摘要: Infrared signature models covering the 3.5 to 5-micrometer spectral region have been developed for events likely to produce false alarms in airborne IR warning receivers defending against SAM and AAM threats. The models can be use... 展开 Infrared signature models covering the 3.5 to 5-micrometer spectral region have been developed for events likely to produce false alarms in airborne IR warning receivers defending against SAM and AAM threats. The models can be used to predict the spectral radiation of clouds, ocean sunglitter, uniform specular sunglints, hot gas effluents representing industrial emissions and threat plumes, and the apparent spectral intensities of hot graybody sources. The spectral resolution is limited by the radiative transfer codes utilized (LOWTRAN 4 and ATLES) except in the blue spike region (2380-2400 reciprocal centimeters), for which a new pseudo line-by-line procedure was developed yielding fully-resolved spectra. All of the models have been successfully validated against measurements and/or results of more elaborate theoretical calculation. Included in this report are new AFGL and EPA spectral data on clouds, sunglints and industrial emissions. (Author) 收起