Chu, P.; Zhang, L.; Huo, W.; Wang, K., and Chen, Y., 2020. Analysis of high-resolution underwater acoustic imaging technology in multi-subarray beam domain. In: Gong, D.; Zhang, M., and Liu, R. (eds.), Advances in Coastal Research: Engineering, Industry, Economy, and Sustainable Development. Journal of Coastal Research, Special Issue No. 106, pp. 518–521. Coconut Creek (Florida), ISSN 0749-0208.

The development of ocean resources and the research of ocean engineering are inseparable from the acquisition and mastery of underwater scene information, and the most important way to obtain this information is underwater acoustic imaging technology. This paper is divided into two parts: theoretical research and model simulation. In the theoretical research, the principle of traditional the split-beam phase detection method and the basic principle of cross-correlation detection technology of the phase center in beam domain are analyzed. Then, the signal model is established, and the conclusion that the number of subarray elements is positively correlated with the resolution of the system is obtained. Finally, the simulation model of the seabed is established to verify the algorithm of multi-subarray beam domain seabed detection and the high-resolution underwater acoustic imaging system.