摘要
分析了矢量水听器阵的阵列流型和误差模型,针对矢量水听器阵列声压和振速通道存在相位误差问题,应用常规波束形成方法和MUSIC方法进行方位估计误差大。并对通道存在估计性能下降的问题,提出了一种简单的相位误差校正方法。利用阵列流型向量在信号子空间的投影,得出存在相位误差的阵列流型向量就是信号子空间的特征值为"一"的特征向量,通过与精确的阵列流型向量比较求出矢量阵的相位误差。最后,修正矢量阵的相位误差,得到准确的方位估计能力。通过计算机仿真,验证了算法的可行性和准确性。
In this paper,the array manifold and the error model of the vector hydrophone array are analyzed,the conventional beam forming（CBF） method and the MUSIC method for direction of arrival estimation（DOA） are described when phase error exists in the vector hydrophone array.To overcome this problem,a simple method is proposed.By using the projection of the array manifold in signal subspace,it is found that the array manifold with phase error is just the array manifold which eigenvalue in signal subspace is one… Compared to the correct array manifold,we can get the real phase error in the hydrophone array.The simulation results are presented to show the feasibility and validity of the algorithm proposed.
出处
《计算机仿真》
CSCD
北大核心
2010年第8期351-354,共4页
Computer Simulation
关键词
矢量水听器阵
相位误差
阵列流型
校正
Vector hydrophone array
Phase error
Array manifold
Correction
