The SO₂ discharged by ships causes serious pollution to the atmosphere. Therefore, the International Maritime Organization has set strict requirements on the sulfur content of marine fuel. For the first time, this study investigates the optimal detection wavelength based on the imaging technology to realize an accurate monitoring of the SO₂ concentration in ship exhaust. First, a simulation analysis model of the optimal imaging detection (SAMID) wavelength of the SO₂ concentration in ship exhaust is proposed and analyzed in this study. Next, a bench experiment is designed. The values and the range of the gas concentration values required for the simulation are obtained. Finally, based on the principle of minimum error, the optimal detection wavelengths of the single- and the dual-wavelength imaging detection technologies are determined as 287 nm and 297 nm and 298 nm, respectively. During the SO₂ concentration retrieval, the minimum values of the root mean squared error, the mean absolute error, and the mean absolute percentage error of the single- and the dual-wavelengths are 563.14 molecules/cm³, 445.11 molecules/cm³, and 347.22% and 0.62 molecules/cm³, 0.49 molecules/cm³, and 0.85%, respectively. The simulation analysis results provide a theoretical basis for the future hardware development of an optical remote sensing system based on the imaging detection technology.

中文翻译：

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船舶尾气中SO2浓度最佳成像检测波长的仿真分析

船舶排放的SO ₂对大气造成严重污染。因此，国际海事组织对船用燃料的硫含量提出了严格要求。本研究首次基于成像技术研究最佳检测波长，以实现对船舶废气中SO ₂浓度的精确监控。首先，建立SO ₂的最佳成像检测（SAMID）波长的仿真分析模型提出并分析了船舶废气中的浓度。接下来，设计了一个实验台。获得了模拟所需的气体浓度值的值和范围。最后，根据最小误差原理，确定单波长和双波长成像检测技术的最佳检测波长分别为287 nm和297 nm和298 nm。在SO ₂浓度检索，根均方误差的最小值，平均绝对误差，以及单和双波长的平均绝对误差百分比是563.14分子/ cm ³，445.11分子/ cm ³，和347.22％和0.62分子/ cm ³，0.49分子/ cm ³，和0.85％。仿真分析结果为基于成像检测技术的光学遥感系统的未来硬件开发提供了理论依据。