中文摘要：

针对目前用旋转不变空间技术（ESPRIT）估计2-D DOA时存在计算量大和需要二维参数配对的问题，提出了把传播算子原理引入ESPRIT算法的新方法，用线性变换代替特征分解求取旋转不变关系矩阵，并且利用估计出的方位角估计俯仰角，大大提高了计算速度，实现了方位角和俯仰角的自动配对．阵列结构设计采用三平行线立体阵，使得阵列对任意方向入射信号都可以正确估计．计算机仿真结果表明，该方法运算速度快，精度高．

英文摘要：

A new method is presented for reducing the computational load and removing mismatch between the azimuth and elevation angle existing in estimation of subspace rotational in variance technology（ESPRIT） algorithm. Instead of eigen-decomposition, the propagator method is applied to generate rotational invariance matrix, and the elevation angle estimation is derived from the estimated azimuth angle. Thus, the computational load can be decreased greatly, and parameters paired automatically. In addition, a novel three-dimensional array is designed to accurately estimate the source signal from any direction. Simulation results showed that the proposed method is characterized by fast computation speed and high precision.