ID 原文 译文
49897 接着利用截断的奇异值分解求解杂波幅度矢量并重构杂波数据， then using the truncated singular value decomposition to solve the clutter amplitude vector and reconstructing clutter data,
49898 最后将实际的数据矩阵与重构的数据矩阵进行Frobenius范数拟合来估计阵元误差。 finally will be the actual data matrix and reconstruction Frobenius norm fitting of the data matrix to matrix estimation error.
49899 数值仿真实验结果表明，该方法在低脉冲数目、低样本数目的情况下均具有较好的参数估计精度与稳健性。 The results of numerical simulation experiments show that this method under the condition of low pulse number, low sample purpose are good parameter estimation accuracy and robustness.
49900 针对机载窄带雷达探测海面非合作舰船目标识别能力不足问题，首先建立了舰船横滚、俯仰和偏航三维微动下舰船运动方程，在此基础上建立了窄带雷达探测舰船的回波信号模型，分析了回波信号多普勒频率成分及其特征。 For airborne non-cooperative narrowband radar sea ship the shortage problem of target identification ability, first established the ship roll, pitch and yaw three-dimensional micro ship motion equation, based on the echo signal model of narrowband radar to detect the ship, analyzes the echo signal doppler frequency components and characteristics.
49901 理论分析结果表明，舰船三维微动会导致雷达回波信号的多普勒频率相对无微动情况下出现频谱展宽; 并且不同位置的散射点具有不同的时频变化曲线; Theoretical analysis results show that the three-dimensional micro vessels leads to radar echo signal doppler frequency relative appear without micro spectrum broadening; And different position of scattering points with different time-frequency curve;
49902 在短时间内，各散射点微多普勒时频曲线以类似LFM形式的线性关系变化，在较长时间内以类似正弦信号形式周期性变化，其周期与横滚角变化周期相同。 In a short period of time, the scattering points micro-doppler time-frequency curve in a similar form of LFM linear relationship changes, in the longer term periodic changes in the form of similar sine signal, the cycle is the same as the roll change cycle.
49903 针对传统波束形成算法的旁瓣效应在调频连续波多输入多输出(frequency modulated continuous wave multiple-input multiple-output，FMCW MIMO)雷达的成像结果中造成的方位向虚警问题，提出了一种基于方位向门限的改进成像算法。 Sidelobe effect against traditional beamforming algorithm in frequency modulation continuous wave multiple input multiple output (frequency modulated continuous wave multiple-input multiple output, FMCW MIMO) radar imaging results of orientation to the false alarm problem, puts forward an improved imaging algorithm based on orientation to the threshold.
49904 首先从原始数据中分别提取目标的距离向、方位向信息，然后单独将方位信息归一化之后使用门限检测实现了对方位向虚假目标的抑制，最后结合距离向信息与方位向信息得到了成像结果。 First, respectively, from the original data to information to extract target distance, azimuth, and then separate the azimuth information normalized after using threshold detection implements the other party to the inhibition of false target, finally combined with the distance to the information and location information to the imaging results were obtained.
49905 仿真成像实验证明，该方法能使得成像结果中的虚警概率明显降低，外场实验的成像结果进一步验证了所提出算法出色的成像性能。 Imaging simulation experiments show that this method can make the imaging results of significantly lower false alarm probability, a field experiment of imaging results further verify the good imaging performance of proposed algorithm.
49906 传统修正的偏置相位中心近似方法往往忽略距离历程近似误差的方位空变性，使得基于该方法的成像算法重建的图像出现近距离散焦和方位向偏移现象。 Traditional fixed bias phase journey distance approximation methods tend to ignore the center of the approximation error of azimuth empty degeneration and makes the imaging algorithm based on the method of reconstruction images appear close discrete focal to offset and azimuth phenomenon.