The fundamental design of dual-band imaging system

The basic technologies of designing dual-band imaging system(3-5 mu m,8-14 mu m) can be researched in this paper. We study the ratio of the dual-band radiating energy in the different regions of temperature. The relation between S/N ratio and NETD of a dual-band imaging system is discussed and compared with a single band in detail. The S/N and NETD of a dual-band imaging system is 5 times over that of a single imaging system. By calculating and analyzing the imaging characteristic and the dual-band(3-5 mu m,8-14 mu m) detectors with the same focus plane and size,the fusion technology in level of pixel is obtained and realized using main-self fusion structure,which the processing and complexity of a dual-band can be reduced.