用信号方向向量估计到达波方向

DOAs Estimation from the Signal Direction Vectors

由信号方向向量直接估计到达波方向(DOA)可以获得优良的估计性能。本文将ESPRIT技术与信号子空间技术相结合,给出了信号方向向量的完整表达式。模拟实验表明,在低信噪比和短数据的情况下,由该表达式估计DOA可以获得明显优于MUSIC方法的性能。

It is known that a good performance can be obtained when the DOAs are estimated directly from the signal direction vectors. Based on the combination of the ESPRIT with the signal subspace technique, a complete expression for the signal direction vectors is derived in this paper.. Simulations show that the new algorithm has significant improvement compared to MUSIC when the number of samples is small and SNR is low.