SWEDE算法提高模式空间内DOA估计抗噪声能力

Use of SWEDE Algorithm to Improve the Noise Resisting Ability for Mode-space DOA Estimation

均匀测向圆阵相干信号DOA估计在模式空间内将阵列流形化为线性结构后 ,一般情况下都是先进行空间平滑去相干处理后再运用MUSIC算法进行DOA估计 ,文中运用SWEDE算法代替MUSIC算法进行了模式空间内的DOA估计 ,仿真结果证明SWEDE算法更好地适应了均匀圆阵模式空间内DOA估计数据矩阵的特点 ,使系统抗噪声能力、测向精度。

MUSIC algorithm is often used for DOA estimation of coherent signals after transform of mode space and spatial smoothing for uniform circular array. In this paper the SWEDE algorithm which is mainly used for tracking moving sources is used to replace the MUSIC algorithm. Simulation results show that SWEDE algorithm improves the noise resisting ability and the resolution of DOA estimation is increased.