Beam-forming and Imaging Using Acoustic Lenses:Some Simulation and EXDerimental Results

摘要：

The acoustic lens sonar uses lenses instead of electronic circuitry in conventional sonar for beamforming, so that the electronics complexity and power consumption can be much reduced. Two acoustic lenses are designed in this paper by using the hybrid geometric/wave acoustic modeL One is made from the material PMMA(polymethyt methacrylate) and the other is from the material PMP (polymethylpentene). In order to verify the performances of the designed acoustic lenses beam patterns, a set of experiments with different objects have been performed in water tanks. The focal position and beam patterns measured in experiments are in accordance with simulation. Therefore, the hybrid geometric/wave acoustic model is proved right and effective to predict the performances of acoustic lenses before fabrication. Besides, images of different objects are also given. According to experimental results, PMMA can be used to design lens for easiness of manufacturing and low sound attenuation.

关键词： Acoustic lenses SimuLation Experimental results

作者: Ju Wu Hongyu Bian

作者单位: National Laboratory of Underwater Acoustic Technology Harbin Engineering University Harbin Heilongjiang Province, China

会议类型: 国际会议

会议名称: 2010 2nd International Conference on Signal Processing System(2010年信号处理系统国际会议 ICSPS 2010)

会议地点: 大连

会议语种:英文

页码: 1604-1608

在线出版日期: 2010-07-05（万方平台首次上网日期，不代表论文的发表时间）