ID 原文 译文
20665 测试结果表明，所提方法可以实现洪涝受灾区域的快速、精确提取。 The test results show that this method can realizethe rapid and accurate extraction of waters in flood disaster area.
20666 针对SIMO-OFDM系统下的信道估计和符号检测问题，该文建立了接收数据矩阵的平行因子分析(PAR-AFAC)模型， To solve the problem of the joint blind channel estimation and symbol detection for SIMO-OFDMsystems, a PARAllel FACtor (PARAFAC) analysis model of the receive data matrix is established.
20667 利用PARAFAC模型中离散傅里叶变换矩阵的行满秩特性，结合数据矩阵的奇异值分解，提出了一种信道与符号联合盲估计的闭式求解方法。 Then, with the full row rank characteristic of the discrete Fourier transform matrix and the singular value decomposition of the receiving data matrix, a closed method is proposed for joint blind channel estimation and symbol detection.
20668 由于提出的求解方法无须进行迭代便可以完成信道估计和符号检测，因此其计算复杂度低， The proposed method has low computational complexity because it has no iteration.
20669 此外，利用PARAFAC模型实现信道和符号的同时计算，避免了因信道估计误差导致的符号误码率性能下降问题。 Furthermore, by the simultaneously calculated of channel and signals, the proposed method can avoid the performance reduction of signal estimation caused by channel estimation error.
20670 仿真结果表明，与传统方法相比提出的方法计算复杂度更低，估计性能更好。 Simulation results show that the proposed method haslower computational complexity and better estimation performance compared with traditional methods.
20671 卷积盲源分离可以在频域得到有效解决，但频域盲源分离必须解决排序模糊问题。 The convolutive blind source separation can be effectively solved in frequency domain, but blind source separation in frequency domain must solve the problem of ranking ambiguity.
20672 该文提出一种基于区域增长校正的频域盲源分离排序算法。 A frequency-domain blindsource separation sorting algorithm is proposed based on regional growth correction.
20673 首先对卷积混合信号短时傅里叶变换，在频域的各个频点处建立瞬时模型进行独立分量分析，在此基础上使用分离信号功率比的相关性，对所有频点进行逐点排序置换。 First, the convolutionalmixed signal short-time Fourier transform is used to establish an instantaneous model at each frequency pointin the frequency domain for independent component analysis. Based on this, the correlation of the power ratioof the separated signal is used to sort all frequency points one by one replacement.
20674 其次根据阈值将排序后的结果划分为若干个小区域。 Second, according to thethreshold, the sorted result is divided into several small areas.