宽带相干源快速测向算法研究

通过对导向矢量进行分割,构造出一种可预先计算并存储的一致聚焦矩阵,避免了聚焦矩阵的实时求取。同时利用窄带传播算子方法替代MUSIC算法,进一步减少了聚焦后测向的计算量。计算机仿真结果证明算法在保证高分辨率的同时,能实现宽带相干源的快速测向。

Fast Algorithm for Direction-of-Arrival Estimation of Wide-Band Coherent Source

In this paper,by using Bessel functions the source-direction vector is separated into two components.Using the method of getting focusing matrix as MTLS,we get the focusing matrix which can be calculated and deposited previously.In this way,computing the focusing matrix in real time can be avoided.At the same time,the MUSIC algorithm is replaced by the propagator method,which can reduce computational burden further.The results of simulations demonstrate that the fast algorithm,which has super-resolution,leads to the realization of real-time bearing estimation of coherent wide-band source.