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天基红外成像预警大多属于点目标探测,如何在复杂背景及随机点噪声条件下实现点目标的有效探测和跟踪是天基红外预警技术重点研究内容。研究了新型前置栅网滤波热成像理论,分析了基于前置栅网滤波形成特定衍射斑对天基红外成像点目标探测的影响,利用Matlab对栅网的滤波效果进行了模拟仿真,所得仿真图像与实验图像的衍射强度分布具有较好的一致性;并在相同点目标能量条件下,对点目标及其前置栅网滤波衍射图案进行了人眼视觉探测实验,初步分析表明了其对于点目标探测和跟踪的有效性,为进一步研究和发展高性能的天基红外成像技术提供了一种新途径。
Most of the space-based infrared imaging warnings belong to point-target detection. How to effectively detect and track point targets under complex background and random-point noise is the key research content of space-based infrared warning technology. This paper studies the theory of the new pre-grid filtering thermal imaging, analyzes the influence of the pre-grid filtering on the target detection of the space-based infrared imaging point, and uses Matlab to simulate the filtering effect of the grid. The simulation The diffraction intensity distribution of the image and the experimental image is in good agreement. Under the condition of the same target energy, the human eye visual detection experiment is carried out on the target and its pre-grating diffraction pattern. The preliminary analysis shows that, The effectiveness of point-target detection and tracking provides a new way to further research and develop high-performance space-based infrared imaging technology.