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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >Near optimal conformal antenna array structure for direction-of-arrival estimation
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Near optimal conformal antenna array structure for direction-of-arrival estimation

机译：接近最优共形天线阵列结构，用于到达方向估计

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This article determines the near optimal conformal antenna array structure for direction-of-arrival (DOA) estimation through a comprehensive study on the planar and usual conformal antenna arrays including the cylindrical and hemispherical by using the directive antenna elements in all designs. To model the hemispherical structure, an improved multi-face antenna array with three different tilts is proposed and compared with previous works in order to investigate the tilt effect and obtain the conclusive results. The Cramer-Rao lower bound, multiple signal classification, and root-mean-square error algorithms are utilized to evaluate the estimation accuracy of all conformal structures. Finally, by comparing the estimation precision of all conformal structures it is shown that the purposed multi-face structure as the hemispherical model has a better performance than other conformal structures in terms of the maximum angular coverage of the spatial resource. Moreover, the proposed study method in this article fully examines the impacts of the different conformal antennas geometric structure on the DOA estimation performance by involving the directive antennas radiation patterns.
机译：本文通过在所有设计中都使用定向天线元件，对平面和常规共形天线阵列（包括圆柱和半球形）进行了全面研究，确定了用于到达方向（DOA）估计的近似最佳共形天线阵列结构。为了对半球形结构进行建模，提出了一种改进的具有三种不同倾斜度的多面天线阵列，并将其与以前的工作进行了比较，以研究倾斜效应并获得结论性的结果。利用Cramer-Rao下界，多个信号分类和均方根误差算法来评估所有共形结构的估计精度。最后，通过比较所有共形结构的估计精度，表明在空间资源的最大角度覆盖方面，作为半球形模型的目标多面结构具有比其他共形结构更好的性能。此外，本文提出的研究方法通过涉及定向天线辐射方向图，充分检验了不同的共形天线几何结构对DOA估计性能的影响。

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