Research On The Simulation And Evaluation Of Infrared Smoke Interference Effects

The simulation and evaluation methods of the infrared smoke interference effects, as well as the factors that affect the interference effects, are dealt with in this paper. The work done in the paper will theoretically guide the practical development of the infrared smoke weapons.The basic principles of the interference effects of smoke on the infrared image system are analyzed, and the simulation and evaluation of the interference effect of the infrared smoke are done based on the numerical method and the random simulation method. The main scope of this paper is consisted of three parts. Firstly, the extinction model the infrared smoke is established. The numerical methods to calculate the transmissivity of the infrared spectrum with the existence of the infrared smoke is proposed, factors that impact the interference effects, such as the concentration and the thickness of the infrared smoke are discussed quantitatively according to the simulation curves, and the interference effects of the infrared smoke are shown with simulated images. Secondly, a novel simulation and evaluation method based on the modulation transfer function (MTF) is proposed in this paper. The corresponding mathematic model is established. Based on the simulation curves, the factors that impact the interference effects are analyzed and compared to those of the extinction model. Then simulation images based on the MTF model are generated. Thirdly, the Monte Carlo method is introduced, and simulation of the interference effects of the infrared smoke is realized from the viewpoint of random simulation and statistical test. The algorithm, as well as the simulated images is given in detail.