ID 原文 译文
49647 测试结果表明，该方案能够实现10fs量级的时间同步测量，为高精度时间同步研究提供了新的方法。 Test results show that the proposed scheme can achieve 10 fs level of time synchronization measurement, provides a new method for the research of high precision time synchronization.
49648 如何有效地利用宽带信号各频点所提供的信息实现高精度波达角(direction of arrival，DOA)估计一直是热点问题， How to effectively use information provided by the broadband signals in each frequency point to realize high precision Angle of DOA (direction of concatenated, DOA) estimation has been the hot issues,
49649 针对宽带DOA估计问题，提出一种基于孔径扩展的子带信息融合(subband information fusion，SIF)DOA估计方法。 for broadband DOA estimation problem, put forward a kind of aperture extension based subband information fusion (subband information fusion, SIF) DOA estimation method.
49650 该方法在宽带信号的频域模型基础上，结合虚拟阵列方法实现孔径扩展，并联合各子带信息统一处理，从而提高DOA估计的精度。 The method is based on the broadband signal in the frequency domain model, combined with the virtual aperture array method is extended, and the joint of each subband information processing, so as to improve the accuracy of DOA estimation.
49651 与其他SIF方法相比，该方法利用二阶统计量将数据转化为单快拍模型， Compared with other methods of SIF, the method using second order statistics data into a single snapshot model,
49652 不仅提高了可估计信源数目，而且极大程度地降低了运算复杂度， not only improves can estimate the source number, and drastically reduced the computation complexity,
49653 同时在小快拍、低信噪比条件下仍能得到DOA估计结果。 at the same time in the small snapshot, low SNR conditions can still get the DOA estimation results.
49654 仿真实验验证了所提方法的有效性。 Simulation experiments verify the effectiveness of the proposed method.
49655 提出了适用于面阵中的基于级联多重信号分类(multiple signal classification，MUSIC)方法的二维波达方向(direction of arrival，DOA)估计算法。 Put forward the suitable for array based on cascade of multiple signal classification (multiple signal classification, MUSIC) method of 2-d DOA (direction of concatenated, DOA) estimation algorithm.
49656 该算法仅采用级联的一维搜索即可实现二维DOA的联合估计，避免了经典二维MUSIC算法的复杂计算量，复杂度大大降低，同时角度估计性能非常接近经典二维MUSIC算法。 The algorithm with a cascade of one-dimensional search only two-dimensional joint estimation of DOA can be realized, avoiding the complex computation of classic 2-d MUSIC algorithm, complexity is greatly reduced, at the same time Angle estimation performance is very close to the classic 2-d MUSIC algorithm.