Particle Size Distributions and Extinction Coefficients of Aerosol Particles in Land Battlefield Environments
In land battlefield environments, aerosol particles can cause laser beams to undergo attenuation, thus deteriorating the operational performance of military laser devices. The particle size distribution (PSD) and extinction coefficient are key optical properties for assessing the attenuation charact...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/15/20/5038 |
| _version_ | 1827719961063194624 |
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| author | Lijuan Gao Huimin Chen Guang Chen Jiahao Deng |
| author_facet | Lijuan Gao Huimin Chen Guang Chen Jiahao Deng |
| author_sort | Lijuan Gao |
| collection | DOAJ |
| description | In land battlefield environments, aerosol particles can cause laser beams to undergo attenuation, thus deteriorating the operational performance of military laser devices. The particle size distribution (PSD) and extinction coefficient are key optical properties for assessing the attenuation characteristics of laser beams caused by aerosol particles. In this study, we employed the laser diffraction method to measure the PSDs of graphite smoke screen, copper powder smoke screen, iron powder smoke screen, ground dust, and soil explosion dust. We evaluated the goodness of fit of six common unimodal PSD functions and a bimodal lognormal PSD function employed for fitting these aerosol particles using the root mean square error (RMSE) and adjusted <i>R</i><sup>2</sup>, and selected the optimal PSD function to evaluate their extinction coefficients in the laser wavelength range of 0.249~12 μm. The results showed that smoke screens, ground dust, and soil explosion dust exhibited particle size ranges of 0.7~50 µm, 1~400 µm, and 1.7~800 μm, respectively. The lognormal distribution had the best goodness of fit for fitting the PSDs of these aerosol particles in the six unimodal PSD functions, followed by the gamma and Rosin–Rammler distributions. For the bimodal aerosol particles with a lower span, the bimodal lognormal PSD functions exhibited the best goodness of fit. The graphite smoke screen exhibited the highest extinction coefficient, followed by the copper and iron powder smoke screens. In contrast, the ground dust and soil explosion dust exhibited the lowest extinction coefficients, reaching their minimum values at a wavelength of approximately 8.2 μm. This study provides a basis for analyzing and improving the detection and recognition performance of lasers in land battlefield environments. |
| first_indexed | 2024-03-10T20:55:58Z |
| format | Article |
| id | doaj.art-b3ec2e8d301d4981a23f0d27025774ee |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T20:55:58Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-b3ec2e8d301d4981a23f0d27025774ee2023-11-19T17:59:59ZengMDPI AGRemote Sensing2072-42922023-10-011520503810.3390/rs15205038Particle Size Distributions and Extinction Coefficients of Aerosol Particles in Land Battlefield EnvironmentsLijuan Gao0Huimin Chen1Guang Chen2Jiahao Deng3Science and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 100081, ChinaScience and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 100081, ChinaKey Laboratory of Traffic Safety on Track, Central South University, Changsha 410083, ChinaScience and Technology on Electromechanical Dynamic Control Laboratory, Beijing Institute of Technology, Beijing 100081, ChinaIn land battlefield environments, aerosol particles can cause laser beams to undergo attenuation, thus deteriorating the operational performance of military laser devices. The particle size distribution (PSD) and extinction coefficient are key optical properties for assessing the attenuation characteristics of laser beams caused by aerosol particles. In this study, we employed the laser diffraction method to measure the PSDs of graphite smoke screen, copper powder smoke screen, iron powder smoke screen, ground dust, and soil explosion dust. We evaluated the goodness of fit of six common unimodal PSD functions and a bimodal lognormal PSD function employed for fitting these aerosol particles using the root mean square error (RMSE) and adjusted <i>R</i><sup>2</sup>, and selected the optimal PSD function to evaluate their extinction coefficients in the laser wavelength range of 0.249~12 μm. The results showed that smoke screens, ground dust, and soil explosion dust exhibited particle size ranges of 0.7~50 µm, 1~400 µm, and 1.7~800 μm, respectively. The lognormal distribution had the best goodness of fit for fitting the PSDs of these aerosol particles in the six unimodal PSD functions, followed by the gamma and Rosin–Rammler distributions. For the bimodal aerosol particles with a lower span, the bimodal lognormal PSD functions exhibited the best goodness of fit. The graphite smoke screen exhibited the highest extinction coefficient, followed by the copper and iron powder smoke screens. In contrast, the ground dust and soil explosion dust exhibited the lowest extinction coefficients, reaching their minimum values at a wavelength of approximately 8.2 μm. This study provides a basis for analyzing and improving the detection and recognition performance of lasers in land battlefield environments.https://www.mdpi.com/2072-4292/15/20/5038aerosol particleparticle size distribution (PSD)extinction coefficientsmoke screendustadjusted <i>R</i><sup>2</sup> |
| spellingShingle | Lijuan Gao Huimin Chen Guang Chen Jiahao Deng Particle Size Distributions and Extinction Coefficients of Aerosol Particles in Land Battlefield Environments Remote Sensing aerosol particle particle size distribution (PSD) extinction coefficient smoke screen dust adjusted <i>R</i><sup>2</sup> |
| title | Particle Size Distributions and Extinction Coefficients of Aerosol Particles in Land Battlefield Environments |
| title_full | Particle Size Distributions and Extinction Coefficients of Aerosol Particles in Land Battlefield Environments |
| title_fullStr | Particle Size Distributions and Extinction Coefficients of Aerosol Particles in Land Battlefield Environments |
| title_full_unstemmed | Particle Size Distributions and Extinction Coefficients of Aerosol Particles in Land Battlefield Environments |
| title_short | Particle Size Distributions and Extinction Coefficients of Aerosol Particles in Land Battlefield Environments |
| title_sort | particle size distributions and extinction coefficients of aerosol particles in land battlefield environments |
| topic | aerosol particle particle size distribution (PSD) extinction coefficient smoke screen dust adjusted <i>R</i><sup>2</sup> |
| url | https://www.mdpi.com/2072-4292/15/20/5038 |
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