不同阵列流形下的二维DOA估计性能

2-D Direction of Arrival Estimation Performance under Different Array Manifolds

研究了几种不同二维阵列流形,通过一个统一的模型,仿真分析了简单的二维阵列、均匀方阵、均匀圆阵、随机方阵和半圆阵的到达方向(DOA)估计性能。从仿真结果可以得出,均匀方阵的DOA估计性能较好,均匀圆阵相位易于控制,半圆阵与圆阵的DOA估计性能差别很小,但是半圆阵减少了大量的阵元数。

This paper studies several different kinds of 2-D array manifolds, simulates and analyses the direction of arrival（DOA） estimation performances of the simple 2-D array,uniform square array,uniform circular array （UCA）,random square array and semicircular array by means of a uniform module. The simulation results shows that the uniform square array holds the merit in DOA estimation,the phase of UCA is easy to be controlled,and there is only a little difference between the circular array and the semicircular array in DOA estimation,but the semicircular array has the advantage in amount of cells.