Missile Exhaust Plume By Stimulated Emission Of Radiation And Ultraviolet Radiation Transmission Characteristics Of Study

In latter-day wars, missile as a kind of strongly weapon plays more and more important situation and many countries pay more attention to develop new missile warning systems. Based on the background of the weapon ministry fund item, this thesis introduced a kind of new missile warning method and some key technologies.In this paper we first analyzed stimulated emission in missile plume. Based on the exploitation of quantum effects related to stimulated emission, we selected and to analyze band transition between themselves. The mechanism of stimulated emission spontaneous amplificatory in plume and thruster parameter influence has been anatomized. We made the conclusion that it also was a good of detect stealth objects way. Then we designed a reconnaissance technical project by use this technology.To develop UV missile warning system , establish UV radiation transfer model is one of the key technologies. In this paper we elaborate discussed UV radiation mechanism and radiation character of plume, and draw the conclusion that chemiluminescence's and particles thermal emission were the major UV solar blind emission source. The influence of optical characteristics and the size distribution of aluminum particles in plume were also been discussed. Based on radiative transfer equation,a model which has high precision and compute fast has been designed. The convergence of this model has been confirmed.We discussed atmosphere transmission effect to plume radiation. For atmosphere absorb, we selected two typical gas—vapor and ozone—to analyze and achieved the relation between penetrate rate and wavelength and transmission distance. In atmosphere scatter, we discussed Mie theory and Rayleigh theory and calculated different weather influence to atmosphere penetrate rate.In order to comprehend UV atmosphere transmission farther, we made experimentation in chapter 6. The wavelength which we choice was 350nm and achieved good data according to academic calculate.This thesis offers the important referenced value to develop our own missile approach warning systems.