中文摘要：

针对柱面共形阵列天线的DOA估计问题,充分利用柱面载体的单曲率特性,通过合理的阵元设置,基于子空间原理,提出了盲极化2DDOA估计算法。首先,利用一条母线上的阵元构成子阵1,基于ESPRIT算法,实现信源俯仰角估计。然后,利用剩余阵元构成子阵2,结合子空间原理以及俯仰角估计值,通过一维参数搜索完成方位角估计,并实现了俯仰角与方位角的自动配对。该算法在不需要信源极化状态与阵元方向图任何信息的情况下进行二维来波方向估计,估计精度高、分辨力强。同时,所提算法不需要额外的参数配对,简化了估计方法的步骤,计算量小,易于实现。在不同信噪比、快拍数条件下的计算机Monte-Carlo仿真实验表明,所提算法可有效地解决共形阵DOA估计问题。

英文摘要：

A blind 2D DOA estimation algorithm for cylindrical conformal array antenna with respect to po- larization is proposed by utilizing the characteristics of the singly curved surface of cylindrical carrier based on typical space DOA estimation theory. The algorithm is used to estimate direction of source exactly without knowing the source polarization and the element pattern. Meanwhile, the method can simplify the estimation without parameters pairing. The new algorithm can be implemented just by using a one--dimensional search and solution of equation. The first simulation estimates the performance of pitch and azimuth angle in the case of different SNR and the same snapshots by using Monte-Carlo statistical experiment. The second simulation utilizes the pattern of list to reveal the estimation result of pitch angle, and compares the influence on the estimation of azimuth angle by equation （32） and （33） algorithm in the case of the same SNR and different snapshots. The two simulations demonstrate that the effectiveness of the proposed method is verified.