摘要
针对安装于飞机机翼上,具有不同结构极化敏感天线的部分校准阵列,该文提出了一种完全极化电磁波DOA和极化参数的迭代估计方法。该方法基于部分校准阵列,估计阵列误差;然后利用阵列误差,估计单个极化敏感天线的极化导向矢量;最后利用极化导向矢量,估计完全极化电磁波DOA和极化参数。迭代运行上述三步,可以逐步提高估计精度。计算机仿真验证了该方法是收敛的,并且具有良好的鲁棒性。
The iterated estimation of DOA and polarization for completely polarized electromagnetic waves is proposed based on an partly calibrated polarization sensitive array with different type of polarization sensitive antennas, mounted on airframe. The proposed algorithm can estimate the array＇s error based on the partly calibrated polarization. Then, the polarization steering vector of single polarization sensitive antenna is estimated by this array＇s error, so that the sources＇ DOA and polarization are estimated based on the polarization steering vector. The estimating accuracy is enhanced by means of iteration. The simulations show that the proposed algorithm has convergence and robust character.
出处
《电子与信息学报》
EI
CSCD
北大核心
2008年第8期1893-1896,共4页
Journal of Electronics & Information Technology
关键词
机载天线
极化敏感阵列
DOA和极化参数估计
阵列误差
Antennas mounted on airframe
Polarization sensitive array
DOA and polarization estimation
Array＇s error
作者简介
常文秀：女，1957年生，副教授，研究方向为阵列信号处理等．
陶建武：男，1959年生，教授，研究方向为阵列信号处理、非线性控制等．
