多星测控中波达方向估计传播因子虚拟ESPRIT算法

针对多星测控中涉及的阵列天线信号波达方向估计问题，给出了一种新的基于传播 因子的二维波达方向估计（2D-DOA）算法——传播因子虚拟ESPRIT算法（PMV-ESPRIT）。传 统的虚拟ESPR IT算法需要对互相关矩阵进行特征值分解（EVD）或对数据接收矩阵进行奇异值分解（SVD） ，因此其运算量较大。而新算法基于传播因子方向向量分割的线性运算对传统算法做了进 一步改进，其运算量明显降低，且具有更高的信号波达方向测向精度。仿真实验结果表明了 PMV-ESPRIT算法的有效性和可行性。

Propagator Method Virtual ESPRIT Algorithm for DOA Estimation in Multi-satellite TT&C

A Propagator Method V irtual ESPRIT (PMV-ESPRIT) algorithm is proposed for the 2-D direction of arriva l(2D-DOA) estimation of antenna array in the multi-satellite TT&C. The conventi onal Virtual ESPRIT algorithm requires either the eigen-value decomposition (EVD ) of the cross-correlation matrix or singular value decomposition (SVD) of the r eceived data matrix, therefore, the computational load is very heavy. However, t his new algorithm improves conventional algorithm based on PM steering vectors p arting linear operation, so it not only has a significantly lower computational c omplexity than the Virtual ESPRIT, but also is apparently more precise in the ca lcu lation result of the signal arrival direction.Simulation results verify effectiv eness and feasibility of the proposed PMV-ESPRIT algorithm.