搜索结果: 1-15 共查到“工学 Permanent”相关记录27条 . 查询时间(0.015 秒)
A QUATERNARY PROTOTYPE FOR SPATIOTEMPORAL ANALYSIS OF PERMANENT SCATTER INTERFEROMETRY
Satellite Remote Sensing Modeling Interferometric SAR (InSAR) SpatioTemporal Analysis Ground Deformation Hazards
2015/12/30
In this paper, a set of quaternary arc time series of the double phase differences formed by a PS (Permanent Scatter) with its surrounding four PSs in each quadrant are processed together, where the s...
MAPPING GROUND DEFORMATION BY RADAR INTERFEROMETRY BASED ON PERMANENT-SCATTERER NETWORK:ALGORITHM AND TESTING RESULTS
Ground Deformation Radar Interferometry PS Networking Atmospheric Signal Empirical Mode Decomposition
2015/12/30
The full operational capability of synthetic aperture radar (SAR) interferometry in deformation monitoring has not been achieved yet due to the negative influences of spatio-temporal decorrelation and...
Multipath Reduction on Repetition in Time Series from the Permanent GPS Phase Residuals
Spatial Information Sciences Geodesy Navigation Prediction GPS
2015/12/17
In this research, the newly developed Hilbert Huang Transformation method is applied to decompose the time-shifted post-fit GPS phase signal residuals into a range of fluctuating components from high-...
Establishment and Evaluation Aspects of Cyprus GPS Permanent Network for Mapping Applications
Navigation GPS/INS Spatial Infrastructures Urban Value-added System Mobile Mapping
2015/12/16
The study describes the design, installation, testing and use of a pilot permanent GPS stations network in Cyprus, for mapping purposes. In addition, it evaluates its operation in order to produce the...
THE AUTOMATION OF THE PROCESS OF LAND AREA CHANGE DETECTION IN PERMANENT MONITORING SYSTEMS
Land area Difference image Space imagery Change detection
2015/9/21
A new automation process for change detection of land area is proposed. The method is based on the use of multitemporal satellite images and their histograms. The proposed discrete representation of l...
permanent validation of the geometric calibration as complement to misr data production system
Automation Calibration Rectification Registration Pushbroom Quality Geometric Modeling
2015/9/1
This paper focuses on the validation aspect of the geometric calibration approach as implemented for the M...
Adjustment and transformation strategies of ItalPoS Permanent GNSS Network
GNSS Permanent Network Globk Adjustment Strategies Boucher Altamimi transformation
2015/8/28
A private network of 133 Global Navigation Satellite Systems (GNSS) permanent sites, named ItalPoS (Italian Positioning Service) and uniformly covering the entire Italian territory, was established in...
BENCHMARKING MOBILE LASER SCANNING SYSTEMS USING A PERMANENT TEST FIELD
GPS/INS Reference Data Systems Laser scanning Point Cloud Accuracy Mobile Geometric
2014/4/28
The objective of the study was to benchmark the geometric accuracy of mobile laser scanning (MLS) systems using a permanent test field under good coverage of GNSS. Mobile laser scanning, also called m...
Elimination of permanent deformation of travelling cranes box girders operating in foundry shops
Foundary material haundling Traveling crane Box girdes
2011/3/15
The serious problem in travelling cranes maintenance, crane supporting beams and other carrying elements of material handling facilities in foundry shops is phenomenon of permanent deformations.
Detection of static eccentricity for permanent magnet synchronous motors using the coherence analysis
Permanent magnet synchronous motor eccentricity fault diagnosis spectral analysis
2010/11/22
This paper reports on work to detect the static eccentricity faults for permanent magnet synchronous motor (PMSM) using spectral analysis methods. Measurements are carried out by collecting the stator...
Experimental investigation of shaft transducerless speed and position control of ac induction and interior permanent magnet motors
IPM Motor induction motor sensorless vector control speed and position control high frequency signal injection
2010/10/12
In order to drive AC motors with high efficiency and high motion performance, and to provide accurate speed/position control, motor shaft speed and/or position feedback is required. For this purpose, ...
THE GENETIC ASPECT OF THE SPRUCE STAND NATURAL REGENERATION IN THE PERMANENT FOREST RESEARCH PLOT ŠIJEC ON THE POKLJUKA PLATEAU
Picea abies (L).Karst natural regeneration genetic structure isozymes forest gene conservation
2009/11/26
The aim of the research was to check the ability of natural regeneration for sustainable conservation of Picea abies (L.) Karst. genetic resource in the permanent forest research plot Šijec on th...
CROWN DEFOLIATION OF PEDUNCULATE OAK (Quercus robur L.) ON PERMANENT RESEARCH PLOTS IN THE PERIOD FROM 1995-2000
forest pedunculate oak Quercus robur L. forest decline oak decline permanent research plot
2009/11/26
Permanent research plotting a crown defoliation survey on pedunculate oak was performed from 1995-2000 every August and included 192 grown trees in every year. On average from 1995 to 2000 conditions ...
永磁式涡流缓速器制动性能影响因素敏感性分析（Sensitivity Analysis on Influence Factors for Braking Performance of Permanent Magnet Type Eddy Current Retarder with Uniform Design）
永磁式涡流缓速器 制动性能 均匀设计
2009/11/3
在分析永磁式涡流缓速器制动力矩与结构参数关系的基础上，将均匀设计和回归分析方法引入到永磁式涡流缓速器制动性能影响因素敏感性分析中。以某型号的永磁式涡流缓速器为例，建立了制动力矩随转子鼓内半径、永磁体周向长度、气隙宽度、转子鼓轴向宽度和永磁体高度5个结构参数变化的回归模型，重点讨论了结构参数间交互作用以及各结构参数对制动力矩的影响程度，基于均匀试验设计和制动性能敏感性分析的结果，采用全排列法对结构参...
1QL—70型固定垄起垄机设计与试验（Design and Experiment of 1QL—70 Bed Former for Permanent Raised Beds）
起垄机 固定垄保护性耕作 修垄
2009/8/11
针对国内西北一年一熟绿洲农业区固定垄保护性耕作起垄机具缺乏的问题，设计了1QL—70型固定垄起垄机。分析和确定了起垄犁、垄面成形装置等关键部件的结构参数。采用熟地型起垄犁，具有较强的翻土和碎土能力；组合式垄面成形装置通过与圆柱形镇压滚筒配合，在起垄时不仅具有较好的垄面成形能力，而且能对垄床起到很好的镇压作用。田间试验表明：1QL—70型固定垄起垄机的起垄和修垄效果良好，起、修垄作业后垄形尺寸和垄面...