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为了研究自然环境因素对热成像系统综合性能的影响,在MRTD信道宽度热成像系统综合性能评价模型基础上,比对TTP模型,引入自然背景噪声因子,构建了基于自然背景的热成像系统综合性能信息量评价模型,通过实验给出了自然背景噪声因子的确定方法,并建立了模型的归一化形式。以典型场景为例,通过实验分析了不同自然背景对热成像系统目标信息量获取的影响,并与TTP模型的分析结果进行比较,二者具有较好的一致性。实验表明基于自然背景的热成像系统综合性能信息量评价模型能够较好地反映自然背景复杂度对系统综合性能的影响,可以应用于系统性能评价。
In order to study the influence of natural environment on the comprehensive performance of thermal imaging system, based on the comprehensive performance evaluation model of MRTD channel width thermal imaging system, the natural background noise factor is introduced compared with TTP model, and the comprehensive performance of thermal imaging system based on natural background Information evaluation model, the method of determining the natural background noise factor is given through experiments, and the normalized form of the model is established. Taking a typical scene as an example, the effect of different natural backgrounds on the acquisition of target information of thermal imaging system is analyzed experimentally, and compared with the results of TTP model analysis, the two have good consistency. Experiments show that the comprehensive performance information evaluation model of thermal imaging system based on natural background can better reflect the impact of natural background complexity on system performance and can be applied to system performance evaluation.