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- Based on the complicated noise characteristics in digital holographic storage system(DHSS), some methods of channel code in digital communication are introduced. 针对数字体全息存储系统(DHSS)中复杂噪声的特点,从数字通信中信道编码的观点出发,讨论了采用数字信号处理方法来抑制DHSS中噪声干扰的技术。
- To effectively reduce the influence of noise in the digital holographic storage system,a novel code having modi-fied coding structure,Modulation-Array(MA)code,is proposed. 体全息存储系统的噪声特点决定了必然要引入纠错编码和调制编码技术。
- Design and Implementation of Modulation-Array Code Used in Digital Holographic Storage 用于体全息存储系统的调制-阵列码的设计与实现
- Study and Development of Modulation Code Technique in Digital Holographic Storage 体全息存储系统中新调制编码技术的研究进展
- Keywords holography;photopolymer;transmittance;diffraction efficiency;Bragg-mismatch;digital holographic storage; 全息;光致聚合物;透过率;衍射效率;布喇格偏移;数字全息存储;
- Digital holographic storage 数字全息存储
- The holographic storage is one of the most promising optical storage technologies for high-density dada storage. 体全息存储是一种适合高密度数据存储的光学存储技术,它同时具有存储密度高、数据传输率高、数据搜索时间短等优势。
- This paper describes a novel method of processing complex phasors in digital holographic interferometry(DHI). 描写了一种新颖的在复数域处理数字全息干涉的方法。
- The experimental results show that the fulgide can be used as a good rewritable holographic storage material. 结果表明,俘精酸酐可以作为一种性能优良的可擦写全息光存储材料。
- The interference among the same kind inclusions has been studied with the help of the digital holographic interferometry system. 摘要利用自主开发的数字全息干涉测量系统针对同类型夹杂物间的干涉效应开展研究。
- The results show that the overall properties of the In: Ce : Mn : LN crystal make it a better holographic storage material than the Ce : Mn: LN crystal. 结果表明:In:Ce:Mn:LN晶体是比Ce:Mn:LN晶体综合性能更好的全息存储材料。
- Only one digital hologram is needed to reconstruct hologram of tiny object.It is possible to realize real-time reconstruction images in digital holographic microscopy. 这种方法只需一幅数字全息图就可得到微小物体的再现像,它使数字全息显微实现实时再现成为可能。
- It has been found that,in terms of holographic storage properties is best when the optimal doping concentration of Sc is 2mol% among this crystal series. 实验表明:在一系列Sc:Fe:LiNbO3晶体中,Sc(2mol%25):Fe:LiNbO3晶体能获得最佳的光折变灵敏度和动态范围。
- Unlike DVDs, which store data in thin layers just beneath the surface of the disc, holographic storage encodes information in three dimensions, within the volume of the disc. 不像DVD盘那样把数据存储到磁盘表面下的薄层中,全息存储技术在磁盘容量内以三纬形式对信息进行编码。
- In this paper, the phase distortion has been discussed, by using different reconstruction beam to reconstruct digital holographic image of 3D object in lensless Fourier holography. 本文研究了离轴无透镜傅里叶变换数字全息中,用非原参考光再现三维物体而引入的相位畸变问题,通过详细的理论分析,得出相应的相位畸变表达式。
- A Sample Test on the Tilt Angle of Object Light Illumination in the Digital Holographic 3D Surface Shape Detection[A]Proceedings of Holography and Diffractive Optics III[C], 2007 . 姜忠海;辛丽;方光宇;王玉晓;张学如;宋瑛林.;飞秒光纤激光自相关谱畸变产生机理的研究[A]2007年先进激光技术发展与应用研讨会论文集[C];2007
- Based on the theory of wavelet correlation and the associative characteristic of volume holographic storage in a photorefractive crystal, a novel multichannel wavelet correlator is constructed. 基于子波匹配相关理论和光折变晶体的体全息关联存储特性,采用球面波作参考光,构建了一个新型的多通道体全息子波相关器。
- A new digital watermark technique based on digital holography and discrete cosine transform (DCT) is presented.The digital holographic watermark is embedded into an original image. 提出了一种以数字全息和离散余弦变换为基础的数字水印技术,实现了在原始图像中嵌入数字全息水印。
- In digital holographic interferometry, we can accurately measure the slight deformation of the object by calculating the change of the phase information recorded by digital holograms. 干涉测量中,主要通过计算数字全息图中记录下的物体相位信息的变化对物体状态的微小变化进行精确测量。
- Pattern recognition for volume holographic image-base built by both angular multiplexing technology and block-oriented holographic storage technology were implemented by using CC method. 使用相关系数分别对采用角度复用技术和分块全息存储技术建立起来的体全息图像库完成了识别工作。