稀疏电磁对阵列到达角和极化参数估计

发布时间：2018-06-04 02:39

  本文选题：到达角 + 极化　； 参考：《探测与控制学报》2017年05期

【摘要】：针对稀疏阵列测向中相位解模糊问题,提出了一种稀疏电磁对十字形阵列的到达角和极化参数联合估计算法,根据电偶极子和磁偶极子之间的旋转不变关系进行极化参数估计,利用虚拟基线解模糊得到信号到达角的高精度估计。该方法利用同一次特征分解的特征值和特征矢量自动配对,不需要额外的配对运算。仿真实验表明,本方法不仅克服了非均匀十字阵由于稀疏造成的相位模糊问题,而且大大提高了到达角的估计精度。
[Abstract]:In order to solve the phase ambiguity problem in the direction finding of sparse array, a joint estimation algorithm of the angle of arrival and polarization parameters of a sparse electromagnetic cross array is proposed. The polarization parameters are estimated according to the rotation invariant relation between the electric dipole and the magnetic dipole. The high precision estimation of the arrival angle of the signal is obtained by using the virtual baseline to resolve the ambiguity. In this method, the eigenvalues and vectors of the same decomposition are used to match automatically, and no additional pairing operation is required. The simulation results show that the proposed method not only overcomes the phase ambiguity problem caused by non-uniform cross arrays but also improves the precision of angle of arrival estimation.
【作者单位】： 陕西理工大学物理与电信工程学院;
【基金】：国家自然科学基金项目资助(61475094,61201295) 陕西理工大学科研计划资助项目(SLGKYQD2-06);陕西理工大学院士工作站课题基金资助(fckt201504)
【分类号】：TN911.7
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本文编号：1975479