相干信号源的空时三维参数分离估计方法

Space-time Three-dimension Parameter Separable Estimation Method of Coherent Signals

文中提出了一种宽频段窄带相干信号源的频率和二维波达方向估计的新方法。该方法利用L型阵列并结合一定的时域信息,将相干源的三维参数估计问题转化为3个一维问题,并在每一维使用空间平滑方法和ESPR IT算法求解相应参数,最后通过求解联立方程,获得相干信号的三维参数。因此,避免了谱峰搜索,并且算法本身的并行处理能力,提高了测向系统的实时性。计算机仿真结果表明了该算法的有效性。

Based on spatial smoothing technique and ESPRIT algorithm,a new method is presented for estimation of frequency and 2D direction of arrival of spatial coherent signal sources over a wide frequency band.Using the L-shaped array and signal temporal information,the method decomposes the problem about 3-D parameter estimation into three 1-D problems, and gets 3-D parameters of coherent sources by solving for the joint equations.Getting rid of the costly multidimensional spectrum peak search,the proposed method ...