Meteorologiske forholds innvirkning på detekterbarheten av landmål med luftbåren IR-sensor

Abstract

A model has been developed for calculating detection ranges of ground targets by airborne thermal sensors. The model includes the effects of meteorological conditions on target and background temperatures as well as on atmospheric transmittance. In the report the theoretical foundations for the model are briefly discussed, and a short description of the model itself is given. The model is used for studying how meteorological conditions influence the detection of ground targets by airborne thermal sensors. Simulations are based on real meteorological data from Rygge for the periods of June 2001 and February 2002. Results indicate that most of the time the detection range will be limited by the field of view and resolution of the sensor systems. Only in periods of reduced visibility or cross-over between target and background temperatures will the detection range be significantly lower.