搜索结果: 1-15 共查到“光学工程 Evaluation”相关记录29条 . 查询时间(0.171 秒)
MULTIGRID CELL SHAPE EVALUATION IN DTM FILTERING OF MOBILE LIDAR POINT CLOUDS
Point cloud Mobile LiDAR Digital terrain models Filtering Delaunay triangulation
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2018/11/9
The georeferenced information acquisition for large scales digital terrain models generation is usually a rather time-consuming and costly process. The use of point clouds gathered by mobile LiDAR sys...
ON A FUNDAMENTAL EVALUATION OF A UAV EQUIPPED WITH A MULTICHANNEL LASER SCANNER
UAV Multichannel laser scanner Accuracy evaluation Laser-acquired point cloud Photogrammetry
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2018/6/4
Unmanned aerial vehicles (UAVs), which have been widely used in various fields such as archaeology, agriculture, mining, and construction, can acquire high-resolution images at the millimetre scale. I...
Evaluation of image based integrated measurement system and its application to topographic survey
Photogrammetry Calibration Digital Camera Laser Integration Non-contact
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2015/8/25
A convenient 3D measurement using amateur digital camera is enormously expected in various fields with appearance of the low cost and high-resolution amateur digital cameras. In these circumstances, t...
3D painting documentation: evaluation of conservation conditions with 3D imaging and ranging techniques
Cultural Heritage Photogrammetry Structured light sensor Monitoring, Comparison
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2014/7/30
The monitoring of paintings, both on canvas and wooden support, is a crucial issue for the preservation and conservation of this kind of artworks. Many environmental factors (e.g. humidity, temperatur...
FROM DSM TO 3D BUILDING MODELS: A QUANTITATIVE EVALUATION
3D buildings DSM Quantitative analyses Geometry City Model LoD
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2014/4/24
The paper reviews the state-of-the-art in 3D city models and building block generation, with a description of the most common solutions and approaches. Then the digital reconstruction and comparison o...
EVALUATION OF AN INTEGRATED GIS-BASED CRIME ANALYSIS & 3D MODELLING FOR IZMIR-KONAK MUNICIPALITY
GIS Environment Decision Support Design Modelling Analysis
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2014/5/9
GIS integrated 3D modelling is crucial for the city planning and design processes because urban modelling is a tool used in virtual environments, and provides convenience to work. Although, the creati...
Evaluation of a Fiber-Optic Parametric Amplifier with Optical Feedback in Multi-Channel Dynamic Networks
Networks Parametric oscillators amplifiers
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2015/5/26
We investigate the feasibility of optical gain-clamping a fiber-optic parametric-amplifier to prevent cross gain saturation in multi-channel systems. We measure only moderate improvement but identify ...
Evaluation of a Fiber-Optic Parametric Amplifier with Optical Feedback in Multi-Channel Dynamic Networks
Networks Parametric oscillators amplifiers
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2015/5/26
We investigate the feasibility of optical gain-clamping a fiber-optic parametric-amplifier to prevent cross gain saturation in multi-channel systems. We measure only moderate improvement but identify ...
Performance evaluation and improvement methods for low-driving voltage transmitters in long reach PONs
Fiber Optics Communications Networks network optimization
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2015/5/26
The performance of two common low-driving voltage (low-ER) sources is experimentally evaluated for long reach PON applications, considering also partial optical dispersion compensation and electronic ...
Experimental Evaluation of Centralized Failure Restoration in a Dynamic Impairment-Aware All-Optical Network
Centralized Failure Restoration Dynamic Impairment-Aware All-Optical Network
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2015/5/20
A centralized impairment-aware lightpath restoration scheme is experimentally demonstrated. Through the implementation of the QoT estimator module on FPGA technology,restoration times of 1.36s are ach...
Real-Time Evaluation of Optical Nonlinear Effects on 112Gbps PM-QPSK Signal in Dispersion Managed Links
Optical Communications Coherent Communications
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2015/5/20
We demonstrate the impact of nonlinear effects on dispersion managed links with a FPGA-based 112Gbps real-time receiver. We clarify that PM-RZ-QPSK provides superior robustness, whereas PM-NRZ-QPSK of...
Evaluation of Potential Optical Amplifier Concepts for Coherent Mode Multiplexing
Evaluation Potential Optical Amplifier Concepts
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2015/5/20
Fiber capacity increase by coherent mode multiplexing requires inline optical amplification for cost and energy efficiency. Erbium doped and distributed Raman fiber amplifier concepts are evaluated co...
Specialty Fiber Evaluation for In-building Distribution of Multiple-Format OFDM Radio Signals
OFDM Radio Signal building Distribution Specialty Fiber
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2015/5/15
Optical fiber options for deployment within the home environment were investigated for distribution of triple-play services. Corning ClearCurve® ZBL single-mode bend-insensitive optical fiber per...
Design and Performance Evaluation of Wavelength-Constrained Optical Time-Slotted Networks
Networks network optimization wavelength assignment
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2015/6/9
We propose to design a wavelength-constrained Time-Wavelength-Interleaved Network(TWIN) that uses a non-reconfigurable core, and compare its performance to that of a Time-Wavelength-Switched Network (...
Performance Evaluation of a Novel Service Provisioning Mechanism for Future Optical Internet Infrastructure
Networks Optical Communications
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2015/6/9
A detailed performance and trade-off analysis of a novel optical service plane architecture which is either integrated with the Infrastructure Provider entity or exists as a separate entity is present...