云南高校图书馆联盟文献共享服务平台- ITERATIVE

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Design of a freeform,dual fields-of-view,dual focal lengths,off-axis three-mirror imaging system with a point-by-point construction-iteration process被引量：2: 《Chinese Optics Letters》2016年第10期34-38,共5页杨通朱钧金国藩; In this Letter, we propose a novel configuration and design method of freeform, dual fields-of-view （FOVs）, dual focal lengths, off-axis three-mirror zoom imaging systems. The switch of the two zooms is achieved by ...; 关键词：DESIGN Imaging systems Iterative methods Mirrors Specifications

Novel iteration-free blind phase noise estimation for coherent optical OFDM被引量：3: 《Chinese Optics Letters》2014年第12期19-23,共5页任宏亮蔡嘉兴卢瑾温浩薛林林覃亚丽郭淑琴周守利胡卫生; supported in part by the China Postdoctoral Science Foundation(No.2013M540361);the National Natural Science Foundation of China(Nos.60907032 and 61275124);the Natural Science Foundation of Zhejiang Province(No.LY13F010011);the Zhejiang Youth Science Fund(No.LQ13F050005); We propose a novel iteration-free blind phase noise estimation scheme for coherent optical orthogonal frequency division multiplexing （CO-OFDM） systems. In the new algorithm, the cost function is selected as the sim...; 关键词：Amplitude modulation Computational complexity Cosine transforms Cost functions COSTS Error compensation Frequency division multiplexing Frequency estimation Iterative methods Modulation Optical fiber communication Orthogonal frequency division multiplexing Quadrature amplitude modulation

Shaping of focal field with controllable amplitude, phase, and polarization被引量：1: 《Chinese Optics Letters》2014年第9期1-5,共5页郝晶晶于忠良陈召忠陈浩丁剑平; supported by the National Natural Science Foundation of China under Grant Nos.11074116 and 11274158; We propose a method for configuring the distribution of amplitude, phase, and polarization in the focal region of vector beams. The polarization and phase of incident beam is spatially tailored so that it can produce ...; 关键词：Iterative methods POLARIZATION

Phase retrieval from double axially displaced holograms for dual-wavelength in-line holography被引量：1: 《Chinese Optics Letters》2014年第2期30-33,共4页李艳肖文潘锋戎路; supported by the National Natural Science Foundation of China(Nos.31000387,61177006,and 61307010);China Postdoctoral Research Foundation(No.2013M540828);Beijing Postdoctoral Research Foundation(No.2013ZZ-17); A phase retrieval method for dual-wavelength in-line digital holography is presented with double axially displaced holograms.A synthetic wavelength is used during iterative propagations to retrieve wrap-free phase dis...; 关键词：Computer generated holography Iterative methods Phase shifters

Computational imaging technology for high-sensitivity space-image acquisition: 《Chinese Optics Letters》2013年第11期46-49,共4页孙瑾秋李海森张海超张艳宁汶德胜; supported by the National Natural Science Foundation Key Project(No.61231016);theNational Natural Science Foundation of China Youth Science Fund Project(No.61301193); Acquiring deep-space images with high spatial resolution and sensitivity is important for space-debris surveillance and early warning. We propose a novel computational imaging （CI） method for high-sensitivity image ...; 关键词：HARDWARE Image acquisition Iterative methods

High-contrast imaging for weakly diffracting specimens in coherent diffraction imaging被引量：3: 《Chinese Optics Letters》2013年第2期39-41,共3页潘兴臣 Suhas P. Veetil 刘诚林强朱健强; supported by the One Hundred Person Project of Chinese Academy of Sciences under Grant No.1104331-JR0; Coherent diffraction imaging （CDI） and ptychography techniques bypass the difficulty of having high- quality optics in X-ray microscopy by using a numerical reconstruction of the image that is obtained by inverting ...; 关键词：Diffraction patterns Edge detection Image retrieval Imaging techniques Interferometry Iterative methods

Effect of the reflection of underlying surface on sky radiance distribution被引量：1: 《Chinese Optics Letters》2007年第3期125-127,共3页杨春平魏凌吴健冷杰; This work was supported by the National Natural Science Foundation of China under Grant No. 10376007.; Sky radiance might be influenced by the multiple reflectance between the earth＇s albedo surface and the atmosphere. Based on the Lambert＇s law and the radiative transfer equation （RTE）, a model is developed to cal...; 关键词：Atmospheric optics Iterative methods Light reflection Mathematical models

Analytical formulas for calculating the blocking probability of a dynamic star network: 《Chinese Optics Letters》2005年第10期579-581,共3页陈佳佳吕翔何赛灵; For a dynamic routing and wavelength assignment （RWA） a star topology is shown to be more efficient in comparison with a ring topology. Analytical formulas for a dynamic RWA in a star network are presented and verif...; 关键词：Computer simulation DYNAMICS Iterative methods Networks (circuits) PROBABILITY TOPOLOGY Wavelength division multiplexing

Implementation of efficient image reconstruction for CT: 《Chinese Optics Letters》2005年第7期389-391,共3页刘杰王光飞; The operational procedures for efficiently reconstructing the two-dimensional image of a body by the filtered back projection are described in this paper. The projections are interpolated for four times of original pr...; 关键词：Computerized tomography Fast Fourier transforms INTERPOLATION Iterative methods Two dimensional

Elevation data compression using IFS-based three-dimensional fractal interpolation: 《Chinese Optics Letters》2004年第10期582-585,共4页吴思源周源华; This paper presents the application of iterated function system (IFS) based three-dimensional (3D) fractal interpolation to elevation data compression. The parameters of contractive transformations are simplified by a...; 关键词：ALGORITHMS Fractals INTERPOLATION Iterative methods Three dimensional

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