Wave equation-based multiple wave layered forward modeling method, device and equipment

The invention discloses a wave equation-based multiple layering forward modeling method, device and equipment. The method comprises the following steps: constructing an initial forward modeling geologic model; any stratum in the initial forward modeling geologic model is selected as a target layer, all stratums below the target layer are filled as constants, and a first forward modeling model is generated; filling all stratums below the previous stratum of the target layer in the initial forward modeling geologic model into constants, and generating a second forward modeling model; performing forward modeling calculation on the first forward modeling model and the second forward modeling model based on a wave equation to obtain a first forward modeling shot gather and a second forward modeling shot gather; processing the first forward shot gather and the second forward shot gather by adopting an adaptive subtraction algorithm to obtain a target shot gather; and performing offset processing on the target shot