In order to meet the needs of counter photoelectric detection and precision guidance weapons in modern air warfare, the spectral characteristics of smoke image jamming unit were tested. Based on the analysis of the factors affecting the smoke interference performance, a theoretical calculation model is established, and a feasible test method is proposed. A certain type of smoke jamming unit was tested. We obtained the smoke transmittance curveof0.4-0.76um,1.3-3um,3-5um,8-14um and MWIR and LWIR image of typical time period, which laid a foundation for the further development of smoke jamming unit with better performance.
It is a great significance to study the simulation device of missile IR characteristics for improving the performance test of photoelectric detection equipment. Based on the analysis of the IR characteristic of the thermal radiation of the missile tail flame, a mathematical model of the thermal radiation of the missile tail flame is established, which is combined with the atmospheric transmittance model. The scheme design of structure module, temperature control module is given for MWIR and LWIR respectively. Taking a certain type of missile as an example, an experimental platform was built to verify the feasibility of the method.
As a highly concerned hyperspectral image target detection field, it has important research value and application prospects both in military and civil. Starting with the working principle and system structure of spectral imager based on AOTF, the polarization information pretreatment, judgment of connected area and contour extraction are added to the classical algorithm of CEM target detection, which provides a more reliable judgment basis for target detection. Finally, the target detection experiments on spectral images of metal objects are carried out. The results show that the detection efficiency of the proposed algorithm is significantly improved, and it is more suitable for detecting targets whose spectral characteristics are not obvious.
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