ID 原文 译文
48656 通过对新混沌系统进行数值仿真,结果表明,这是一种有效的滤波方法。 Through the study of the numerical simulation of a new chaotic system, and the results show that this method is an effective filtering.
48657 多重信号分类(multiple signal classification,MUSIC)方法在少快拍数或者存在相干信源的情况下不能准确估计信号的波达方向,而压缩感知(compressive sensing,CS)方法在多快拍数或低信噪比情况下分辨性能不稳定,估计准确率受限。 Multiple signal classification (multiple signal classification, MUSIC) method in less number of fast, or the presence of coherent source cannot accurately estimate the doa of signal, and the compression perception (compressive sensing, CS) method in how quickly shoot number or identify performance under low SNR situation is not stable, limited estimation accuracy.
48658 提出了一种基于CS的MUSIC方法,简称CS-MUSIC,该方法针对不同的快拍数,建立二者之间的联系,构造出新的正交空间,获得尖锐的谱峰。 This paper proposes a method of MUSIC based on CS, hereinafter referred to as CS - MUSIC, the method according to different number of fast, and the relationship established between the two, constructs the new orthogonal space, get sharp peaks.
48659 理论分析和仿真结果表明,所提方法在不同快拍数条件下,具有较高的估计精度,克服了传统方法存在的缺陷,并且对噪声具有鲁棒性。 Theoretical analysis and simulation results show that the proposed method under the condition of different number of fast, has high estimation precision, overcomes the defects of the traditional method, and is robust to noise.
48660 火控攻击方案寻优是一个基于仿真的优化问题,针对传统优化方法计算量大而且耗时多的不足,运用序优化理论通过排序比较和目标软化等思想来缩小搜索空间、提高搜索效率。 Fire control attack scheme optimization is based on the simulation optimization problem, on a large amount of calculation and time-consuming traditional optimization method, using the sequence optimization theory by comparing sorting and target softening thought to narrow the search space and improve searching efficiency.
48661 首先建立了以导弹目标截获概率为效能指标的方案评估精确模型,然后用拟合后的基于误差反向传播(back propagation,BP)算法的神经网络作为粗糙评估模型,最后运用序优化搜寻达到一定目标截获概率的较优火控攻击方案。 For missile target acquisition probability was established by the accurate model for the evaluation of performance index of the solution, then use after fitting based on error back propagation (BP) back propagation, the algorithm of neural network as a rough evaluation model, finally using sequence optimization search better fire control reaches a certain target acquisition probability attack scenarios.
48662 算例分析表明,序优化方法能在确保以足够高的概率寻得足够好方案的同时,有效提高搜索效率。 Example analysis shows that the sequence optimization method can ensure that with a high enough probability find out good enough solution at the same time, improve the search efficiency.
48663 动能杆侵彻靶板的毁伤效果评估是一个复杂的问题。 Kinetic energy rod penetration target plate damage effect assessment is a complicated problem.
48664 由于动能杆的数量多,侵彻碰撞情况多达上千种,计算费力又耗时。 Due to the amount of kinetic energy rod, penetration crash, as many as thousands of computing laborious and time-consuming.
48665 针对这些问题,提出了一种评价毁伤效果的数学模型,建立了基于反向传播(back propagation,BP)神经网络的预测模型,给出了隐含层节点数的计算方法,并在网络节点作用函数和随误差的变化动态更改参数方面对BP神经网络进行了改进。 To solve these problems, this paper proposes a mathematical model of damage effect evaluation, based on back propagation (BP) back propagation, prediction model of neural network, the number of hidden layer node calculation method is given, and the network node function and dynamic change along with the change of error parameters of BP neural network is improved.