Study on forming directivity with constant beam width in low frequency based on small sensor

• 来源期刊: 声学学报（英文版）
• 学科: 物理学
• 年，卷（期）: 2001,（1）
• 页码范围: 25-29
• 页数: 5页
• 分类号: O42
• 语种: 英文

摘要

Based on a combined sensor with the size of 10 cm, a narrow beam with a constant receiving beam width of 20 degree has been formed in low frequency from several Hz to thousands of Hz by using simple adaptive algorithm. The results of theoretical simulation,laboratory experiment and lake experiment with one-dimension and two-dimension combined sensors have been given.