Sound ray tracing calculation method in discrete corner tangential velocity field

The invention discloses a sound ray tracing calculation method in a discrete corner tangential velocity field. According to the method, a geometrical acoustics is used as a theory base, according to a Snell principle in a moving medium, a transmission route and time of the sound rays in the discrete corner tangential velocity field can be solved by utilizing a triangular forward unfolding method and a target shooting method. According to the algorithm, the velocity vector of each related point in the discrete velocity field is obtained by utilizing linear interpolation, and a sound ray at an initial incidence angle is obtained by solving an incidence angle and an emitting angle of the sound wave transmission in each small triangle in the velocity field on the basis of the triangle forward unfolding method. By adopting the algorithm, the influence of the corner tangential velocity field on the transmission of the sound rays can be disclosed, and a theoretical foundation can be provided for the compensation of acoustic temperature measurement and velocity measurement.