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中波红外是非常重要的探测波段,对于目标探测而言,在保证足够光子数的情况下,进行波段选择有利于更好地区分目标与背景。针对典型目标及其所在区域的背景的中波红外光谱辐射特性,分析了信噪比和信杂比对探测的影响,提出了一种基于综合信噪比的波段选择方法,该方法综合考虑了传感器噪声、背景杂波辐射对目标探测的影响,计算了典型状态下目标信噪比、信杂比和综合信噪比,从仿真结果来看,不同典型场景下能使目标探测的综合信噪比较高的波段并不相同,从而给出不同场景下最优探测波段的建议。白天探测该目标,3~3.7μm可以考虑作为优选波段,在夜间探测该目标,3~5μm可以考虑作为优选波段。
Medium wave infrared (IR) is a very important detection band. For the purpose of target detection, band selection can help to better distinguish the target from the background while ensuring sufficient number of photons. Aiming at the radiation characteristics of typical target and the background of its region, the influence of signal-to-noise ratio and signal-to-noise ratio on the detection is analyzed. A band selection method based on integrated signal to noise ratio is proposed. The method takes the sensor Noise and background clutter radiation on target detection, the target signal-to-noise ratio, signal-to-noise ratio and integrated signal-to-noise ratio under typical conditions are calculated. From the simulation results, the comprehensive signal to noise ratio The higher bands are not the same, giving recommendations for the best detection bands in different scenarios. This target is probed during the daytime and 3 ~ 3.7μm can be considered as the preferred wavelength band. This target is detected at night and 3 ~ 5μm can be considered as the preferred wavelength band.