用平行四边形阵列实现闭环形式2维角估计

Closed-form 2-D angle estimation with uniform parallelogram arrays

提出了适用于平行四边形阵列的 2维酉ESPRIT方法 ,它是一种闭环形式的高分辨算法 ,对信号源方位角和仰角估计实现自动配对。给出了两类酉变换矩阵 ,将复数域的矩阵运算转换到实数域。除了初始变换和最后维数等于信号个数的矩阵特征分解外 ,整个过程都采用高效的实值计算。最后对算法做了一阶近似渐进性能分析。仿真结果表明算法是有效的。

A kind of 2 D unitary ESPRIT method is proposed for use in conjunction with a uniform parallelogram array(UPA) It is a closed form high resolution algorithm to provide automatically paired source azimuth and elevation estimates Two kinds of Unitary transitions are proposed to transfer complex valued matrix computation to real valued matrix computation Except for the initial transition and the final eigenvalue decomposition of dimension equal to the mumber of sources,it is efficiently formulated in terms of real valued computation throughout The asymptotic performance of the algorithm is presented Simulation results are presented verifying the efficacy of the method