Direction finder infrared systems

Abstract

The review of direction-finding IR-systems of circular view is given. The main problems arising in the design of this type of systems are described. The purpose of the article is to analyze the possibility of using wide-angle infrared lenses for object direction finding. The principles of constructing a wide-angle direction-finding module are determined. The results of calculating the detection range of objects by the Johnson criterion for lenses with different angular fields are presented. Fundamental circuit solutions of an IR lens with an angular field of up to 150° have been found. Ways are founded on creating an objective on its basis for connecting with a cooled IR-detector spectral range of 3-5 μm. The prospects of using optical methods for changing fields of vision for solving direction-finding problems are shown.