TY - JOUR N2 - In this study, the effect of the emergence angle of a source array on acoustic transmission in a typical shallow sea is simulated and analyzed. The formula we derived for the received signal based on the Normal Mode indicates that the signal is determined by the beamform on the modes of all sources and the samplings of all modes at the receiving depth. Two characteristics of the optimal emergence angle (OEA) are obtained and explained utilizing the aforementioned derived formula. The observed distributions of transmission loss (TL) for different sources and receivers are consistent with the obtained characteristics. The results of this study are valuable for the development and design of active sonar detection. L1 - http://www.journals.pan.pl/Content/113242/PDF/aoa.2019.129736.pdf L2 - http://www.journals.pan.pl/Content/113242 PY - 2020 IS - No 1 EP - 9 DO - 10.24425/aoa.2019.129736 KW - underwater acoustic KW - emergence angle KW - transmission loss KW - active sonar detection A1 - Lu, Yanyang A1 - Yang, Kunde A1 - Liu, Hong A1 - Huang, Chunlong PB - Polish Academy of Sciences, Institute of Fundamental Technological Research, Committee on Acoustics VL - vol. 45 DA - 2020.02.26 T1 - Effect of Emergence Angle on Acoustic Transmission in a Shallow Sea SP - 3 UR - http://www.journals.pan.pl/dlibra/publication/edition/113242 T2 - Archives of Acoustics ER -