搜索结果: 1-15 共查到“工学 Wavelength”相关记录226条 . 查询时间(0.078 秒)
CLASSIFICATION OF DUAL-WAVELENGTH AIRBORNE LASER SCANNING POINT CLOUD BASED ON THE RADIOMETRIC PROPERTIES OF THE OBJECTS
airborne laser scanning LiDAR multispectral laser scanning classification OPALS GNDVI
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2018/6/4
Airborne laser scanning (ALS) is a well-known and willingly used technology. One of the advantages of this technology is primarily its fast and accurate data registration. In recent years ALS is conti...
WAVELENGTH SELECTION OF HYPERSPECTRAL LIDAR BASED ON FEATURE WEIGHTING FOR ESTIMATION OF LEAF NITROGEN CONTENT IN RICE
Hyperspectral LiDAR Feather Weighting Leaf Nitrogen Content Wavelength Selection Partial Least Squares Support Vector Machine
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2016/7/4
Hyperspectral LiDAR (HSL) is a novel tool in the field of active remote sensing, which has been widely used in many domains because of its advantageous ability of spectrum-gained. Especially in the pr...
ON-LINE WAVELENGTH CALIBRATION OF PULSED LASER FOR CO2 DIFFERENTIAL ABSORPTION LIDAR
On-line wavelength calibration Pulsed laser Multi-wavelength scanning Energy matching
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2016/7/4
Differential absorption lidar (DIAL) remote sensing is a promising technology for atmospheric CO2 detection. However, stringent wavelength accuracy and stability are required in DIAL system. Accurate ...
A NEW METHOD TO ESTIMATE THE VISIBLE REFLECTANCE FROM SHORT WAVE INFRARED WAVELENGTH
Reflectance MODIS Aerosol Atmosphere correction AOD SWIR
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2015/12/28
This article mainly discussed how to estimate surface reflectance of the visible wavelength which are affected by the atmosphere from surface reflectance at 2.1μm which are almost transparent in commo...
Wavelength-dependent spatial variation in the reflectance of ‘homogeneous’ ground calibration targets
Spectral reflection characteristic of remote sensing data and the ground measurements
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2015/2/5
Remotely sensed data are most useful if calibrated to spectral reflectance of known features. One
simple method of calibration is regression of remote data on the reflectance of several ground
targe...
Wavelength-tunable QAM Synthesis by Direct Modulation of Injection-locked Fabry-Perot Semiconductor Lasers
Wavelength-tunable QAM Synthesis Direct Modulation Injection-locked Fabry-Perot Semiconductor Lasers
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2014/11/6
A new scheme for direct and tunable (30nm shown here) QAM synthesis from binary RF data streams is demonstrated with up to 48Gbit/s QPSK, including propagation over 75km SMF-28. Preliminary 16QAM (60G...
200 Gb/s and Dual-Wavelength 400 Gb/s Transmission over Transpacific Distance at 6 b/s/Hz Spectral Efficiency
200 Gb/s Dual-Wavelength 400 Gb/s Transmission over Transpacific Distance 6 b/s/Hz Spectral Efficiency
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2014/11/6
We transmit 106x200 Gb/s channels over 10,290 km at 6.0 b/s/Hz enabled by Nyquist spectral shaping and nonlinearity compensation. We also transmit 53x400 Gb/s channels over 9,200 km detecting two 200 ...
146λ××6××19-Gbaud Wavelength- and Mode-Division Multiplexed Transmission over 10××50-km Spans of FewMode Fiber with a Gain-Equalized Few-Mode EDFA
146λ××6××19-Gbaud Wavelength Mode-Division Multiplexed Transmission over 10××50-km Few Mode Fiber Gain-Equalized Few-Mode EDFA
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2014/11/6
We demonstrate wavelength- and mode-division multiplexed transmission over a fiber re-circulating loop comprising 50-km of low-DMGD few-mode fiber, and an optimized few-mode EDFA with a flat gain spec...
Sensitivity analysis and optimization of sub-wavelength optical gratings using adjoints
Sensitivity analysis sub-wavelength optical gratings
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2015/8/6
Numerical optimization of photonic devices is often limited by a large design space: the finite-differences gradient method requires as many electric field computations as there are design...
SIGNAL NOISE REDUCTION BASED ON WAVELET TRANSFORM IN TWO-WAVELENGTH LIDAR SYSTEM
LIDAR Data mining Proceedings Algorithms Estimation
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2014/4/29
Nowadays lidar has become a leading edge technology for photogrammetry and remote sensing. A new lidar with two detection wavelengths was presented in this paper. The two-wavelength lidar can obtain s...
Wavelength-Interleaving Bidirectional Transmission System Using Unidirectional Amplification in a 5x100 km Recirculating Loop
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2011/11/23
This investigation presents a novel 50-GHz interleaved bidirectional transmission system with eight wavelengths that uses four-port interleavers in a bidirectional recirculating loop. This bidirection...
Polarization-Insensitive, 40 Gb/s Wavelength and RZ-OOK-to-RZ-BPSK Modulation Format Conversion by XPM in a Highly Nonlinear PCF
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2011/11/18
Polarization-insensitive wavelength conversion, as well as the conversion of return-to-zero (RZ) ON-OFF keying (RZ-OOK) to RZ binary phase-shift keying (RZ-BPSK), has been simultaneously achieved at 4...
Dynamic of rescattering-electron wave packets in strong and short-wavelength laser fields: Roles of Coulomb potential and excited states
Dynamic of rescattering-electron wave packets strong and short-wavelength laser fields Roles Coulomb potential excited states
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2014/5/28
We investigate the high-order harmonic generation of atoms and molecules exposed in strong and shortwavelength (shorter than 800 nm) laser fields. Our simulations show that the electronic rescattering...
Design methodology for compact photonic-crystal-based wavelength division multiplexers
compact photonic-crystal-based wavelength division multiplexers
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2015/8/10
We present an extremely compact wavelength division multiplexer design, as well as a general framework for designing and optimizing frequency selective devices embedded in photonic crystals satisfying...
Wavelength Effect on Photocatalytic Reduction of CO2 by Ag/TiO2 Catalyst（图）
silver doping titania carbon dioxide reduction photocatalysis wavelength
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2013/10/13
Photocatalytic reduction of CO2 by water was performed in the presence of a Ag/TiO2 catalyst under illumination by lamps with different wavelengths (254, 365, and 400 nm). The yields of the main produ...