高温弥散介质六维光场强度获取及光热信息重建方法研究

High temperature disperse media widely exist in the areas of energy and power, metallurgy and chemical industry, aeronautics and astronautics etc. The photothermal information (temperature field, radiative intensity field, etc.) takes a crucial role in product quality control, pollutants generation and emission, hazards early warning, and equipment life assessment. To achieve the goal of the photothermal information reconstruction for high temperature disperse media, it usually needs to use the numerical inversion method by measuring the external photothermal signal. However, the present light-field intensity access technology and inversion algorithm remain to be a breakthrough. This study aims to develop a six-dimensional light-field intensity acquisition and photothermal information reconstruction technique for high temperature disperse media. The project mainly includes the following research aspects: Experimental research on the spectral radiation characteristics of high temperature disperse media. Establish the light-field imaging model for radiation participatory media. By using single camera to achieve high accuracy, high resolution six-dimensional light-field intensity for high temperature disperse media. Simulate the light-field intensity distribution, which highly matches the experimental conditions. Analyze the sensitivities field distribution of light-field intensity. Develop a combined stochastic and deterministic inversion algorithm to achieve an efficient and stable photothermal information reconstruction for high temperature disperse media. This project will provide an important theoretical foundation and support for optical imaging, combustion diagnostics, target recognition, nondestructive testing and other application areas.

高温弥散介质广泛存在于能源动力、冶金化工、航空航天等领域中，其光热信息（温度场、辐射强度场等）对产品的质量控制、污染物生成排放、状态的危险预警以及设备的寿命评估等有至关重要的作用。高温弥散介质光热信息重建需要通过测量外部的光热信号，利用数值反演的方法来实现，然而目前高精度、高分辨的光场强度获取技术和高效稳定的反演算法有待突破。本项目拟开展高温弥散介质六维光场强度获取及光热信息重建方法的研究，主要包括：实验研究高温弥散介质的光谱辐射特性，建立辐射参与性介质的光场成像模型，利用单相机实现高精度高分辨的六维光场强度的获取；模拟与实验条件高度匹配的光场强度分布，分析光场强度的灵敏场分布，发展一种确定性方法和随机性方法联合的反演算法，从而实现高温弥散介质光热信息的高效稳定重建。本项目可为光学成像、燃烧诊断、目标识别、无损检测等应用领域提供重要的基础理论支撑。

高温弥散介质广泛存在于能源动力、冶金化工、航空航天等领域中，其光热信息（温度场、辐射强度场等）对产品的质量控制、污染物生成排放、状态的危险预警以及设备的寿命评估等有至关重要的作用。高温弥散介质光热信息重建需要通过测量外部的光热信号，利用数值反演的方法来实现，然而目前高精度、高分辨的光场强度获取技术和高效稳定的反演算法有待突破。本项目拟开展高温弥散介质六维光场强度获取及光热信息重建方法的研究，主要包括：实验研究高温弥散介质的光谱辐射特性，建立辐射参与性介质的光场成像模型，利用单相机实现高精度高分辨的六维光场强度的获取；模拟与实验条件高度匹配的光场强度分布，分析光场强度的灵敏场分布，发展一种确定性方法和随机性方法联合的反演算法，从而实现高温弥散介质光热信息的高效稳定重建。本项目可为光学成像、燃烧诊断、目标识别、无损检测等应用领域提供重要的基础理论支撑。主要成果包括发表刊物论文14篇,其中SCI检索6篇，EI收录8篇，申报发明专利7项。培养博士研究生1人（已毕业）、硕士研究生3人（已毕业）。