Estimating ultraviolet warning distance of approaching missiles based on atmosphere model

A new algorithm to estimate ultraviolet (UV) warning distance of approaching missiles is proposed. Based on atmosphere model, the proposed method uses LOWTRAN7 to calculate related atmospheric transmittance and finally converts the problem of estimating UV warning distance to that of searching optimal solution of corresponding nonlinear equation. A specific application example is also given in following text to illustrate the calculating process. Besides, in order to reduce the amount of calculation, four interpolation methods as well as comparison between them are also provided in the last part of this example. There are several factors that can affect warning distance: the angle between observing direction, missile flying direction and atmospheric transmittance. In this paper, we take into account of all of them, especially atmospheric transmittance. Many factors, such as altitude, distance, solar zenith angle and atmosphere visibility, are considered comprehensively when calculating atmospheric transmittance by LOWTRAN7. Based on practical situations, our method is of great practical significance and is relatively simple at the same time.