作　　者： ; ; ;

机构地区： 华南理工大学电子与信息学院

出　　处： 《华南理工大学学报（自然科学版）》 2004年第4期5-10,共6页

摘　　要： 在传统的快速傅立叶变换 (FFT)估计空间信号波达方向 (DOA)方法的基础上 ,针对信号集中在一定空间区域里的情况 ,设计了一种双均匀线阵及相应的DOA估计方法 .理论和仿真结果都证明了基于此双均匀线阵的DOA估计方法在解决了角度模糊问题的同时 ,与基于具相同阵元数目及半波长阵元间距的均匀线阵的常规DOA估计方法相比 ,可成倍地提高角分辨率 。 Based on the traditional direction of arrival(DOA) estimation method of spatial signals by means of FFT, a dual uniform linear array and the relevant DOA estimation method were designed for spatially confined signals. Both the deducted theory and the simulated result confirm that the proposed DOA estimation method based on the dual uniform linear array can solve the problem of angle ambiguity. At the same time, it can geminate the angle resolution and obviously decrease the computation, when compared with the general DOA estimation method based on the uniform linear array with the same antennas number and the interelement spacing of half-wavelength.

关 键 词： 阵列设计 波达方向估计 快速傅立叶变换 双均匀线阵 线性调频 变换

领　　域： [电子电信] [电子电信]