ID 原文 译文
22595 该算法把原有信号变换成两个不同子空间信号，构建了两个不同的冗余字典，对比采用一个冗余字典库，这种采用两个冗余字典的算法大大减少了原子数量，并且通过快速傅里叶变换，在一个冗余字典进行稀疏分解时，同时找到另一个冗余字典中的最匹配的原子。 In the algorithm, three-order polynomial phase signal is transformed into two subspace signals, and two over-complete dictionaries are structured based on the two subspace signals. Compared to one over-complete dictionary, the atoms are reduced enormously by using two over-complete dictionaries in the algorithm, and one matching atom can be obtained in one over-complete dictionary when another matching atom in another over-complete dictionary is obtained by using fast Fourier transform.
22596 因此该算法通过减少原子数量和采用快速傅里叶变换大大加快了稀疏分解速度。 Therefore the method can sparsely decompose three-order polynomial phase signal with low computational complexity by reducing the atoms and using fast Fourier transform.
22597 实验结果表明，相比于采用 Gabor 原子构建的冗余字典，采用匹配追踪算法与遗传算法及最近提出的基于调制相关划分的快速稀疏分解，它的稀疏分解速度更快，并且具有更好的收敛性。 Simulation results show that the computational efficiency of the proposed method is better than that of using Gabor atoms, genetic algorithm and the algorithm based on modulation correlation partition, and the sparsity is better.
22598 组网雷达的多视角特性有利于获取目标的真实空间结构。 The multi-angle characteristic of netted radar is helpful in obtaining the actual space structure of ballistic targets.
22599 该文在构建有翼进动目标回波模型的基础上，分析不同类型散射中心的微多普勒信息变化率的变化趋势，对微多普勒信息进行分离提取。 In this paper, the echo model for precession targets with vanes is established. Based on the model, the rate of change of micro-Doppler for different scattering centers are analyzed, and the micro-Doppler information is extracted.
22600 利用非线性最小二乘拟合获取散射中心的幅度、相位信息。 Then the nonlinear least-square fitting is introduced to obtain the amplitude and phase information of scattering centers.
22601 基于微动特征的不变性，利用多部雷达锥顶散射中心的幅度信息估计微动特征和坐标转换参数。 Amplitude information of scattering centers at the conical point obtained from radars is used to estimate micro-motion characteristics and parameters of coordinate transformation.
22602 然后根据各散射中心在不同视角上投影分量的差异，实现尾翼散射中心的匹配，之后求解散射中心的瞬时空间位置，实现目标重构。 According to the distinctions among different projection components of scattering centers under different perspectives, scattering centers of fins are matched, and the instantaneous space coordinates are calculated to reconstruct the targets.
22603 仿真验证了算法的有效性，并分析了微动参数和信噪比对重构结果的影响。 Finally, simulations verify the effectiveness of the proposed method, and the influence of micro-motion parameters and SNR (Signal to Noise Ratio) on reconstruction results are analyzed.
22604 多子集零相关区序列集适用于多小区环境下的准同步码分多址系统，可以同时消除小区内用户间干扰和小区间用户干扰。 Multiple Zero Correlation Zone (ZCZ) sequence sets are sutilable to Quasi-Synchronous Code-Division Multiple-Access  (QS_CDMA)  systems  to  remove  both  the  Multi-Path  Interference  (MPI)  and  the  Inter-Cell Interference (ICI).