two-dimensional spectrum

Using two-dimensional spectrum to analysis of sound field .

利用二维谱来分析声场。

To Analyze the Disadvantages of the Existing Television System with Two-Dimensional Spectrum of Images

从图像的二维谱分析现行电视的缺陷

Numerical Calculation and Analysis on Two-Dimensional Spectrum for Acoustic Wave Propagation in a Borehole

井孔声场二维谱的数值计算与理论分析

Optical Systems of Two-Dimensional Spectrum Polychromators

二维光谱多色仪光学系统的分析

The two-dimensional spectrum in wave-number and frequency domains is also calculated and compared with the result of numeric simulation with 2.5-D finite difference method , and a consistent result is obtained .

对接收波列作了二维谱处理并和应用有限差分法得到的相应结果作对比，获得了比较一致的结果。

Bit Error Performance of Two-Dimensional Spread Spectrum System for AWGN Channels

AWGN信道中二维扩展频谱系统的误码率分析

A New Method of Two-dimensional Spatial Spectrum Estimation based on ESPRIT Using Combined Array

一种新的二维空间谱估计方法&二维组合阵列ESPRIT

Blind Synchronization of Two-Dimensional Spread Spectrum System without Knowledge of Spread Spectrum Matrix

无扩频矩阵知识二维扩频系统的盲同步

An Approach to High Resolution Space-Time Two-Dimensional Signal Spectrum Estimation Based on Eigenstructure Decomposition

基于特征分解的高分辨时-空二维信号谱估计

The two-dimensional response spectrum results are contrasted in different space combination of SRSS and 30 % principle .

对比了SRSS和30%不同空间组合原则下的双向反应谱结果。

An analysis of the DFT received signal of two-dimensional spread spectrum system shows that the received signal has trilinear model characteristics .

对二维扩展频谱系统的接收信号经过IDFT（离散傅里叶反变换）模块后的信号进行分析，表明此信号具有三线性模型特征；

In relation to one dimensional load spectrum , fatigue life under two-dimensional load spectrum is smaller and fatigue life considering load distribution along contact line is smaller .

相对于单工况一维载荷谱，考虑齿间载荷修正的一维载荷谱和多工况合成的二维载荷谱下齿轮的疲劳寿命都有较大降低，在疲劳寿命预测时应引起足够的重视。

Forward and inverse numerical experiment from different saturation in Oil-Water and Gas-Water phase shows that the inversion of two-dimensional Oil-Water spectrum and two-dimensional Gas-Water spectrum fit each other well .

不同含油和含气饱和度油水和气水两相的正反演数值实验表明，反演出的二维油水谱和二维气水谱与构造的二维油水谱和二维气水谱符合得很好。

Starting from the spectral equation , considering an AGW force with two-dimensional Gaussian spectrum at lower boundary and by using differential method , the AGW spectrum at higher level is calculated .

由谱方程出发，考虑低边界上的声重波强迫为高斯谱型，采用差分方法，我们计算了ω-KH二维空间中的高层谱响应。

The experiments and analytical results indicate that not only the anisotropy of 3D surface texture , but also the influences of various wavelength on the surface amplitudes can be characterized by two-dimensional power spectrum .

结论表明，二维谱分析技术可以表征表面纹理的方向性和不同波长对表面粗糙度高度均方根的影响。

The two-dimensional fiber spectrum data processing is an important part of the astronomical data processing . It directly affects the follow-up spectral analysis and celestial target recognition , and it is an important way to the astronomical community to obtain various kinds of astrophysical information .

二维光纤光谱数据处理是天文数据处理的重要组成部分，它直接影响到后续的光谱分析与天体目标识别，是天文学界获取各类天体物理信息的重要途径之一。

In order to improve the transmission speed and decrease the BER , it synthesizes the technology of orthogonal frequency division multiplexing ( OFDM ), two-dimensional spread spectrum ( time and frequency domain ) and CDMA , which are the core technologies of high-speed communication .

它的理论基础是在正交频分复用（OFDM）基础上，通过引入时域、频域二维扩频和CDMA技术来提高系统传输速率并降低误码率（BER）。

The Experimental Methods and Applications of Two-dimensional Carbon-13 NMR Spectrum

二维碳&13核磁共振谱的实验方法及应用

The analysis and research on the statistical method for two-dimensional random load spectrum of vehicle transmission are presented in this paper .

本文对传动系多工况二维随机载荷谱的统计方法进行了分析与研究。

Compilation of two-dimensional fatigue load spectrum

二维疲劳载荷谱的编制

This paper derives the two-dimensional point target spectrum for an arbitrary bistatic synthetic aperture radar configuration .

本文采用级数反转的方法，对任意收发分置合成孔径雷达的两维点目标频谱进行推导。

Hybrid Two-dimensional Correlation Infrared Spectrum of Reversibility of Thermal-induced Phase Transition of Poly ( N-isopropylmethacrylamide ) in Aqueous Solutions

溶液中聚（N-异丙基-2-甲基丙烯酰胺）热相变可逆性的杂合二维相关红外光谱研究

Considering the large scene , the change of the slant range is analyzed in details . Then , the two-dimensional point target spectrum is derived by the method of series reversion .

考虑到大场景下的距离空变问题，对目标斜距随时间的变化关系进行了详细的分析，并结合级数反演法得到了弹载SAR回波信号的二维频域的精确表达式。

To study its influence on air-to-water sound transmission , a two-dimensional fast field program model is derived using two-dimensional horizontal wave-number spectrum . To reduce the calculation burden of the two-dimen-sional FFP , a one-dimensional FFP is derived based on far field approximation .

在基于传播矩阵的快速场模型基础上，可得出计算运动介质中声传播的二维快速场模型FFP2DM，和远场近似条件下的一维快速场模型FFP1DM。