ID 原文 译文
23985 仿真实验证明,该文方法能有效改善多普勒频偏所带来的 1 维距离像结构破坏和旁瓣抬升。 Several simulations verify the effectiveness of the method in improving High Resolution Range Profile (HRRP) with Doppler offset.
23986 该文研究了一种由电磁环境对电子设备产生的数字干扰来驱动的切换飞行控制系统性能分析模型。 This paper proposes the performance analysis model of switched flight control systems driven by the digital upsets when electronics devices are subject to electromagnetic environments.
23987 其中,从电磁干扰的产生原理角度,采用隐马尔可夫模型(Hidden Markov Model, HMM)描述数字电磁干扰特性并对其进行建模分析,同时针对 HMM 参数训练算法存在对初值选择敏感的问题,提出一种快速的初值选择策略,可以在经典 Baum-Welch 算法迭代下达到指定的收敛精度。 Hidden Markov Model (HMM) is used to describe the characteristics of digital upsets and construct the model based on the theory of the electromagnetic interferences. The parameter estimation algorithms of the traditional training method for HMM are sensitive to initial parameters, therefore, this paper proposes a fast initial parameter selection strategy which can also accelerate the training processes.
23988 最后将 HMM 电磁干扰注入分布式飞行控制系统性能观测平台,从理论与仿真的角度对比了不同电磁环境下分布式飞行控制系统的性能下降情况。 At the end, HMM-based electromagnetic interferences are fed to the performance observation platform for the distributed flight control systems. This paper also compares multiple performance degradation results under different electromagnetic fields from theory and simulation perspectives.
23989 仿真实验表明:与已有的数字电磁干扰建模分析方法相比,HMM 具有更高的准确度,并且仿真所得性能下降程度与理论分析一致。 Simulation results demonstrate HMM model can characterize the digital electromagnetic upsets more accurately compared to the existed digital electromagnetic models, and simulation results of the corresponding performance degradation are consistent with the theoretic results.
23990 为提高次用户接入业务端到端传输性能,该文提出通过感知节点检测性能和业务类型的频谱检测与资源分配联合优化方法。 Joint optimization of cooperative spectrum detection and resource allocation based on the service profile is investigated to enhance end-to-end transmission performance of the secondary users by selecting the sensing nodes.
23991 首先,将上周期全局检测性能构造的有效检测指数作为调节权值,计算信道状态自适应协作门限,据此选择协作模式,以最大化有效检测区间,并根据频带稳定性和有效性特征构造可用频谱空间。 At first, the adaptive cooperation thresholds are adjusted according to the weight of available detection index based on the global detection metrics in the last round. And the optimal cooperative mode can be selected to maximize the available sensing region. The idle channels are managed depend on the stability and the available bandwidth metrics for different secondary users.
23992 随后,基于业务请求接入速率将接入业务分为时延敏感业务和可靠性敏感业务两类,通过业务属性匹配的频谱分配算法提高接入业务的端到端传输成功率。 Then, the secondary users can be divided into two categories based on the requested rates, delay sensitive services and reliability sensitive services. The idle channels for the secondary users with different quality of service demands are selected depend on the service profile for enhancing end-to-end transmission performance.
23993 仿真显示,在不同信道状态下,所提算法通过自适应调整全局检测性能扩大了 Rayleigh衰落信道的有效频谱检测区间,降低了时延敏感业务的中断概率。 Simulation results show that the proposed algorithm can expand the available sensing region through adjusting the global detection metrics adaptively in Rayleigh fading channel and increase the resource utility by decreasing the outage of delay sensitive services.
23994 该文针对基于非负低秩稀疏图的半监督学习算法不能准确地描述数据结构的问题,提出一种融合平滑低秩表示和加权稀疏约束的改进算法。 Semi-supervised learning algorithm based on non-negative low rank and sparse graph can not describe the structures of the data exactly. Therefore, an improved algorithm which integrates smoothed low rank representation and weighted sparsity constraint is proposed.