Method and device for evaluating ship radar scattering cross section

The invention relates to the technical field of ship radars, and discloses a method for evaluating the scattering cross section of a ship radar, and the method comprises the steps: receiving the electromagnetic beam information of a sea-sweeping incidence orientation; preprocessing the electromagnetic beam of the sea-sweeping incidence orientation based on a sea surface model to generate a coupled beam; calculating ship electromagnetic scattering energy echoes by taking the coupled wave beam as an incident wave; carrying out coupling processing on ship electromagnetic scattering energy echoes and the sea surface model to generate ship scattering energy echoes; and calculating a ship radar scattering cross section on the sea surface in the sea sweeping orientation. According to the method, the non-planar incident wave can be obtained through coupling processing according to the configuration information of the electromagnetic beam and the preset sea surface model, and then the ship radar scattering characteris