ID 原文 译文
9554 针对时域和频域不充分稀疏条件下的雷达信号欠定盲分离问题,提出了基于信号不同时延的累积量与三阶张量分解估计混合矩阵的方法,并通过修正子空间投影算法完成对雷达源信号的恢复。 For time domain and frequency domain are not sufficiently sparse radar signal under the condition of underdetermined blind source separation problem, put forward the cumulant based on signal different time delay and the third order tensor decomposition method to estimate the mixing matrix, and through the modified subspace projection algorithm to complete the LeiDaYuan signal recovery.
9555 首先将混合信号的四阶累积量表示成三阶张量,利用三阶张量分解获得混合矩阵估计值; ‭Will first mixed signal of fourth-order cumulant is expressed as the third order tensor, using the third order tensor decomposition for mixed matrix estimate;
9556 通过求解雷达源信号任意时频点处对应的估计矩阵的列矢量,得到该时频点处最优超定矩阵的伪逆并恢复源信号。 By solving LeiDaYuan arbitrary signal time-frequency points the estimate of the corresponding matrix column vector for the time-frequency points optimal the pseudo-inverse matrix and recover source signals.
9557 该算法可以解决复杂电磁环境下时频域同时混叠的雷达信号盲分离问题,仿真结果表明与现有算法相比提高了盲分离中混合矩阵估计性能和源信号恢复性能。 ‭This algorithm can solve complex electromagnetic environment time-frequency domain aliasing problem of radar signal blind source separation at the same time, the simulation results show that compared with the existing algorithm can improve the mixing matrix estimation in the blind source separation performance and source signal recovery performance.
9558 为了实现指挥信息系统自适应的决策支持,将上下文感知技术融入指挥信息系统的分析与设计,首先提出了C4ISR系统上下文元本体,借此定义指挥信息系统上下文环境的基本语义框架。 In order to realize the adaptive decision support command information system, the context awareness technology into the command information system analysis and design, first proposed the C4ISR system context yuan ontology, to define the basic semantic framework of command information system context.
9559 在此基础上,结合元本体以及面向目标的需求分析方法思想,提出了C4ISR系统上下文环境信息获取和建模表示方法。 On this basis, combining with the meta ontology and goal-oriented requirement analysis methods, puts forward the C4ISR system context information acquisition and modeling method.
9560 此外,将模糊本体推理技术引入指挥信息系统上下文环境推理分析环节,通过设计上下文环境模型到本体的形式化规约算法,有效地将指挥信息系统的上下文环境信息形式化,并通过本体推理技术,实现了对系统上下文环境的推理分析。 In addition, the introduction of the technique of fuzzy ontology reasoning to command information system context reasoning analysis, through the design context model to formal specification algorithm of ontology and effectively will command information system of the formal context information, and through the ontology reasoning technology, implementation of the system context reasoning analysis.
9561 针对传统证据冲突度量方法无法区分证据间冲突程度的差异,并且会在特定情况下失效的问题,提出一种基于改进余弦相似度的证据间定向冲突度量方法。 In view of the traditional conflict of evidence conflict between the metric method can't distinguish between degree of difference, and under certain conditions, solve the problem of a directional conflict between evidence based on improved cosine similarity metric method.
9562 通过将支持系数引入余弦相似度模型,使所提方法具有非对称性,从而能够区分证据间冲突程度的差异,同时还可解决基本余弦相似度模型不适合处理证据中包含非单子集焦元的问题。 ‭Through will support coefficient into the cosine similarity model, the proposed method has the asymmetry, so that they can distinguish between evidence conflict between degree of difference, but also can solve the basic cosine similarity model is not suitable for processing of evidence collection of jiao yuan included in the list.
9563 实验结果验证了所提方法的准确性和有效性。 ‭The experimental results verify the accuracy and effectiveness of the proposed method.