摘要
提出了一种基于单个矢量水听器的二维波达方向估计方法 ,该矢量水听器由三个空间轴向垂直的振速水听器和一个声压水听器构成 .利用时延数据 ,以时间变元为旋转因子 ,构造了两个具有相同阵形的子阵 ,采用 ESPRIT实现了对目标信号的波达方向估计 .具有较好的估计精度 ,能实现方向余弦的自动配对 ,不造成波达方向的模糊性 .计算机仿真实验结果证明了该方法的有效性 .
A new direction of arrival estimation method is proposed using a single vector hydrophone,which is composed of three spatially co-located but orthogonally oriented velocity hydrophone plus another co-located pressure hydrophone. By using temporally invariance, constructing two sub-arrays with same array shape, direction of arrival estimation can be obtained using ESPRIT technique. It has excellent estimation precision, pairs automatically the x-axis direction cosines with the y-axis direction cosines and suffers no DOA ambiguity. The Monte-Carlo simulation results show its validity.
出处
《武汉理工大学学报（交通科学与工程版）》
2005年第1期97-100,共4页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国防重点实验室基金项目资助 (批准号 :5 14 44 0 60 10 1JB110 8)
