搜索结果: 1-15 共查到“光学仪器及技术 Spectral”相关记录27条 . 查询时间(0.118 秒)
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：The spectral collocation method for the nonlocal problem with weak singularity
弱奇点 非局部问题 光谱搭配
2023/5/6
介绍求解一维弱奇异非局部扩散问题的谱配位法，建立了相应的Gauss-Jacobi 积分公式，并将其推广至高维非局部问题的谱配置点法，相关的理论与实验检验了算法的精度和渐进相容性。
浙江大学光电科学与工程学院郝翔课题组论文《Spectral Imaging with Deep Learning》发表于《Light：Science & Applications》封面（图）
光谱成像 光学滤光片 光谱编码
2023/3/10
2022年6月17日，浙江大学光电科学与工程学院郝翔课题组综述文章《Spectral imaging with deep learning》发表于《Light:Science&Applications》杂志第六期封面。该研究回顾了光谱成像技术应用深度学习的最新进展，对基于深度学习的光谱成像技术进行了梳理。研究对深度学习光谱成像的各种技术路线进行了原理阐述、研究总结，并整理了当前的光谱成像数据集、概...
PURIFICATION OF TRAINING SAMPLES BASED ON SPECTRAL FEATURE AND SUPERPIXEL SEGMENTATION
Beijing-2 Satellite imagery Training Samples Purification Spectral Feature Superpixel Segmentation
2018/5/14
Remote sensing image classification is an effective way to extract information from large volumes of high-spatial resolution remote sensing images. Generally, supervised image classification relies on...
AUTOMATIC REGISTRATION OF GF4 PMS: A HIGH RESOLUTION MULTI-SPECTRAL SENSOR ON BOARD A SATELLITE ON GEOSTATIONARY ORBIT
GF4 PMS Automatic Image Registration Optimal Base Band RPC Correction Spatial Resolution
2018/5/14
Geometric correction is an important preprocessing process in the application of GF4 PMS image. The method of geometric correction that is based on the manual selection of geometric control points is ...
Multi-spectral data acquisition and processing techniques for damage detection on building surfaces
Cultural Heritage Multispectral Terrestrial Laser Scanning Classification Acquisition Detection Recording
2015/8/25
This paper describes the development and investigation of a multi-spectral laser scanner for non destructive diagnosis of damages on building surfaces. The application of four semiconductor lasers as ...
Spectral light separator based on deep-subwavelength resonant apertures in a metallic film
Spectral light separator deep-subwavelength resonant apertures metallic film
2015/8/6
We propose to funnel, select, and collect light spectrally by exploiting the unique properties of deep-subwavelength resonant apertures in a metallic film. In our approach, each aperture has an ...
PDL and PMD Emulation with Control of Amplitude and Spectral Dependence to a Sub-Channel Level across the C-Band
Optical instruments Optical communications
2015/5/25
We present results of a polarization diverse LCoS wavelength processor. Applications include impairment simulation of broadband, channelized and intra-band PMD and PDL for detailed experimental sensit...
Parametric Channelized Receiver for Single-Step Spectral Analysis
Parametric Channelized Receiver Single-Step Spectral Analysis
2015/5/21
We present new parametric channelized receiver for instantaneous RF spectrum characterization. Single resonant cavity filter combined with parametric wavelength multicasting achieved simultaneous chan...
Characterization of Short PM Raman Fiber Lasers with a Small Spectral Bandwidth
Characterization Short PM Raman Fiber Lasers Small Spectral Bandwidth
2015/5/20
Linearly polarized Raman fiber lasers using 3 m and 6 m of a novel fiber are discussed. Experimental and theoretical results for output powers at watt levels and spectral widths in the 0.1 nm range ar...
Coherent 40 Gb/s Transmission with High Spectral Efficiency Over Transpacific Distance
Coherent 40 Gb/s Transmission High Spectral Efficiency
2015/5/20
We experimentally study the reach of coherent 40 Gb/s PDM RZ QPSK transmission at several spectral efficiencies. Transpacific transmission distance at 3.2 bits/s/Hz and record SE-distance product at 2...
Dynamic Model of Spectral Hole Burning for EDFAs with 980-nm-Pumping
Dynamic Model Spectral Hole Burning EDFA 980-nm-Pumping
2015/5/20
Spectral hole burning (SHB) in the gain spectrum of EDFAs influences the dynamic response of EDFAs and their electronic control. A 3-level-model incorporating SHB has been derived and numerically inve...
Precise Spectral and Impulse Response Characterization of Broadband Super Structured FBGs by Multi-Scan OSSB
Precise Spectral Impulse Response Characterization FBGs Multi-Scan OSSB
2015/5/15
We demonstrate a broadband optical single side band (OSSB) measurement by merging multiple RF scans. We provide a chip by chip optical phase measurements on a Super Structured FBG designed for Coheren...
Spectral Target-Detecting System Using Sine-Wave Modulation
Sine-wave modulation Analog Target detection Optical spectrum
2012/4/18
Target detection is one of the key technology of precision chemical application. Previously the digital coding modulation technique was commonly used to emit and receive the optical signal in the targ...
Spectral Reflectance Characteristics of Different Snow and Snow-Covered Land Surface Objects and Mixed Spectrum Fitting
Snow Snow-covered land surface object Spectral characteristics Spectral fitting
2012/4/17
The field spectroradiometer was used to measure spectra of different snow and snow-covered land surface objects in Beijing area. The result showed that for a pure snow spectrum, the snow reflectance p...
Reducing spectral attenuation in solid-core photonic crystal fibers
Fiber optics optical communications Microstructured fibers
2015/6/10
We describe the effects of fabrication process timing and preform exposure to atmospheric air on spectral attenuation in photonic crystal fibers. The lowest attenuation is achieved by rapid processing...