本文将分析体全息存储通道中存在的各种噪声来源。
In the paper, we analyze the noise source of recording channel in volume holographic storage, and produce the noise mod - el.
利用点扩展函数对体全息成像系统的深度分辨率进行分析。
Its imaging resolution was analyzed by using the point spread function of volume holographic imaging system.
在三维体全息信息存储中，全息图叠置将引起信息读出噪音。
Superimposed holograms in 3-dimensional volume holographic storage will introduce noise into the readout messages.
本论文工作的目的就是采用体全息存储器对图像库进行模式识别。
This thesis is aiming at pattern recognition with image bases stored in VHM.
体全息存储系统中光学系统的低通的特性导致了输出的页内串扰。
The low pass nature of the optical systems used for the volume holographic storage system results in the presence of intersymbol interference (ISI) at the output of the system.
在体全息相关识别系统中，如何改善相关峰质量是提高识别率的关键问题。
The key point about increasing recognition accuracy is to improve the correlation peaks quality in the volume holographic correlation recognition system.
介绍一种在体全息相关识别中实现旋转不变性和位移不变性的一种简便方法。
Based on the volume holographic storage, a novel and easy method is proposed to realize rotation and shift invariance in pattern recognition system.
利用局域体全息的耦合波理论，计算了该透镜衍射光的振幅分布和衍射效率。
On the basis of the coupled-wave theory of local volume holography, the amplitude distribution and the diffraction efficiency of the diffracted beams are calculated.
为了有效抑制噪声干扰，将数字通信模型引入到体全息视频存储方案设计中。
A holographic storage scheme for video data storage and retrieval based on the digital communication model is de-signed.
接着介绍了体全息存储的有关理论，简要地描述一般耦合波理论的有关理论结果；
Then the relevant volume holographic principles were briefly illustrated, followed by results of general coupled-wave theory which are useful for volume holographic storage.
分析了体全息存储的有关特点，对支持体全息存储的文件系统进行了研究和设计。
This paper analyzes VHS's characteristics, and researches the file system based on the VHS.
实验结果表明，半径较大的体全息透镜具有较好的深度分辨率，成像效果较为清晰。
The experimental results show that bigger size of the volume holographic lens can obtain better depth resolution, and thus the results of imaging are better.
基于耦合波理论并引入波矢簇的概念，对体全息存储分维复用的串扰噪声进行了分析。
Based on the coupled mode theory, the cross-talk noise in fractal multiplexed volume hologram is analyzed.
利用衍射理论计算体全息成像系统的点扩展函数，评价成像系统的纵度和深度分辨率特性。
The point spread function (PSF) of volume holographic imaging system is employed to analyze diffraction imaging characteristics and estimate depth resolution.
近年来，体全息存储技术以其存储容量大、数据传输率高和具有相关识别等特性被广泛研究。
Recently, volume holography technology is widely studied because of its high storage density, fast data transfer rate and the correlate character.
体全息光栅由球面信号光波和平面参考光波干涉记录，并以原信号光作为探测光波进行成像。
Volume holographic grating, used as a volume holographic imaging lens in the imaging system, is recorded via illuminating the recording medium with a spherical signal beam and a plane reference beam.
体全息存储器因其存储密度高、存储容量巨大、存取速度极快的独特优势，可望满足这种需求。
Owing to the advantages in high storage capacity, fast data transfer rate, and short access time, volume holographic memories (VHM) are considered to meet the needs.
控制系统方面：从硬件和软件两方面着手，设计并实现了一套全新的体全息数据存储控制系统。
For control system: we introduce a novel control system for volume holographic data storage from the aspects of both hardware structure and software realization.
生成最优基的特征图像，采用体全息相关识别系统实现虹膜的光学识别，实验取得较好的效果。
After joint best basis selection, eigen-images are generated and applied in a volume holographic correlation recognition system to implement optical iris recognition.
但是体全息存储记录通道中复杂的噪声来源一直是妨碍体全息存储技术实用化的主要问题之一。
However it is always one of main problems for volume holographic storage which is made practicality that there are a lot of the complex noise sources in the recording channel.
体全息光栅的读出偏离布拉格条件时，衍射光方向的确定是体光栅耦合波理论中的一个重要问题。
When a volume holographic grating is readout under off-Bragg condition, determining the direction of the diffracted beam is an important issue in the coupled-wave theory of volume gratings.
为了寻求更高质量和密集度的WD M器件，对体全息技术制作WD M器件的新方法进行了研究。
For getting superior quality and denser WDM device, a new method to make demultiplexing device with volume holographic technology is studied.
首先应用耦合波理论对体全息光栅的衍射效率以及角度选择性和波长选择性等衍射特性进行了分析。
First, the properties of volume holographic grating, such as diffraction efficiencies, Angle and wavelength selectivity, have been theoretically analyzed by using the couple-wave theory.
构建了基于体全息存储技术的光学图像识别系统，应用在以实时人脸识别为基础的电子门卫系统中。
An optical image recognition system based on the volume holographic storage technology is constructed. It is applied to an "electronic guard" system based on the real time human face recognition.
基于光折变晶体体全息存储和子波相关理论，本文提出并构建了一个新型的多通道体全息子波相关识别系统。
Based on the theories of volume holographic storage and wavelet transform, a novel multi channel correlation system is proposed and constructed.
本文考虑了体全息存储信道的非线性特点，提出了页内串扰的模型，并引入了盲均衡化的方法来降低页内串扰。
In this paper, we present an ISI model in which we consider the nonlinear nature of the channel and introduce blind equalization method to debase the ISI.
采用光强的互补编码，利用体全息关联特性，构造了一种内容寻址的、基于与非操作的光学全息真值表查询系统。
Adopting complementary-encoding of light intensity and volume holography, a content-addressable optical holography truth table look-up system based on the NAND operation is structured.
将体全息光栅视为许多平面全息光栅的集合，利用平面全息衍射理论导出体全息光栅衍射的耦合波方程，并得到其衍射效。
And, using the planar hologram diffraction theory, the coupled wave equations of the volumetric hologram grating diffraction have been derived and the diffraction efficiencies obtained.
以二维逻辑块地址为基础，对体全息数据存储文件系统空间分配的连续性进行了研究，提出了“顺序连续”和“随机连续”的概念。
By researching the continuity of file data-block allocation on two-dimensional logical block address, the concepts of "sequence continuity" and "stochastic continuity" were presented.
文中深入分析了引入子波变换对体全息相关器所产生的作用，给出了系统一次并行输出相关通道数目的估算方法及提高系统并行性能的主要途径。
The effects of wavelet transform are studied in detail. The amount of output correlation channels is estimated, and methods to improve parallelism of the system are provided.
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