| 基于改进DBO算法的红外发射率求解 |
| 投稿时间：2024-12-17 修订日期：2024-12-26 点此下载全文 |
| 引用本文：傅莉,陈广明,孙旭,席剑辉.基于改进DBO算法的红外发射率求解[J].红外,2025,46(4):33~41 |
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| 基金项目:电磁信息控制与效应全国重点实验室开放基金项目(20230201) |
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| 中文摘要:针对应用反射法的发射率求解问题，提出一种基于双向反射分布函数(Bidirectional Reflectance Distribution Function, BRDF)的发射率间接求解方法。设计出反射亮度测量系统，采用MR170型辐射计测量多个角度下的壁面反射亮度数据，并利用门控循环单元(Gated Recurrent Unit, GRU)网络对3~5 μm和8~14 μm波段的反射亮度数据进行回归处理以排除大气吸收干扰。为准确反演出BRDF模型参数，在蜣螂优化(Dung Beetle Optimization, DBO)算法的基础上，通过加入混沌映射初始化、柯西变异和可变螺旋搜索三种策略对算法进行改进。计算不同角度下的BRDF值后，利用改进算法反演五参数函数模型的参数值，进而获得整个空间范围内的红外辐射分布。与其他算法相比，改进算法的收敛速度具有较大的提升，最终求解的发射率为0.4236，与理论测试样品之间的相对误差为11.75%。该研究可为间接求解发射率问题提供参考。 |
| 中文关键词:双向反射分布函数 蜣螂优化算法 红外发射率 红外辐射亮度 |
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| Solution of Infrared Emissivity Based on Improved DBO Algorithm |
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| Abstract:Aiming at the problem of emissivity solution using the reflection method, an indirect solution method of emissivity based on bidirectional reflectance distribution function (BRDF) is proposed. A reflection brightness measurement system is designed, and the wall reflection brightness data at multiple angles are measured by the MR170 radiometer. The reflection brightness data in the 3－5 μm and 8－14 μm bands are regressed by the gated recurrent unit (GRU) network to eliminate the interference of atmospheric absorption. In order to accurately invert the BRDF model parameters, the algorithm is improved by adding three strategies: chaotic mapping initialization, Cauchy mutation and variable spiral search on the basis of the dung beetle optimization (DBO) algorithm. After calculating the BRDF values at different angles, the parameter values of the five-parameter function model are inverted by the improved algorithm, and then the infrared radiation distribution in the entire space is obtained. Compared with other algorithms, the convergence speed of the improved algorithm is greatly improved, the final emissivity is 0.4236, and the relative error between the theoretical test sample and the algorithm is 11.75%. This study can provide a reference for indirectly solving the emissivity problem. |
| keywords:bidirectional reflectance distribution function dung beetle optimization algorithm infrared emissivity infrared radiation brightness |
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