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

作　　者：HUI Junying,LIU Hong,YU Huabing,LIANG Guolong (Underwater Acoustic Enyineering Dept. Harbin Engineering University Harbin 150001) 

出　　处：《Chinese Journal of Acoustics》2001年第1期25-29,共5页声学学报（英文版）

基　　金：This Work was supported by the National Excellent Doctoral Dissertation Author Foundation of China under Grant No. 199939.

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.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.

关 键 词：underwater NARROW sized SONAR detecting DIPOLE DISTINGUISH favorable rotating CIRCLES 

分 类 号：O427[理学—声学]