ID 原文 译文
47746 根据终端时刻的位置和速度解析结果,得到由一阶驾驶仪动力学引起的脱靶量和终端角度误差解析表达式。 According to the terminal point position and speed of analytic results, are caused by first order kinetics of pilot miss distance and terminal Angle error analytic expression.
47747 利用伴随法对解析脱靶量和终端角度误差的解析结果进行了仿真验证。 Using the adjoint method to parse the miss distance and terminal Angle error parsing results simulation verification.
47748 仿真和解析研究结果表明,当制导时间大于驾驶仪时间常数的15倍以上时,由初始方向误差和终端落角约束引起的脱靶量、终端角度误差都基本收敛到零。 Simulation and analytical results show that when the guidance time is more than 15 times bigger than the pilot time constant, caused by the initial orientation error and terminal Angle constraint of the miss distance and terminal Angle error are basic converge to zero.
47749 大多数子空间类谱估计算法,需要预先估计信源个数,而且当信号源相干或强相关时,不能直接应用基于信息论的估计方法。 Most subspace class spectrum estimation algorithm, it is necessary to estimate the source number in advance, and when the signal source strong coherent or related, cannot be directly applied estimation method based on information theory.
47750 针对接收信号为独立源与相干源并存的情况,提出一种新的基于矩阵重构的信源数估计算法。 For receiving signals in the case of independent sources and coherent sources in this paper, a new reconstruction of the source number estimation algorithm based on matrix.
47751 算法利用各个阵元接收数据与参考阵元接收数据的互相关信息,构造一个Toeplitz等效协方差矩阵解相干。 Algorithm USES the array yuan receives data and reference array yuan cross-correlation information of receiving data, to construct a coherent Toeplitz equivalent covariance matrix solution.
47752 理论分析证明,相比于复信号解相干的常规Toeplitz矩阵重构方法,算法节省一半的阵列孔径,而且对噪声发散性有一定抑制作用。 Theory analysis shows that, compared with the complex coherent general Toeplitz matrix reconstruction signal solution method and algorithm to save half of the array aperture, and has certain inhibitory effect on noise divergent.
47753 基于此构造矩阵采用特征子空间投影与特征值加权的方法构造判决函数来估计信源个数,仿真结果表明,算法在独立源和相干源并存的情况下,能准确估计出信源个数,性能优于空间平滑Akaike信息论准则法和空间平滑最小描述长度法。 Using feature subspace projection and based on this structure matrix eigenvalue weighted method to estimate the source number decision function, the simulation results show that the algorithm in the case of independent and coherent sources coexist, can accurately estimate the source number, the better performance than the spatial smoothing Akaike information criterion method and spatial smoothing minimum description length method.
47754 针对单元故障前工作时间服从指数分布的共载荷失效系统,提出了虚拟载荷的概念,建立了基于独立性假设条件的载荷—强度干涉(load-strength interference,LSI)模型与系统可靠性综合模型的概率等价关系,导出了基于单元故障率信息或试验数据的指数分布单元共载荷失效串联系统可靠性分析与评估模型,具体给出2种常用截尾试验情形下系统可靠度与平均故障间隔时间的点估计及置信下限估计公式,并运用Monte-Carlo模拟方法对所建立的共载荷失效模型进行了计算验证。 Former working time obey exponential distribution of unit faults common load failure system, puts forward the concept of virtual load, is established based on the independence assumption of load - strength interference (load - strength interference, LSI) model and the probability of system reliability integrated model equivalence relation, the failure rate is deduced based on the unit test data or information of exponential distribution unit load total failure in series system reliability analysis and evaluation model, we give two commonly used truncation test case system reliability and MTBF point estimates and confidence lower limit estimation formula, and the use of Monte Carlo simulation method to establish the total load of failure model are calculated.
47755 针对校正源方位扰动误差会影响阵列误差矩阵校正精度这一问题,提出了一种可以自行抑制校正源方位扰动误差的鲁棒阵列误差矩阵校正算法。 For correction of matrix disturbance source azimuth error will affect the array error correction precision of this problem, this paper proposes a can restrain disturbance source azimuth error correction by robust array error matrix correction algorithm.