搜索结果: 1-15 共查到“工学 cross-section”相关记录15条 . 查询时间(0.078 秒)
RADAR CROSS SECTION CHARACTERIZATION OF CORNER REFLECTORS IN DIFFERENT FREQUENCY BANDS AND POLARIZATIONS
Corner Reflector Radar Cross Section Trihedral Dihedral Compact Antenna Test Range Facility Calibration
2019/2/28
Corner Reflectors (CR) are standard passive radar targets which offer one of the best solutions for SAR calibration. Radar Cross Section (RCS) of corner reflectors plays a vital role for estimation of...
Development of Cross Section Management System in Tunnel Using Terrestrial Laser Scanning Technique
Terrestrial Laser Scanning Technique Cross Section Management System in Tunnel
2015/12/16
Laser scanning technology with high positional accuracy and high density will be widely applied in vast range of fields including
geomatics. Especially, the development of laser scanning technology e...
Horizontal p-i-n High-Speed Ge Waveguide Detector on Large Cross-section SOI Waveguide
Photodetectors Integrated optics devices Photonic integrated circuits
2015/6/10
We report a novel high-speed Ge photodetector on a large cross-section SOI waveguide platform.The device is butt-coupled with waveguide using a horizontal p-i-n junction configuration to enable high-s...
Radar cross-section (RCS) analysis of high frequency surface wave radar targets
Electromagnetic scattering High frequency surface wave radar HFSWR Surveillance Radar cross-section RCS RCS prediction RCS reduction
2010/10/12
Realistic high frequency surface wave radar (HFSWR) targets are investigated numerically in terms of electromagnetic wave -- target interactions. Radar cross sections (RCS) of these targets are simula...
叶片类截面数据特征点精确识别方法（Accurate Recognition Method for Cross-section Data Feature Points of Blades）
叶片 特征识别 小波模极大值
2010/1/28
利用小波模极大值方法可很好地对特征进行识别，并能抑制噪声的影响。利用该方法对叶片截面数据进行特征识别时，某些重要的局部特征在细尺度下会消失，导致数据特征点不能完整识别，针对该情况提出特征尺度因子的概念，以了解数据中所含特征的差异性。特征尺度因子越大意味着可分解尺度数越多，相反则意味着可分解尺度数越少，当数据点的特征差异较大时，可将其分为几段分别进行识别，最后再将各段特征点汇总。实验证明，特征尺度因...
Momentum and Kinetic Energy Coefficients in Symmetrical Rectangular Compound Cross Section Flumes
Open channel Momentum coecient Energy coecient Flumes Compound cross section
2009/10/14
In this study a series of laboratory experiments was conducted in nine models of symmetrical rectangular compound cross section having di erent dimensions for a wide range of discharges in order to in...
Velocity Distribution in Channels of Rectangular Compound Cross Section
Open channel compound section velocity distribution
2009/10/14
A series of experiments have been carried out in order to measure velocity distribution in a straight symmetrical rectangular compound sections of varying floodplain width, main channel width and step...
On the Characteristics of an Absorbing Wavemaker with a Cross Section Having a Plumb Part near the Free Surface
Absorbing Wavemaker Active Wave Absorption FIR Digital Filter Absorption Efficiency Cross Section with a Plumb Part near the Free Surface Wave Reflection
2009/5/18
The characteristics of a plunger absorbing wavemaker are studied. In the present wave absorption system the wavemaker is controlled to absorb the incoming waves by means of digital filtering of wave e...
Buckling loads of columns of regular polygon cross-section with constant volume and clamped ends
Buckling load constant volume strongest column tapered column
2009/2/20
A numerical method is developed for calculating the buckling loads of tapered columns of regular polygon cross-section with constant volume and both clamped ends. The linear, parabolic and sinusoidal ...
Investigation of Unevenness of Some Fabric Cross-Section Parameters
fabric cross-section thread projection air permeability
2009/1/20
Woven fabric, as other textile materials, has a specific three-dimensional structure; fabric thickness to all intents and purposes is low in comparison with its length and width. On the other hand, th...
Modelling of Cross - Section and Frame Optimization For Chair Design
Cross - Section Frame Optimization Chair Design
2009/1/16
In this study, the effect of diagonal static loads on wooden joints in the production of solid wooden chairs was examined. According to the principle of equal moment distribution, the optimum chair fr...
A STUDY ON SEISMIC ANALYSIS METHODS IN THE CROSS SECTION OF UNDERGROUND STRUCTURES USING STATIC FINITE ELEMENT METHOD
underground structure seismic design substructure method static finite element method seismic load
2008/12/24
Based on the dynamic substructure technique, the author proposes a static seismic analysis method, the Ground Response Method, for underground structures modeled on the structure and surrounding s...
Determination of the continuous casting cross-section with prescribed average temperature
Solidification Stefan problem Heat equation Continuous casting
2011/3/17
This paper presents the method of determination of the continuous casting cross-section, in which average temperature was equal to a prescribed value. The method proposed here does not require evaluat...
Three Measurement Methods of Two-photon Absorption Cross-section
TPA TPA cross-section Measurement method Fluorescence
2011/12/8
Through the experimental dedign and theretical analysis,three technologies used for characterizing the two-photon absorption(TPA) properties,such as nonlinear transmission experiment and theory,Z-scan...
Bar element with variation of cross-section for geometricaly non-linear analysis
bar element variation of cross-sectional area geometric non-linear analysis finite element method
2010/3/11
This paper deals with a new bar element with varying cross-sectional area which can be used for geometric non-linear analysis. Shape functions of the bar element include transfer functions and transfe...