基于波束形成的目标空间特征提取

摘要

Itisverydifficultforunderwatertargetrecognitionbecauseoftheoceanenvironment complexity. The present recognition technologies are mostly used on time domain, frequency domain, and time-frequency domain. Beam forming technology is a very important method in research of target recognition,and develop in recent years. Based on underwater echo signal, the paper use beamforming technology and spatial spectrum analysis technology to capture target echo high light spot and dimension feature in time-space domain. On the other hand,the experiment data also verify feasibility of the method of beam forming.%由于海洋环境的复杂性，给水下目标识别带来很大难度。目前的识别技术主要在时域、频域及时频域。波束形成技术是近年发展起来的研究目标识别的一种重要方法。本文基于水中目标回波信号，应用波束形成及空间谱分析技术，从时空间域获得目标回波的亮点、尺度特征，并利用实测数据验证方法的可行性。