This Chapter shows that the MoM basedMRTD method is the combination of wavelets and MoM using Galerkin sampling.

文中首先讨论了 MRTD 的建立基础，其中第二章介绍了其数学基础－小波分析及多分辨分析，讨论了小波基函数的性质包括正交性、紧支撑性、多分辨性等及其应用于电磁场数值计算的优势；第三章讨论了其算法基础－小波与矩量法的结合，阐述了以矩量法作为算法基础，以 Galerkin 离散采样的方式与小波函数结合而产生了 MRTD。

In this thesis, the main problem investigated is the characterization of the image space in the wavelets transform by making use of the relationship between wavelets transform and the theory of reproducing kernel.

利用小波变换像空间与再生核空间的联系，本文主要研究了小波变换像空间的描述问题。

In Chapter 5, the algorithm theory of the MRTD method is discussed, and the deduce of MRTD is consummated and the frame of MRTD is constructed. And this Chapter deduces the detailed formula using Battle-Lemarie wavelets and Harr wavelets, respectively.

接着第五章讨论了 MRTD 的理论原理，补充和完善了 MRTD 的推导，构建了 MRTD 的基本框架，并分别以 Battle-Lemarie 小波和 Harr 小波为例推导了详尽的迭代公式。

In Chapter 5, the algorithmtheory of the MRTD method is discussed, and the deduce of MRTD is consummatedand the frame of MRTD is constructed. And this Chapter deduces the detailed formulausing Battle-Lemarie wavelets and Harr wavelets, respectively.

接着第五章讨论了 MRTD 的理论原理，补充和完善了 MRTD 的推导，构建了 MRTD 的基本框架，并分别以 Battle-Lemarie 小波和 Harr 小波为例推导了详尽的迭代公式。

The integral ranges are limited while the standard wavelets are defined on the whole real line. The wavelets defined on special intervallic are required.

由于积分区域是有限的，而标准小波是定义在整个实轴上的，因需要构造一个定义在特定区域的小波，以求解积分方程。

Compared with scalar wavelets, multiwavelet offers simultaneous orthogonality, symmetry and short support, which is not possible for scalar wavelets, and it plays an important role in the signal processing. Especially in increasing identification efficiency and reducing misdeem ratio of aviation picture in military reconnaissance, multiwavelet plays a more important role.

多小波技术把十分重要的光滑性、对称性、正交性、有限支撑等完美地结合起来，弥补了单小波的不足，为信号处理领域开辟了新纪元，尤其在提高军方侦察航空图像的判读效率、减少误判率方面更具有十分重要的意义。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。