ID 原文 译文
22835 认知雷达可以在探测过程中不断优化自身系统参数，实现与当前探测环境的匹配，从而能够改善雷达的探测性能。 For the cognitive radar system, the system parameters can be optimized to match the current environment during the detection procedure, so as to improve the radar detection performance.
22836 针对未知目标的探测问题，利用当前回波数据更新目标分量的估计值及其协方差矩阵，基于目标相关信息优化下一次探测所需的发射机波形和接收机滤波器，并构成一个闭环处理过程。 For the unknown target detection problem, the useful signal component estimate and its covariant matrix are updated using the current returns, then the transmit waveform and receive filter are optimized based on the information of the useful signal. A closed loop processing is formed.
22837 该文提出了两种优化途径，第 1种途径利用目标分量的估计仅优化下一次探测波形，在接收端采用广义匹配滤波器； The two optimization approaches are proposed. For the first approach, the transmit waveform design is based on the estimate of the useful signal, and the generalized match filter is used at  the  receiver.
22838 第 2 种途径将估计误差等效为信号依赖的噪声，联合优化发射波形与接收机滤波器。 For  the  second  approach,  the  estimate  error  of  the  useful  signal  is  equivalent  to  the  signal- dependent noise, and the transmit waveform and receive filter are jointly designed.
22839 计算机仿真分析表明，采用闭环迭代优化的方法是渐进等效的，并可以在相干累积获得的性能增益基础上，进一步改善雷达的探测性能。 The computer simulation result show that, the proposed methods are asymptotically equivalent, and they can improve the detection performance further, compared with the performance gain of the coherent accumulation.
22840 3 维多输入多输出(3D-MIMO)系统能有效提升频谱效率，提高系统容量。 Three Dimension Multi-Input Multi-Output (3D-MIMO) systems can effectively improve  frequency efficiency and system capacity.
22841 但用户数和天线数的剧增，无法保证所有用户的导频都正交，给 3D-MIMO 信道估计带来估计精度下降和复杂度增加等问题。 However, with the growing number of antennas and users, pilot sequences are non- orthogonal, which will affect the accuracy of 3D-MIMO channel estimation and increase complexity.
22842 该文分析了上行3D-MIMO 系统信道的结构稀疏特性和低秩特性，并基于这些特性提出一种信道估计算法，给出了算法的收敛性和复杂度。 In this paper, the structured sparseness and low rank property of 3D-MIMO channel are studied. By taking advantage of these properties, a channel estimation algorithm is proposed, and the convergence and complexity of the algorithm are analyzed.
22843 仿真结果表明估计算法能准确地恢复 3D-MIMO 的信道系数，并有较低的复杂度。 Simulation results verify that the proposed algorithm can accurately recover 3D-MIMO channel with low complexity.
22844 为消除基本宽线检测算子中的冗余计算量，提高算法的运算速度，该文提出一种宽线算子的快速实现方法：随机移动宽线算子。 To eliminate computation redundancy and improve speed of the basic wide line detector, a fast implementation, named randomized moving wide line detector, is proposed.