ID 原文 译文
8994 该方法将二分类相关向量机(relevance vector machine,RVM)扩展为多类分类RVM概率模型,并对不同HRRP特征样本进行分类,利用每个多类分类RVM输出的样本后验概率信息计算出的熵值自适应为各个样本赋予权重,使得不同分类器以及同一分类器对不同样本的决策占有不同的比重,熵值越大的样本赋予的融合权重越低,最后通过加权投票方法实现融合识别,得到目标的最终识别结果。 This method will two relevance vector machine classification (relevance vector machine, RVM) RVM extend multiple class classification probability model, classify and characteristics of different HRRP samples, samples of each class classification of RVM output more information to calculate the posterior probability of the adaptive entropy weights for each sample given, make different classifier, and the same classifier decisions on different samples have different proportion, the greater the entropy of fusion weights given by the sample is lower, the vote by weighting method fusion recognition, get the target recognition results in the end.
8995 仿真实验结果验证了所提方法的有效性。 The simulation results verify the effectiveness of the proposed method.
8996 为提高卫星信息传输过程中窃听难度,提出一种基于方向-极化状态调制技术的双极化卫星多输入多输出(multi input multi output,MIMO)安全传输方法。 To improve the hacking the difficulty in the process of satellite information transmission, put forward a direction - the state of polarization modulation technology based on the dual polarization satellite multiple input multiple output (multi input multi output, MIMO) secure transport method.
8997 该方法将传输信号的极化状态与接收机方位信息相结合,实现信号差异性发射,增大非期望方向接收机解调信息的难度。 The method to transmit the polarization state of the combined with the receiver position information, realize the differences between signal emission, increase the difficulty of the undesired direction demodulation receiver information.
8998 理论分析和仿真结果表明,相比于传统调制技术,基于方向-极化状态调制技术为双极化卫星MIMO系统的信息传输提供了一种更加安全的传输方案。 Theoretical analysis and simulation results show that compared with the traditional modulation technology, based on double polarization direction - state of polarization modulation technology for multi-input multi-output (MIMO) system of satellite information transmission provides a more secure transmission scheme.
8999 提出了一种基于叠加度的系统卢比变换(Luby transform,LT)码编码方案。 Puts forward a system based on overlay rupees transform (Luby transform, LT) code coding scheme.
9000 与需要预编码的系统Raptor码或交织编码的准系统掺杂LT码方案不同,由掺杂度分量与弱鲁棒孤波分布进行叠加的叠加度分布,使得系统LT码的中间节点能以LT编码方式构造输出节点。 And need precoding system Raptor code or mixed coding standard system doped LT code scheme, by doping level component and distribution of the weak robust soliton of superposition degree distribution, makes the system intermediate nodes to LT LT code output node structure.
9001 理论分析了优化掺杂度分量叠加比例的系统LT码具有译码渐近性能,对给定码长k和冗余开销ε的编译码复杂度为O(k·ln(1/ε))。 Scale component superposition theory to analyze the optimal doping degree system of LT codes decoding asymptotic performance, for a given yards long k and redundant overhead epsilon encoding decoding complexity is O (k, ln (1 / epsilon)).
9002 仿真验证了优化后的有限长系统LT码克服了系统Raptor码在信道删除概率大于0.01即出现误码平台的问题,在译码失败概率10-4时相对于准系统掺杂LT码的所需译码冗余开销可降低12% Simulation verify the finite length of the optimized system LT code to overcome the system Raptor code in channel delete probability is greater than 0.01 the problems of error platform, the decoding failure probability 10-4 when compared with the standard system doped LT codes needed to decode the redundant costs can be reduced by 12%
9003 针对同时经历性能退化过程和外界冲击过程的系统,在假设性能退化过程为线性退化过程,冲击过程分别为极值冲击模型和δ冲击模型的基础上,分析了性能退化量对突发失效的失效阈值影响,建立了基于变失效阈值的竞争失效可靠性模型,求出了系统可靠性的解析表达式。 For experience at the same time performance degradation process and external shock system, under the assumption that performance degradation process for linear degradation process, impact process of extremum respectively impact model and the delta impact model, on the basis of analysis of the performance degradation of failure threshold effects of sudden failure, based on variable reliability failure threshold competition model, the analytical expression of the system reliability.