ID 原文 译文
48796 算法首先沿轴向对阵列进行虚拟平移,利用空间平滑技术处理数据以恢复协方差矩阵的秩,实现相干信号解相干,再依据轴向双圆阵列的结构特点构造波达方向矩阵,对波达方向矩阵进行特征值分解可得到包含俯仰角信息的特征值和包含俯仰角信息与方位角信息的特征矢量,完成相干信源DOA估计。 Algorithm firstly along the axial direction to virtual translation of array, using spatial smoothing technology to deal with the data to restore the covariance matrix of rank, realize the coherent signal coherent solution, then according to the structure characteristics of axial double circular array DOA matrix structure, the DOA matrix eigenvalue decomposition can be obtained with pitching Angle information of characteristic value and contains the characteristics of the pitching Angle and azimuth information vector, complete coherent source DOA estimation.
48797 算法将波达方向矩阵法引入均匀圆阵,估计参数自动配对,同时避免了常规算法的二维谱峰搜索,实时性好。 Algorithm to the introduction of the doa matrix method of uniform circular array, the estimated parameter automatic matching, at the same time avoid the conventional algorithm of two-dimensional spectrum peak search, good real-time performance.
48798 仿真结果表明,与矩阵重构的均匀圆阵旋转不变子空间(uniform circular array-estimation of signal parameters via rotational invariance techniques,UCA-ESPRIT)算法相比,本文算法计算量较小,分辨率高。 The reconstruction of the simulation results show that with the matrix of uniform circular array rotation invariant subspace (uniform circular array - estimation of signal parameters via rotational invariance techniques, UCA - ESPRIT) algorithm, the algorithm in this paper a smaller amount of calculation, high resolution.
48799 机载预警雷达固有的多普勒盲区容易造成目标航迹中断和重起批。 Inherent in the airborne early warning radar doppler blind area of target track is easy to break off and restart.
48800 针对该问题,提出了一种基于电子支援措施(electronic support measure,ESM)方位信息和多普勒盲区联合状态约束的粒子滤波跟踪算法。 Aiming at the problem, put forward a kind of based on electronic support measures (electronic support measure, ESM) bearing joint state constraint information and doppler blind area of particle filter tracking algorithm.
48801 该算法在预测过程中对盲区内的粒子进行约束,将不满足约束的粒子投影到约束区域表面。 The algorithm in the process of prediction to constraint of particles in the blind area, will not meet the constraint of the surface of the particle projection to constraint area.
48802 最后再利用这些约束粒子估计目标的状态,并形成粒子云波门,对新出现的量测值进行关联。 To estimate the states of the targets, finally re-use these constraints particles and forming particles yunbo door, to the emergence of new measurement value relevance.
48803 仿真结果表明,该算法相比无先验信息或仅利用多普勒盲区信息的算法具有更小的滤波误差,同时能形成更小的关联波门,提高了航迹质量,实现了多普勒盲区条件下的目标连续跟踪。 Simulation results show that the proposed algorithm compared with no a priori information or just using doppler algorithm has smaller filtering error of blind area information, can form a smaller correlation gate at the same time, improve the quality of the track, to achieve the goal of doppler blind area under the condition of continuous tracking.
48804 分布式阵列相参合成雷达是继多输入多输出(multiple-input multiple-output,MIMO)雷达之后的一种新体制雷达技术,在介绍其基本概念的基础上,建立了分布式阵列相参合成雷达的基本理论模型,提出了适用于分布式阵列相参合成雷达MIMO工作模式的正交波形设计方法,首次给出了分布式阵列相参合成雷达的部分实验结果,实验结果与理论分析一致,证明了理论模型的正确性。 Distributed array the circuit into radar is the multiple input multiple output (multiple - input multiple output, MIMO) radar after a new system radar technology, based on introducing the basic concept of, established a distributed array phase circuit into the basic theory of radar model, was presented, which is suitable for the distributed array circuit into orthogonal waveform design method of MIMO radar working mode, distributed array are given for the first time the circuit into radar part of experimental results, the experimental results are consistent with theoretical analysis, proves the correctness of the theoretical model.
48805 为研究隔离度寄生回路对全捷联导引头的影响,建立了全捷联制导模型,基于此模型通过无量纲变换获得了无量纲动力学模型,采用劳斯判据和系数冻结法研究了剩余飞行时间、制导参数、刻度尺偏差对制导稳定性的影响,利用伴随函数法研究了刻度尺偏差对脱靶量的影响。 For the study of isolation degree parasitic circuit of the strapdown seeker, the influence of the strapdown guidance model is established, based on this model by dimensionless transformation for no dimensional dynamic model of the lawes criterion and coefficient freezing method to study the remaining flight time, deviation of guidance parameters, the scale effect on the stability of the guidance, the adjoint function method was used to study the scale the influence of the deviation of miss distance.