一种阵列互耦影响下的目标直接定位算法及其理论性能分析

发布时间：2018-06-04 15:55

本文选题：位置直接确定 + 辐射源　；参考：《电子学报》2017年05期

【摘要】：相比传统的两步定位方法,以Weiss和Amar等人提出的目标位置直接确定方法具有定位精度高、目标分辨率高、可避免"目标-量测"匹配等优势.本文基于该类定位方法的思想,提出了一种利用单个运动天线阵列对目标辐射源的直接定位算法.与已有直接定位算法不同的是,文中新算法考虑了阵列互耦的影响,并且能够实现阵列互耦参量和目标位置参量的解耦合估计.此外,文中还基于矩阵特征值扰动理论,定量推导了新算法参数估计的理论方差(包括目标位置估计方差和互耦向量估计方差),并且给出了全部参量估计方差的克拉美罗界.最后,该文通过仿真实验验证了新算法的优越性和理论分析的有效性.
[Abstract]:Compared with the traditional two-step localization method, the direct location determination method proposed by Weiss and Amar has the advantages of high positioning accuracy, high target resolution and avoiding "target-measurement" matching. Based on the idea of this kind of localization method, a direct location algorithm for target emitter using a single moving antenna array is proposed in this paper. Different from the existing direct location algorithms, the new algorithm takes into account the effect of array mutual coupling, and can realize the decoupling estimation of array mutual coupling parameters and target position parameters. In addition, based on the matrix eigenvalue perturbation theory, the theoretical variance of the new algorithm parameter estimation (including target position estimation variance and mutual coupling vector estimation variance) is derived quantitatively, and the Clemero bounds of all the estimated variances are given. Finally, the superiority of the new algorithm and the effectiveness of theoretical analysis are verified by simulation experiments.
【作者单位】：解放军信息工程大学信息系统工程学院;解放军信息工程大学数学工程与先进计算国家重点实验室;南京军区军务部;
【基金】：国家自然科学基金(No.61201381) 中国博士后科学基金面上项目(No.2016M592989) 信息工程大学优秀青年基金(No.2016603201);信息工程大学自主科研基金(No.2016600701)
【分类号】：TN911.7

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