搜索结果: 1-15 共查到“知识库 工学 return”相关记录22条 . 查询时间(0.029 秒)
FROM SURVEY TO MODEL, AND RETURN. THE CASE OF THE PARMA BAPTISTERY
Cultural Heritage Parma baptistery Photogrammetry Laser scanning Modelling Integration
2019/3/4
Although this is not always the common practice, the survey should be an essential preliminary stage to any operation of restoration, enhancement and promotion of cultural heritage. Today, various sur...
ABOVEGROUND BIOMASS ESTIMATION USING RECONSTRUCTED FEATURE OF AIRBORNE DISCRETE-RETURN LIDAR BY AUTO-ENCODER NEURAL NETWORK
Aboveground Biomass (AGB) Estimation Discrete-Return LiDAR Regression Auto-Encoder Neural Network
2018/5/14
Aboveground biomass (AGB) estimation is critical for quantifying carbon stocks and essential for evaluating carbon cycle. In recent years, airborne LiDAR shows its great ability for highly-precision A...
Energy return on investment, energy payback time, and greenhouse gas emissions of coal seam gas (CSG) production in China: a case of the Fanzhuang CSG project
Coal seam gas EROI Energy payback time Greenhouse gas emissions Global warming potential China
2018/4/2
The studies and development of coal seam gas (CSG) have been conducted for more than 30 years in China, but few of China’s CSG projects have achieved large-scale commercial success; faced with the boo...
CLIFF COLLAPSE HAZARD FROM REPEATED MULTICOPTER UAV ACQUISITIONS: RETURN ON EXPERIENCE
UAV 3D point clouds photogrammetry cliff collapse hazard Normandy France
2016/11/11
Cliff collapse poses a serious hazard to infrastructure and passers-by. Obtaining information such as magnitude-frequency relationship for a specific site is of great help to adapt appropriate mitigat...
Small-Footprint Discrete-Return LIDAR in Tree Species Recognition
Airborne laser scanning Single tree Intensity Classification Monoplotting Crown modeling
2016/1/25
In forest inventories, the species information is crucial for economical, ecological and technical reasons. Species recognition is
currently a bottleneck in practical remote sensing applications. He...
LASER PULSE CORRELATION: A METHOD FOR DETECTING SUBTLE TOPOGRAPHIC CHANGE USING LIDAR RETURN WAVEFORMS
LIDAR laser altimetry waveforms natural hazards surface deformation
2015/3/10
We present a technique for using the recorded laser return pulse as a raw observation to detect centimeter-level vertical topographic change from large footprint airborne and spaceborne laser altimetr...
PROCESSING OF SHUTTLE LASER ALTIMETER RANGE AND RETURN PULSE DATA IN SUPPORT OF SLA-02
space-borne laser altimetry remote sensing laser bounce-point geolocation laser backscatter modeling
2014/12/22
The second flight of the Shuttle Laser Altimeter (SLA) flew on board the space Shuttle Discovery, during August 1997 during the STS-85 Mission. The nearly 3 million laser shots transmitted during the ...
VEGETATION CHARACTERISTICS USING MULTI-RETURN TERRESTRIAL LASER SCANNER
terrestrial laser scanning vegetation mapping point cloud processing DEM/DTM
2014/6/5
Distinguishing vegetation characteristics in a terrestrial laser scanner dataset is an interesting issue for environmental assessment. Methods for filtering vegetation points to distinguish them from ...
COMPARISON OF DISCRETE RETURN AND WAVEFORM TERRESTRIAL LASER SCANNING FOR DENSE VEGETATION FILTERING
Terrestrial Laser Scanner DTM full-waveform analysis vegetation filtering multi-target capability
2014/4/29
In this paper we present the results of the comparison between two terrestrial laser scanners (TLS), a discrete return system (Riegl LMS-Z620) and an echo-digitizing system (Riegl VZ-400), employed fo...
MAPPING UNDERSTORY TREES USING AIRBORNE DISCRETE-RETURN LIDAR DATA
small-footprin transmission loss canopy gap silviculture forest inventory
2014/6/5
Understory trees in multi-layer stands are often ignored in forest inventories. Information about them would benefit silviculture,
wood procurement and biodiversity management. Cost-efficient invent...
Associations between corporate health management and sickness absence, employee attrition, relapse, and return to work of employees with mental health problems: A cross-sectional analysis
corporate health management sickness absence employee attrition relapse return to work of employees mental health problems
2013/9/30
Objective: Although numerous corporations have mental health management, there is no clear association between those mental health management and the work outcomes of sick-listed employees. The presen...
Bit error rate (BER) performance of return-to-zero and non-return-to-zero data signals optical code division multiple access (OCDMA) system based on AND detection scheme in fiber-to-the-home (FTTH) networks
spectral amplitudes coding – optical code division multiple access detectionscheme subtraction technique non-return-to-zero (NRZ) and return-to-zero (RZ) pulse generator
2011/5/5
In this paper, we will focus on the modulation format used to create the optical pulses, which are
return-to-zero (RZ), and non-return-to-zero (NRZ). Bit error rate (BER) performance is evaluated
ba...
An ASE-Injected FP-LD-Based Return-to-Zero Transmitter for Long-Reach WDM-PONs
Fiber optics optical communications Fiber optics communications
2015/6/10
We propose and demonstrate a simple RZ transmitter based on incoherent-light-injected FP-LD which improves the dispersion tolerance by a factor of 1.5. Thanks to wide timing margin between adjacent bi...
Compact, Low Power and Low Threshold Electrically Pumped Micro Disc Lasers for 20Gb/s Non Return to Zero All Optical Wavelength Conversion
Wavelength conversion devices All-optical devices
2015/6/8
Using a 7.5μm wide InP Micro-Disc-Laser, with a very low ~100μA threshold current, heterogeneously integrated on top of Silicon on Insulator substrate, all optical NRZ wavelength conversion at speeds ...
Analyzing return loss deterioration of optical fiber joints with various air-filled gaps over wide wavelength range
Fiber characterization Fiber optics
2015/6/5
We experimentally investigated the return loss of optical fiber joints with various air-filled gaps. We discovered that the return loss might deteriorate to 8.6 dB for one connector and 5.9 dB for fou...