Aperture相关论文
运用Collins衍射积分推导了贝塞尔－高斯光束经圆光阑限孔透镜后的轴上光强表达式。通过数值计算讨论了轴上光强的分布规律。对贝塞......
本文分析了激光的横模结构以及在小孔耦合输出情况下的损耗特征,提出了确定激光谐振腔最佳耦合孔径的简便方法,实验证明效果良好。......
基于广义惠更斯-菲涅耳衍射积分公式, 以LohmannⅠ型光学系统为例, 推导出Bessel光束通过含光阑的球差分数傅里叶变换系统后的场分......
通过对高斯光束经光阑衍射后轴上点光强分布规律的分析,详细讨论了复费涅耳数的物理意义及其应用,指出采用位相片,可将远场轴上光......
CMOS图像传感器常采用像元在奈奎斯特频率处的调制传递函数(MTF)值对成像质量进行评价。MTF主要由孔径MTF和扩散MTF的频域乘积得到......
柱坐标下的径向偏振矢量光束在被高数值孔径透镜聚焦时，在紧聚焦条件下相比线偏振和圆偏振光束通过透镜后能获得较小的聚焦斑。在聚......
<div style=“text-align:justify;”> The large aperture mirror surface test is the basis of optical processing and alignm......
Aperture synthesis is an important approach to improve the lateral resolution of digital holography(DH) techniques. The ......
New slant range model and azimuth perturbation resampling based high-squint maneuvering platform SAR
Strong spatial variance of the imaging parameters and serious geometric distortion of the image are induced by the accel......
A fast,edge-preserving,distance-regularized model with bilateral filtering for oil spill segmentatio
Marine oil spills are among the most significant sources of marine pollution.Synthetic aperture radar(SAR)has been used ......
One-dimensional synthetic aperture microwave radiometers have higher spatial resolution and record measurements at multi......
Liquid lens is a new type of opt electric device.Compared with the traditional solid lens,the liquid lens has many a......
<正> Behaviours of the plasma sheath in low pressure gas discharge have been an interesting and active physical topic. A......
A new sub-wavelength metallic film lens configuration is proposed, which is embedded in a thin ideal metal film, and its......
By means of advantages of both SAR and lidar, the combination of the techniques of (inverse) synthetic aperture and lida......
We address problems in the development of large-scale flotation columns that use short cylinders. As a starting point, w......
A distributed localization in wireless sensor networks utilizing AOD estimation and synthetical unif
The localization of wireless sensor nodes is one of the key technologies in wireless sensor networks(WSN). Recently, a d......
针对被动毫米波技术探测高速运动目标能力不足的问题,采用MMIC直接检波式毫米波辐射计,构建了被动毫米波探测系统,通过试验获得了......
Nonlinear model characterizing stress-strain relationship and permeability change of contact compres
Understanding the stress-strain relationship and permeability change for contact compression fracture at closing stage h......
Hydrothermal synthesis,structure,fluorescence property of a novel 3D metal-organic framework with hi
A novel 3D metal-organic framework(MOF) with remarkable thermal stability,Ni(BIC)2.2·5H2O(JUC-86)(HBIC = 1-H-benzimidaz......
Preparation,Structure,and Properties of Polyurethane Foams Modified by Nanoscale Titanium Dioxide wi
TiO2-based nanosheets (TiNSs), TiO2-based nanotubes (TiNTs) were prepared by hydrothermal processing, and polyurethane f......
Potassium dihydrogen phosphate(KDP) single crystals are the only nonlinear crystals currently used for electro-optic swi......
In this paper, the Raman gain coefficients of ammonium dihydrogen phosphate(ADP) and potassium dihydrogen phosphate(KDP)......
We report on the amplification of high-average-power and high-efficiency picosecond pulses in a self-made verylarge-mode......
A new algorithm for retrieving wind vector using dual polarization imagery of advanced synthetic aperture radar (ASAR) i......
Two wind algorithms of ENVISAT advanced synthetic aperture radar (ASAR), i. e. CMOD4 model from the European Space Agenc......
The micro-channels usually refers to structural channels of minerals with aperture in the range of 0.3 nm to 2.0 run. Su......
A theoretic model of myocardial revascularization by a far infrared laser has been established and a quantificational re......
In this paper, the interaction curves of acoustic and optical waves in a non-collinear AOTF (acousto-optic tunable filte......
This paper proposes a new algorithm for joint frequency, two-dimensional (2-D) directions-of-arrival (DOA), and polariza......
The curvature factor of the parallel-track bistatic SAR is range dependent, even without variation of the effective velo......
By means of advantages of both SAR and lidar, the combination of the techniques of (inverse) synthetic aperture and lida......
To deal with the non-Gaussian noise in standard 2-D SAR images,the deramped signal in imaging plane,and the possible sym......
Directional Filter for SAR Images Based on Nonsubsampled Contourlet Transform and Immune Clonal Sele
A directional filter algorithm for intensity synthetic aperture radar (SAR) image based on nonsubsampled contourlet tran......
This paper establishes the classic linear model of signal of the MIMO radar system with distributed apertures. Based on ......
A mobile molecular Doppler wind lidar at an eye-safe wavelength of 355 nm based on double-edge technique is being built ......
Characteristics of Laser-Induced Surface and Bulk Damage of Large-Aperture Deuterated Potassium Dihy
Deuterated potassium dihydrogen phosphate damage performance at 351 nm is studied on a large-aperture laser system.Bulk ......
Synthetic aperture radar tomography sampling criteria and three-dimensional range migration algorith
Based on the general geometric model of multi-baseline Synthetic Aperture Radar Tomography (To-moSAR), the three-dimensi......
计算了InGaAsPSBH激光器的TE0 0 模 ,并利用非傍轴矢量矩理论 ,分析了平行于 p -n结方向上的光学质量因子M 2y 在以往有关M 2 的计......
报道了 MOCVD生长的高性能 85 0 nm氧化限制型垂直腔面发射激光器 .研制出的氧化直径为 9μm的激光器2 5℃时的斜效率和阈值电流分......
《美国地球物理联合会汇刊》1976年2月号57卷2期68—69页刊载了龙尼茨(C.Lomnitz)和吉尔(J.Gil)的题为《墨西哥新的地震台阵》一文......
This paper presents a formal approach, FSPD (Formal Specifications for Protocols of Decoders), to specify decoder commun......
The western Talimu Basin is an area of well-developed marine Cretaceusand Tertiary yielding fairly good fossil Foramini......
The ultimate objective of the inertial confinement fusion (ICF) research isto achieve the realization of controllable nu......
请下载后查看，本文暂不支持在线获取查看简介。Analytical form of EM fields radiated by circular aperture antennas of variou......
To improve the density of information storage,this paper introduces a kind of annular binary filters with super-resoluti......
An all-fiber based Er~ 3+ ∶Yb~ 3+ co-doped double clad fiber laser operating at 1550nm is demonstrated. By using 9......
An optical fiber bundle array coupling module with high output power is presented in this paper. The device integrated t......
A radiant source with a large aperture at 5-95℃ in the wavelength bands of 8-12 μm for calibrating infrared imaging sy......
