Analysis of infrared penetration method based on the shield with solid particles

With the improvement of missile defense system to detect, identify, track and intercept the ballistic missile warhead in the mid-course, the study of penetration method for the warhead in the mid-course is more and more important. The infrared shield with solid particles for missile to penetrate the defense system was explored. The ejecting model of solid particles with the action of gas was established and the transient concentration distributions of the gas and solid particles around the missile warhead in the mid-course were obtained respectively. The effect of infrared shield was investigated. The results show that the relatively steady infrared shield layer can be formed when solid particles eject from the spout with the action of gas, and the infrared radiation brightness of ballistic missile warhead in the mid-course is reduced effectively, so the infrared shield penetration method of solid particles with the action of gas is effective.