搜索结果: 1-14 共查到“光电子技术 Resolution”相关记录14条 . 查询时间(0.374 秒)
COMBINING HIGH SPATIAL RESOLUTION OPTICAL AND LIDAR DATA FOR OBJECT-BASED IMAGE CLASSIFICATION
High Spatial Resolution Lidar Object-Based Classification Aerial Image Image segmentation
2018/5/14
In order to classify high spatial resolution images more accurately, in this research, a hierarchical rule-based object-based classification framework was developed based on a high-resolution image wi...
comparison of dem generation and combination methods using high resolution optical stereo imagery and interferometric sar data
DEM/DTM High resolution Combination Fusion Accuracy Multisensor Optical SAR
2015/9/1
Digital elevation models (DEM) from satellite data are generated mainly from two types of datasets using completely different methods: photogrammetry for optical stereo images (e.g. SPOT5, IKONOS) and...
Slow-Light Fiber-Bragg-Grating Strain Sensor With a 280- Resolution
Fiber Bragg gratings fi ber optics sensors
2015/8/7
We report a fiber strain sensor based on a single fiber Bragg grating (FBG) with a minimum detectable strain of 280 in the 20-kHz range. This breakthrough was made possible by operating th...
RESEARCH ON THE THREE ANGULAR RESOLUTION OF TERRESTRIAL LASER SCANNING
Terrestrial Laser Scanning Angular Resolution AMTF Model, EIFOV Model Beamwidth Sampling Interval
2014/4/28
Terrestrial laser scanning technology has been applied more and more widely in the field of Surveying and mapping. Although requirements of the accuracy for different laser scanner survey may differ c...
Synchronous Trigger Detection for Pulse Laser Readout on Super Resolution Erasable Optical Disks
pulse readout synchronous detection erasable optical disks thermal super resolution disks magneto-optical super resolution center aperture detection disk
2011/11/30
The laser pulse readout scheme is advantageous in reading thermal super resolution disks, but the light modulation on the RF signal confuses the detection channel. A synchronous trigger detection sche...
Fourier-Transform, Integrated-Optic Spatial-Heterodyne Spectrometer with 1 GHz Resolution on a Silica-Based Planar Waveguide
Waveguides planar Spectroscopy Fourier transforms Integrated optics devices
2015/5/26
We present fabrication details and measurements of a high-resolution planar-waveguide spatial heterodyne spectrometer incorporating 64 asymmetric Mach-Zehnder interferometers.Measurements verify 1 GHz...
Time-Stretch Analog-to-Digital Conversion Using Phase Modulation and Broadband Balanced Coherent Detection for Improving Resolution
Fiber optics links subsystems Radio frequency photonics
2015/5/22
We introduce a novel implementation of time-stretch analog-to-digital conversion which uses phase modulation and balanced coherent detection for improving resolution. Proof of concept experiment demon...
Characterization of strongly spun fibers with spin rate exceeding OFDR spatial resolution
spun fibers spin rate xceeding OFDR spatial resolution
2015/5/18
We describe an OFDR-based procedure to measure the spin of optical fibers with spin rates exceeding OFDR resolution. Fibers are twisted to locally unwind the spin and measurements are afterward reasse...
A Programmable Optical Filter Unit Cell Element for High Resolution RF Signal Processing in Silicon Photonics
Radio frequency photonics Analog Optical Signal Processing Integrated Optics
2015/6/10
We demonstrate the first reconfigurable, cascadable silicon photonics unit cell fabricated in commercial wafer-scale processes using a single 500ps delay line and allowing independent FIR and IIR resp...
Resolution-enhanced ultrafast ADC using optical multi-period transfer functions of NOLMs
Ultrafast processes in fibers Fiber optics sensors
2015/6/9
We propose a resolution enhancement scheme using optical input/output multi-period transfer functions of NOLMs for ultrafast low-resolution ADCs. This scheme can provide a resolution of 8.8 ENOB by co...
All-Optical Contention Resolution using a single optical flip- flop and two stage all-optical wavelength conversion
Optical switching devices Switching packet
2015/6/8
We present a new sheme for 40 Gb/s all-optical contention resolution based on cascaded wavelength converters and a hybrid integrated optical flip-flop. Using simultaneously both ports of the flip-flop...
160 Gb/s All-Optical Contention Resolution with Prioritization using Integrated Photonic Components
All-Optical Contention Resolution Prioritization Integrated Photonic Components
2015/7/16
We present for the first time 160Gb/s all-optical contention resolution with prioritization using integrated photonic devices. Error-free operation verifies that complex photonic systems are possible ...
High-resolution Refractive Index Sensing using Solid-core Photonic Crystal Fibers with High Index Infiltrations
High-resolution Refractive Index Sensing Solid-core Photonic Crystal Fibers
2015/8/4
We report the experimental demonstration of a refractive index sensor using scalable bandgap shift in two different structures of solid-core photonic crystal fibers. Resolution ~10 -7 refractive index...
Fiber-Optic Brillouin Distributed Discrimination of Strain and Temperature with 11-cm Spatial Resolution Using Correlation-Based Continuous-Wave Technique
Fiber-Optic Brillouin Distributed Discrimination Temperature Spatial Resolution Continuous-Wave Technique
2015/8/3
11-cm spatial-resolution distributed discrimination of strain and temperature is realized by measuring the Brillouin frequency shift and the birefringence from monitoring the dynamic grating spectrum ...