水下声接收基阵多波束形成的实验研究

Experimental Research of Multi-beam Forming of an Underwater Acoustic Array

波束形成系统是声纳的核心部件之一, 是声纳具有良好的战术技术性能的基础。波束形成中的一个重要问题是波束图的优化设计。在实际应用中, 采用理想阵列流形设计波束往往会引起实际波束的性能下降。本文结合实际水下声接收系统, 深入研究了声纳基阵的多波束优化设计问题。文中由测量数据得到实测阵列流形, 进而利用此实测阵列流形进行波束图的优化设计。仿真结果表明了这种方法的有效性。

Beamforming plays an important role and influences the whole performance in sonar systems. One of the important problems in beamforming is beampattern optimization. In practical engineering, using ideal steering vectors to design beams will cause performance degradation of real beams. In this paper, the problem of multi-beam forming of sonar systems is studied associated with a practical underwater acoustic array. Real steering vectors are obtained by a transformation of measured data. Then the weights of the array are found using real steering vectors. Computer simulations verify the effectiveness of the method presented in this paper.