HDR热成像系统动态范围特性测试评价方法

为了适应具有太阳、干扰弹、火光等强辐射背景下的高性能热成像应用，可适应温差达1 000~5 000 ℃以上强辐射干扰场景的HDR热成像成为国内外发展的重要方向。虽然HDR热成像系统动态范围测试系统组成与传统测试系统没有明显的差异，但目前尚没有适宜的测试方法和仪器，其核心在于缺乏大动态范围动态红外辐射源靶标。研究了一种HDR热成像系统动态范围特性测试评价方法，设计了一种新型的HDR动态红外辐射源阵列靶标，可获得温差不低于1 000 ℃的HDR动态红外辐射，实现HDR热成像系统动态范围特性的客观测试。实验结果表明:HDR动态红外辐射源阵列靶标在温度范围、稳定性、精度、调制频率等方面满足测试评价的要求，可实现快速、可靠的HDR热成像系统动态范围特性测试，对于推进HDR热成像技术研究和系统测试评价具有指导意义。

Testing and evaluation method for HDR thermal imaging system dynamic range performance

To adapt to high performance thermal imaging application in the background with strong radiation such as sun, interference bomb and fire, high dynamic range (HDR) thermal imaging with adaptability for strong radiation interference scenes of temperature difference beyond the range of 1 000-5 000 ℃, had become a significant direction of development at home and abroad. Although there was no obvious difference between the dynamic range testing system of HDR thermal imaging system and traditional thermal imaging system, there was no suitable testing method and instrument now, and its core lay in the lack of large dynamic range dynamic infrared radiation source target. This article researched a dynamic range performance testing and evaluation method of HDR thermal imaging system, and designed a novelty HDR dynamic infrared radiation sources array target with temperature difference beyond 1 000 ℃ to realize the objective testing of HDR thermal imaging system dynamic range performance. The experimental results show that HDR dynamic infrared radiation sources array target meets the testing and evaluation requirement of temperature range, stability, accuracy, modulation frequency, etc. and can realize fast and reliable the dynamic range performance testing of HDR thermal imaging system. This technology is of guiding significance to the development of HDR thermal imaging technology research and system testing and evaluation.