Method of passive ranging from infrared image sequence based on equivalent area

摘要

The information of range between missile and targets is important not only to missile controlL1ng component, but also to automatic target recognition, so studying the technique of passive ranging from infrared images has important theoretic and practical meanings. Here we tried to get the range between guided missile and target and help to identify targets or dodge a hit. The issue of distance between missile and target is currently a hot and difficult research content. As all know, infrared imaging detector can not range so that it restricts the functions of the guided information processing system based on infrared images. In order to break through the technical puzzle, we investigated the principle of the infrared imaging, after analysing the imaging geometric relationship between the guided missile and the target, we brought forward the method of passive ranging based on equivalent area and provided mathematical analytic formulas. VaL1dating Experiments demonstrate that the presented method has good effect, the lowest relative error can reach 10% in some circumstances.