未知接收机通道特性下的信号“空间特征”估计算法

该文用均匀线阵研究了未知接收机通道特性下信号“空间特征”“w=2π△sinθ/λ)的估计问题，利用均匀线阵的冗余结构，本文给出了基于信号子空间的ESPRIT－Like算法，得到了一个信号“空间特征”和通道特性的近似解，ESPRIT－Like算法对信号“空间特征”估计具有较好的稳健性；与B.Friedlander,V.C.Soon等人（1994）提出的其它迭代算法相比，ESPRIT－Like算法具有计算量小的优点，数值仿真结果证实了本文算法的有效性并评价了算法的性能。

AN ALGORITHM FOR ESTIMATING SPATIAL SIGNATURE OF SIGNALS WITH GAINS AND PHASES OF SENSORS UNKNOWN

This paper discusses the problem of estimating the spatial signature of signals under the gains and phases of sensors unknown with a uniform linear array (ULA). It is utilized the redundant structure of the ULA and subspace-based ESPRIT-like algorithm is introduced to obtain, a closed form solution for the spatial signature of signals, and the gains and phases of sensors is presented. The major advantage of the proposed ESPRIT-like algorithm is its low computational burden compared with the other iterative methods and its robustness compared with ESPRIT algorithm. Numerical simulation is presented to test the validity and the performance of this algorithm.