Dr. Liu Xuesong, assistant professor, received the bachelor's degree in instrument science and engineering from Zhejiang University in 2010 and the Ph.D. degree in instrument science and engineering from Zhejiang University in 2015. As the main participant of the national "863" marine major project "phased array three-dimensional acoustic imaging sonar technology research", he was responsible for acoustic imaging algorithm research and signal processing system design. In the research of beamforming algorithms and sparse array, he has published 3 papers in the TOP journals, and has 9 authorized invention patents. The three-dimensional acoustic imaging sonar system has filled the gaps of this field in China, and it is an underwater real-time monitoring equipment urgently needed by China's important marine facilities and military bases for anti-frogmen and AUVs. The continuous theoretical research and system improvement work of Dr. Liu Xuesong have promoted the practical process of phased array three-dimensional acoustic imaging sonar systems. At present, the prototype of the engineering prototype has been applied for demonstration.