搜索结果: 1-15 共查到“工学 Kriging”相关记录40条 . 查询时间(0.172 秒)
梯度增强的Stochastic Co-Kriging模型建模及其在CFD非嵌入式不确定性量化中应用的研究进展（图）
梯度增强 Stochastic Co-Kriging 模型建模 CFD 非嵌入式 不确定性
2019/10/30
作为一项极其复杂的系统工程，飞行器的研制总会受到制造误差、飞行状态等诸多不确定性因素的影响，如果这些不确定性因素在设计过程中被忽视，很可能会导致飞行器整体性能急剧变差，甚至造成致命性的灾难。因此，近年来飞行器的不确定性研究方法和手段在航空航天领域得到了广泛应用，NASA早在2002年就开始着手规划考虑不确定性因素影响的研究工作，AIAA和ASME每年都举办关于不确定性研究的专题研讨会。当前我国各型...
梯度增强的Stochastic Co-Kriging模型建模及其在CFD非嵌入式不确定性量化中应用的研究进展（图）
梯度增强 Stochastic Co-Kriging 模型建模 CFD非嵌入式 不确定性量化
2019/10/16
作为一项极其复杂的系统工程，飞行器的研制总会受到制造误差、飞行状态等诸多不确定性因素的影响，如果这些不确定性因素在设计过程中被忽视，很可能会导致飞行器整体性能急剧变差，甚至造成致命性的灾难。因此，近年来飞行器的不确定性研究方法和手段在航空航天领域得到了广泛应用，NASA早在2002年就开始着手规划考虑不确定性因素影响的研究工作，AIAA和ASME每年都举办关于不确定性研究的专题研讨会。当前我国各型...
提出了一种基于主动学习Kriging的飞行器射程评估方法；结合高超声速飞行器的特点，通过将气动、推进、质量学科的不确定性因素注入飞行器设计多学科分析模型，构建飞行器射程概率评估模型；进而，利用主动学习策略序列加点方法建立射程评估代理模型，实现对射程及设计裕度的量化分析；仿真结果表明：该方法合理可行，显著提升了射程评估效率。
IMPLEMENTATION OF KRIGING METHODS IN MOBILE GIS TO ESTIMATE DAMAGE TO BUILDINGS IN CRISIS SCENARIOS
Kriging methods Mobile GIS natural hazard
2016/7/8
In the paper an example for the application of kriging methods to estimate damage to buildings in crisis scenarios is introduced. Furthermore, the Java implementations for Ordinary and Universal Krigi...
Rasterizing Airborne Laser Scanning Point Clouds by Block Kriging
Airborne laser scanning Point clouds Rasterization Block Kriging Geostatistics
2015/12/9
Airborne laser scanning (ALS) is increasingly becoming a standard method for the collection of dense elevation models, especially in 3D urban mapping. However, automation in processing of ALS point-cl...
Revealing celtic fields from LIDAR data using Kriging based filtering
LIDAR archaeology ltering geostatistics
2015/8/25
A detailed elevation model of the Netherlands has been acquired with the use of Airborne Laser Altimetry and is managed by AHN(Actueel Hoogtebestand Nederland). This elevation model can be used for a ...
Modelling Local Gps/levelling Geoid with The Assesstment of Inverse Distance Weighting and Geostatistical Kriging Methods
Geodesy Modelling DEM/DTM
2015/7/6
According to wide spread use of satellite based positioning techniques, especially GPS (Global Positioning System), a greater
attention has started to be paid to precise determination of geoid models...
An Ionosphere Estimation Algorithm for WAAS Based on Kriging
Ionosphere Estimation Algorithm WAAS Based Kriging
2015/6/26
GPS alone cannot provide the integrity needed for air navigation. Several error sources deteriorate the precision of the position estimate. One of the largest and more unpredictable sources of error f...
Adapting Kriging to the WAAS MOPS Ionospheric Grid
Adapting Kriging WAAS MOPS Ionospheric Grid
2015/6/26
The most productive way to increase the availability of single frequency users of the Wide Area Augmentation System (WAAS) is by decreasing the Grid Ionospheric Vertical Error (GIVE). Currently the GI...
Ionospheric Estimation using Extended Kriging for a low latitude SBAS
Ionospheric Estimation Extended Kriging latitude SBAS
2015/6/26
The ionosphere causes the most difficult error to mitigate in Satellite Based Augmentation Systems (SBAS). The problem has been solved for the mid latitude regions using the thin shell approximation. ...
A New Ionospheric Estimation Algorithm for SBAS Combining Kriging and Tomography
Ionospheric Estimation Algorithm SBAS Combining Kriging Tomography
2015/6/26
One can divide the existing ionospheric methods for SBAS in two categories: tomography and methods relying on the thin shell model. At first sight, tomography appears to be the right choice. Tomograph...
Kriging插值算法被广泛应用于地学各领域，有着极其重要的现实意义，但在面对大规模输出网格及大量输入采样点时，不可避免地遇到了性能瓶颈。利用OpenCL和OpenMP在异构平台上实现了CPU与GPU协同加速普通Kriging插值。针对Kriging插值中采样点的不规则分布及CPU和GPU由于体系结构差异对其的不同适应性，提出一种基于不同设备间计算性能的差异和数据分布特点的负载均衡方法。试验结果表...
The Use of the Ordinary Kriging Techniques in measuring the sustainability in Sugar Beet Area,Nubariya,Egypt.
Agric. Sustainability GIS and Geo-statistical analysis
2015/2/3
One of the most important indicators that illustrate the success of the sustainability in the newly reclaimed lands in Egypt is the increase of the stabilization. In this study, a set of villages repr...
利用基于滑动Kriging插值的无网格局部Petrov-Galerkin (MLPG) 法来求解二维结构动力问题，Heaviside分段函数作为局部弱形式的权函数并采用精细积分法来离散时间域。基于滑动Kriging插值构造的形函数满足Kronecker Delta性质，因此可以直接施加本质边界条件。刚度矩阵形成过程中只涉及到边界积分，而没有涉及到区域积分和奇异积分。计算结果表明：基于滑动Krigi...
采用ARMA模型模拟具有时间和空间相关性的大跨结构的随机风速时程。并对Whittle递推算法进行了改进,求解出自回归系数和滑动回归系数矩阵。利用MATLAB软件编制了模拟大跨桥梁的风速时程模拟程序，运行结果表明: 改进的方法计算效率高,模拟精度符合要求。然后又利用时空Kriging插值法对控制点区域内节点的脉动风速时程进行模拟，其模拟精度较好且求解过程快，可用于大跨空间结构、超高层建筑等含有大量节...