ID 原文 译文
12024 传统针对空域相关色噪声的信源数估计算法在白噪声背景下的估计性能往往下降。 ‭Traditional for airspace correlated color noise source number estimation algorithm under the background of white noise estimation performance tend to decline.
12025 针对这一问题,提出了一种基于去特征处理的信源数估计方法。 ‭In order to solve this problem, this paper proposes a based on to deal with the characteristics of source number estimation method.
12026 该方法对数据协方差矩阵进行去特征处理,得到一组与特征值相对应的新数据协方差矩阵。 ‭The method to deal with the characteristics of the data covariance matrix, and get a set with eigenvalues corresponding to the new data covariance matrix.
12027 利用新数据协方差矩阵在信号和噪声子空间上的投影矩阵构造判决函数,进而实现信源数估计。 Using new data covariance matrix on the signal and noise subspace projection matrix structure decision function, then realize the source number estimation.
12028 仿真实验及对比数据表明该方法在包含有白噪声成分的色噪声背景下能够有效进行信源数估计,其突出优势表现在小快拍数、低信噪比条件下仍能准确估计信源数,而没有明显增加算法的运算量。 ‭Simulation experiment and comparison show that the method in contains white noise component of colored noise background effectively source number estimation, its outstanding performance in the small snapshot number, under the condition of low signal-to-noise ratio still can accurately estimate the source number, without a significant increase in computational complexity of the algorithm. ‭
12029 目前,元数据共享的研究主要集中在一些专业领域,使用的元数据格式不具有普遍适用性。 At present, the research of metadata sharing mainly concentrated in some professional field, use of metadata format does not have universal applicability.
12030 而且随着用户对于信息共享的需求不断提高,异构复杂数据的按需共享和同步成为亟待解决的问题。 And as the user demand for information sharing, heterogeneous demand of complicated data sharing and synchronization become a problem to be solved.
12031 首先,对信息共享技术进行了研究,提出了一种两层结构的元数据格式。 First of all, the technology of information sharing are studied, this paper proposes a two layer structure of metadata formats.
12032 第一层元数据为单独一类数据提供了统一的描述格式,第二层元数据统一管理第一层元数据以屏蔽不同类别元数据格式的差异。 The first layer metadata as separate data provides a description of the unified format, the second floor unified metadata management layer 1 metadata to mask differences of different category metadata format.
12033 其次,在信息共享系统中实现了多类数据在不同用户之间的数据同步,并对元数据的检索方法进行了改进,提高了效率。 Second, in the information sharing system to achieve the kind of data in the data synchronization between different users, and the metadata retrieval method is improved, and improve the efficiency.