ID 原文 译文
55928 首先建立风场坐标系,将飞艇巡航到目标点的过程转化成类似的最优拦截问题;根据飞艇运动学、动力学状态变量变化的特点,引入比例导引法,将其进行3个快慢时间尺度的划分,建立基于奇异摄动法的数学模型; First of all, establishing the coordinate system, the wind field will airship cruise to the target point into the process of similar optimal interception problem;According to the characteristics of the airship kinematics, dynamics state variables changes, the introduction of proportional guidance law, the division of how quickly it three time scales, a mathematical model based on the singular perturbation method.
55929 再分别求解3个不同时间尺度上的子问题,得到解析解;最后,给出了一个仿真算例,结果表明,所提方法是有效的,具有一定的工程应用前景。 To solving three different time scales of subproblems, get analytic solution;Finally, a simulation example is given, the results show that the proposed method is effective and has a certain engineering application prospects.
55930 为解决多径环境下米波雷达对低空目标探测问题,本文结合信号空域稀疏性和多径模型下的复合导向矢量提出了一种多径环境下高分辨的低空测角方法,能够有效地克服多径效应问题。 Meter wave radar to solve multipath environment to the problem of low altitude target detection, this paper combined with sparse and multipath signals the airspace under the model of composite oriented vector proposes a high resolution multipath environment of low Angle measuring method, can effectively overcome the multipath effect.
55931 该方法首先利用多径模型下的先验信息产生复合导向矢量,然后利用该导向矢量构造压缩感知矩阵,此时的感知矩阵是整合了多径衰减系数和回波角度关系等先验信息,同时通过对多快拍数据矩阵的奇异值分解获得较高信噪比的信号数据矩阵,继而利用感知矩阵和信号数据矩阵建立最优化L1范数约束求解模型,最后利用凸优化工具求解稀疏空间谱,估计直达波和反射波入射角度值。 This method firstly by using the prior information to produce composite multipath model oriented vector, then using the steering vector tectonic compression perception matrix, the perception of the matrix is integrated the multipath attenuation coefficient and echo Angle relationship a priori information, such as how fast and at the same time through the data matrix of singular value decomposition to obtain higher SNR signal data matrix, and then based on the perceived matrix and signal data matrix optimization L1 norm constraint solving model, finally using convex optimization tools for solving sparse space spectrum, estimate the direct wave and reflected wave incident Angle values.
55932 该方法能够增强信息矢量稀疏性,在较低信噪比下可获得高分辨的角度估计性能。 This method can enhance the information vector sparse, under low SNR can obtain high resolution Angle estimation performance.
55933 仿真实验证明了该方法的优越性。 The simulation experiment proves the superiority of this method.
55934 针对k维子空间法尺度参数选择的盲目性,提出了基于估计参数的势函数方法。 In view of the scale parameter k d subspace choice blindness, potential function method based on the estimated parameters is proposed.
55935 首先根据观测信号估计出基准值r1,并根据基准值r1选取势函数f的尺度参数σ1,由势函数f估计出聚类平面后,根据聚类平面估计出基准值r2,根据基准值r2选取势函数g的尺度参数σ2,并由势函数g估计出混合矩阵。 First of all, according to the observation signal to estimate the total r1, and according to the basic value r1 selection of potential function f scale parameter sigma 1, by the potential function f estimate the clustering after the plane, according to the basic value clustering plane estimate the r2, selected according to the basic value r2 parameter sigma 2 of the scale of the potential function g, and the potential function g estimate the mixing matrix.
55936 该方法充分利用了观测信号的统计特性,实验结果表明,在无噪条件下,该方法比改进前的方法在矩阵估计方面误差减小了75%,较其他方法误差减小了1 The method makes full use of the statistical characteristic of the observation signals, the experimental results show that under the condition of no noise, the method to improve this method than before in matrix estimation error is reduced by 75%, compared to other methods of error reduced to 1
55937 在超视距空战中获取的原始数据信息常常并不精确且包含不完备信息,而且现有方法不能反映战机机动对态势的影响,造成决策结果的可信度不高,对此提出基于区间集对分析(set pair analysis,SPA)的超视距空战态势评估方法。 The raw data information in beyond visual range air combat, often included is imprecise and incomplete information, and the existing method cannot reflect the effects of aircraft maneuvering of situational, the credibility of the decision result is not high, are put forward based on the interval set pair analysis (the set pair analysis, SPA) beyond visual range air combat situation assessment method.