Research on the Simulation Method of the Drift Trajectory of Persons Overboard Under the Sea Search Mode of Unmanned Surface Vehicle (USV)

It is necessary to estimate the possible drift direction and location of a wrecked target based on the available time, marine environment and meteorology of the incident area before a maritime search and rescue activity is conducted. In this paper, the research object of the study is the wrecked target of a man overboard. With Monte Carlo stochastic particle method, persons overboard are abstracted as simulation particles, and the motion of these particles is set to be independent of each other and have the drift characteristics of persons overboard. The drift velocity model is used to calculate the trajectory and position distribution of the particles after a period of time to obtain the area to be searched, which provides a basis for the Unmanned Surface Vehicle with the most likely location of the man overboard.