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由于共形载体曲率的影响,共形阵列天线的阵列流形具有多极化特性。为了利用共形天线阵列流形的多极化特性,提升阵列对空间目标参数的估计性能,将天线单元的极化参数引入到导向矢量建模中,更加完整地论述了共形天线阵列流形的特点。在此基础上,建立了优化设计天线单元极化形式的目标函数,基于交替优化思想,给出了共形阵列中各天线单元最优极化形式的设计方法。以锥面共形阵列天线为例的计算机仿真实验表明,在给定阵列几何结构的前提下,通过优化天线单元的极化形式,可以有效提高阵列对空间信源方位参数估计的理论性能。
Due to the influence of the conformal carrier curvature, the array manifold of the conformal array antenna has multi-polarization characteristics. In order to make use of the multi-polarization characteristics of a conformal antenna array manifold and improve the estimation performance of the array on the spatial target parameters, the polarization parameters of the antenna elements are introduced into the steering vector modeling, and the conformal antenna array manifold specialty. On the basis of this, the objective function of the optimized polarization mode of the antenna element is established. Based on the idea of alternating optimization, the design method for the optimal polarization of each antenna element in the conformal array is given. The computer simulation of cone-shaped conformal array antenna, for example, shows that the theoretical performance of the array in space source azimuth parameter estimation can be effectively improved by optimizing the polarization form of the antenna element given the geometry of the array.