ID 原文 译文
14435 实验证明,改进的算法均优于现有的推荐算法,有效提高了推荐质量。 The final degree of trust is combined with the probability matrix model to realize the recommendation. Experiments show that the improved algorithms are better than the existing recommendation algorithms,which effectively improves the quality of recommendations.
14436 相控阵天线需要足够的瞬时带宽以满足无线通信系统的性能要求。 Phased array antennas require sufficient instantaneous bandwidth to meet the performance requirements of wireless communication systems.
14437 分析了限制圆环相控阵天线瞬时带宽的影响因素,主要包括频率变化引起的天线波束指向偏差和天线孔径渡越时间对瞬时带宽的限制。 The influencing factors that limit the instantaneous band- width of circular phased array antenna are analyzed ,including the beam-pointing error caused by frequency change and the limitation of aperture fill time on instantaneous bandwidth.
14438 比较了圆环相控阵天线与线阵相控阵天线瞬时带宽的异同,并给出了圆环相控阵天线瞬时带宽的计算方法,为圆环相控阵天线的设计提供了理论指导。 The differences and similarities between the instantaneous bandwidth of circular phased array and linear phased array antenna are compared,and the calculation method of instantaneous bandwidth of circular phased array antenna is given , which provides theoretical guidance for the design of circular phased array antennas.
14439 入网设备的身份认证是工业互联网、物联网安全运行的基础。 The identity authentication of internet-connected devices is the basis for secure operation of in- dustrial Internet and Internet of Things.
14440 通过分析物理不可克隆函数(Physical Unclonable Function, PUF)作为入网设备的身份凭据应具有的特性,建立了其性能的多层指标体系。 This paper analyzes the characteristics of Physical Unclonable Function( PUF) as the identity credentials of the networked devices,and establishes a multi-layered metrics system for its performance in which three types of metrics( necessary metrics, important metrics and application metrics) are classified according to the importance of performance metrics.
14441 按照性能指标的重要性分为必要指标、重要指标和应用指标,对每项指标及其评估方法进行了说明,并给出了可用于PUF选型的综合评估方案。实验结果表明,该PUF性能指标体系和评估方案在工程上是可行的。 Each indicator and its evaluation method are explained,and a comprehensive evaluation scheme which can be provided for PUF selection is given.The experimental results show that the PUF performance metrics system and evaluation scheme are feasible in engineering.
14442 针对无线通信频谱资源有限并且利用率非常低的问题,研究了认知无线电系统中基于信号典型特征的频谱感知策略,并进行动态频谱检测。 For the problem of limited wireless communication spectrum resources and low utilization rate, this paper studies the spectrum sensing strategy based on typical characteristics of signals in cognitive radio systems for dynamic spectrum detection.
14443 提出了一种基于循环前缀频域自相关的频谱感知算法,利用正交频分复用(Orthogonal Frequency Division Multiplexing, OFDM)信号的循环前缀具有循环平稳特性,在信号频域进行自相关运算,设定判决门限,完成对信号频谱的检测,同时具备较好的抑制平稳噪声和干扰的能力。 A spectrum sensing algorithm based on cyclic prefix frequency do main autocorrelation is proposed. Based on the cyclic stationary of the cyclic prefix of the orthogonal frequency division multiplexing( OFDM) signal,this method performs autocorrelation operation in the frequency domain,sets the decision threshold and completes the detection of the signal spectrum. At the same time ,the method has a good ability to suppress stationary noise and interference.
14444 在低信噪比或者噪声不确定度大的应用场景下,能够获得比能量检测方法更优、更稳定的频谱感知效果,增强了噪声鲁棒性。 In application scenarios of low signal-to-noise ratio or high noise uncertainty, it can obtain better and more stable results of spectrum perception than the energy detection method, and enhance the noise robustness.