ID 原文 译文
38766 计算机仿真分析及实测数据处理表明,本方法很好地解决了传统反卷积方法对噪声敏感的问题,具有重要的工程应用价值。 The computer simulation analysis and the measured data processing show that the method to solve the problem of traditional deconvolution method is sensitive to noise, has the important value of engineering application.
38767 针对不确定性场景下小失效概率的精密产品可靠性问题,提出了基于双响应曲面法(dual response surface methodology,DRSM)与子集模拟的可靠稳健优化方法。 To a small failure probability of uncertain situations precision product reliability problems, is proposed based on dual response surface method (dual response surface methodology, DRSM) and subset simulation reliability robust optimization method.
38768 首先,建立精密产品多失效模式极限状态的RSM模型和以质量特性均值-方差为优化目标的功能函数DRSM模型。 First of all, to establish a precise product failure mode more RSM model and to the quality characteristics of limit state mean - variance DRSM model for optimizing target function function.
38769 其次,在此基础上运用子集模拟法进行可靠性分析,将精密产品小失效概率描述成一系列较大的条件失效概率之积。 Then using subset simulation method on the basis of reliability analysis, described precision products small failure probability of failure probability of a larger product.
38770 最后,将极值事件的优化问题视作稀有事件的可靠性问题的特例,基于该转换思想采用子集模拟法将优化问题在可靠性问题的框架内进行求解。 Finally, the extreme events of the reliability of the optimization problem as a rare event a special case of the problem, based on the transformation using subset simulation optimization problems within the framework of reliability problems to solve.
38771 案例分析及验证结果表明所提方法的有效性。 Case analysis and validation results show the effectiveness of the proposed method.
38772 针对无人机(unmanned aerial vehicle,UAV)通信信号三维空间传播特点,提出了基于多圆柱体的非平稳几何统计模型(geometry-based stochastic channel model,GSCM),该模型通过引入天线位置变换矩阵,可支持UAV和地面移动端(mobile terminal,MT)任意三维移动轨迹。 For UAV (unmanned aerial vehicle, UAV) signal characteristics of propagation of three-dimensional space, is proposed based on multiple cylinders of non-stationary geometric statistical model (geometry - -based stochastic channel model of GSCM), the model by introducing the antenna position transformation matrix, can support the UAV and ground mobile terminal (mobile terminal, MT) arbitrary three-dimensional movement.
38773 在此基础上,构建了适合硬件模拟实现的离散化模型,并设计实现了模拟时变信道特性的随机簇生灭算法,以及基于线性调频叠加原理的非平稳衰落模拟方法。 On this basis, build a discretization model for simulation of hardware, design and implements a simulation of the time-varying channel characteristic random tufted cut algorithm, and based on the principle of superposition of linear frequency modulation is non-stationary decline simulation method.
38774 硬件实测结果表明,本文信道模拟器输出的衰落幅值分布、时延功率谱和多普勒功率谱等统计特性与理论结果比较吻合,有效复现了信道时变衰落、多径时延、多径功率和多普勒频率随着UAV的位置和速度变化而变化的过程。 Hardware experimental results show that the channel simulator, the decline of the output amplitude distribution and time delay power spectrum and doppler power spectrum and other statistical properties compared with theoretical results, effective resembles the time-varying fading channel, multipath time delay and power of multipath and doppler frequency with the change of the position and speed of the UAV and the process of change.
38775 基于任务的装备器材具有非稳态、小样本等特征,针对其需求难以准确预测的问题,提出非稳态区间划分和支持向量回归(support vector regression,SVR)的预测方法。 Based on task of the equipment with unsteady and small sample characteristics, in allusion to the problem of the demand is difficult to accurately forecast, proposed the unsteady interval differentiate and support vector regression (support vector regression, the SVR) prediction method.