搜索结果: 1-15 共查到“光信息技术 Comparison”相关记录18条 . 查询时间(0.188 秒)
COMPARISON OF PHOTOCONSISTENCY MEASURES USED IN VOXEL COLORING
photoconsistency voxel coloring three-dimensional object modeling
2015/8/14
A framework for the comparison of photoconsistency measures used in voxel coloring algorithm is described. With this framework,
the results obtained in generalized voxel coloring algorithm using cert...
A comparison of multi-view 3D reconstruction of a rock wall using several cameras and a laser scanner
Close Range Photogrammetry Camera Comparison Accuracy Three-dimensional Modelling Engineering Application Geology
2014/6/30
This work presents a comparative study between multi-view 3D reconstruction using various digital cameras and a terrestrial laser scanner (TLS). Five different digital cameras were used in order to es...
A comparison of semiglobal and local dense matching algorithms for surface reconstruction
DSM Accuracy Matching Reconstruction Comparison Algorithms
2014/6/30
Encouraged by the growing interest in automatic 3D image-based reconstruction, the development and improvement of robust stereo matching techniques is one of the most investigated research topic of th...
Comparison between Analytical Solution and Experimental Setup of a Short Long Ytterbium Doped Fiber Laser
Ytterbium Doped Fiber ASE Rate Equation Runge-Kutta
2012/6/28
In this research, Amplified Spontaneous Emission (ASE) spectrum characteristics for a highly Yb3+ doped glass fiber with different pump powers and pump wavelengths are scrutinized. ASE spectral profil...
Comparison and analysis of codes for remodulation WDM-PON with adaptive code selection
Line codes Code efficiency WDM-PON Remodulation
2011/10/15
In a remodulation PON, the upstream signal quality can be improved when the downstream signal is coded. But low code efficiency may result in network congestion in downlink. Based on the downlink traf...
Comparison of OFDMA and SC-FDMA Channel Access Techniques in a Passive Optical Network Environment
Comparison OFDMA SC-FDMA Channel Access Techniques Passive Optical Network Environment
2011/5/25
For the first time, OFDMA and SC-FDMA are compared experimentally as candidate uplink access techniques for next-generation PONs. Important issues like peak-to-average power ratio, optical beat interf...
Comparison of Pulse Shapes in a 224Gbit/s (28Gbaud) PDM-QAM16 Long-Haul Transmission Experiment
Fiber optics communications Phase modulation
2011/5/20
We investigate the effectiveness of RZ50 versus NRZ in a 224Gbit/s PDM-QAM16 transmission. Record distances of 2000km and 1520km are reported for single- and 3-channel transmission over SMF links with...
Comparison of Two CS-SSB Modulators Used in Bidirectional Carrier Distributed Long-Reach Passive Optical Network
Two CS-SSB Modulators Carrier Distributed Reach Passive Optical Network
2011/5/18
Two different CS-SSB modulators based on Mach-Zehnder structure used in carrier-distributed long-reach passive optical networks are investigated and compared. The Rayleigh-backscattering beat noise to...
Comparison of RZ and NRZ Formats in 112-Gb/s PDM- QPSK Long Haul Coherent Transmission Systems
Coherent Transmission Systems PDM- QPSK RZ\NRZ Formats
2011/5/15
We show that 112-Gb/s PDM-QPSK coherent transmission systems with RZ pulse shape have better tolerance to ROADM filtering than NRZ, and time-interleaved RZ-PDM-QPSK outperform NRZ-PDM-QPSK in nonlinea...
Performance Comparison of 112 Gb/s PM-QPSK Transmission with NZ-DSF Dispersion Compensation Configurations for Lower Bit Rates
Dispersion Compensation Lower Bit Rates Performance Comparison
2011/5/14
We investigate transmission performance for 112 Gb/s PM-QPSK DWDM systems over NZ-DSF with configurations enabled by NZ-DSF dispersion characteristics. We find flexibility in dispersion compensation f...
Performance Comparison of MLSE-Based Receivers in a 1000 km Transmission Link under Fast SOP Variations
Fiber optics links subsystems Polarization
2010/6/10
This paper aims at comparing the tolerance to fast SOP variations of two MLSE-based receivers. Descriptions of the emulation device and measurement method are given. The results show that the receiver...
Fractional Survivable Network Bandwidth:A Comparison of IP over WDM Schemes
Network Survivability Network Protection Restoration
2010/6/10
IP over WDM network schemes are considered that protect a fraction b of the network bandwidth. If b is large then failure detection and fractional bandwidth protection at the optical layer lowers band...
Optimization and Comparison of the Transmission Performance of RSOA/SOA Intensity-Modulated Optical OFDM Signals for WDM-PONs
Fiber optics communications Modulation Semiconductor optical amplifiers
2010/6/4
For optical OFDM IMDD systems, optimum operating conditions of RSOA/SOA intensity modulators are identified, under which similar performances are obtained for different modulators. Under low-cost comp...
Comparison of Static and Dynamic WDM Networks in Terms of Energy Consumption
Fiber optics communications Networks
2010/6/4
The benefit of migrating from static to dynamic WDM networks is evaluated, for the first time, in terms of energy consumption. Results show a clear benefit of dynamic operation for traffic loads < 0.5...
For next generation PONs, the main effort is currently on increasing the line rate with 10GPON while WDM-PON is increasingly being discussed. These approaches are compared based on performance, cost a...