椭圆阵比圆阵复杂,但易于工程中的应用,文中利用平面均匀圆阵与平面均匀椭圆阵的等效关系,采用相模激励技术,将波束空间的旋转不变波达角估计法(ESPRIT算法)从圆阵应用场合拓展到椭圆阵中,对均匀椭圆阵的EA-ESPR IT算法进行了仿真分析,对平面均匀圆阵与平面均匀椭圆阵的DOA估计进行了对比分析。结果表明,给出的算法应用在椭圆阵中有在圆阵中几乎相同的性能,较好地解决了椭圆型阵列的波达角估计问题。

Elliptical array is more complex than circular array,but it is easy to use.In this paper beam-space ESPRIT(Estimating Signal Parameter via Rotational Invariance Techniques) is applied to elliptical array by transforming elliptical array into circular array by means of phase mode excitation,so as to solve the problem of DOA estimation based on elliptical array.The EA-ESPRIT is analyzed by computer,the simulation results showed that the algorithm used for elliptical array in this paper can obtain high performance as in circular array.

TN820