Infrared simulation method and system, computer and readable storage medium

The invention provides an infrared simulation method and system, a computer and a readable storage medium, and the method comprises the steps: inputting a target three-dimensional model into a terrain editor, and inputting corresponding scene information through a first preset script, so as to obtain solar radiation intensity and an atmospheric attenuation coefficient; calculating a solar radiation angle through a first preset script, constructing an atmospheric radiation transmission model, and calculating first surface radiation intensity of the surface of the object according to the atmospheric radiation transmission model; calculating the target radiation intensity of the object mapped to the target virtual imaging equipment through a second preset script, and carrying out graying processing on the target radiation intensity through a third preset script; and displaying gray colors corresponding to the objects in a display picture of the target virtual imaging equipment so as to complete infrared simulati