Knowledge Resource Center for Ecological Environment in Arid Area
| 报告编号 | ADA614590 |
| Signal-to-Solar Clutter Calculations of AK-47 Muzzle Flash at Various Spectral Bandpass Near the Potassium D1/D2 Doublet. | |
| Klett, J. | |
| 英文摘要 | An analysis was performed, using MODTRAN, to determine the best filters to use for detecting the muzzle flash of an AK-47 in daylight conditions in the desert. Filters with bandwidths of 0.05, 0.1, 0.5, 1.0, 3.0, and 5.0 nanometers (nm) were analyzed to understand how the optical bandwidth affects the signal-to-solar clutter ratio. These filters were evaluated near the potassium D1 and D2 doublet emission lines that occur at 769.89 and 766.49 nm respectively that are observed where projectile propellants are used. The maximum spectral radiance, from the AK-47 muzzle flash, is 1.88 x 10-2 W/cm2 str micron, and is approximately equal to the daytime atmospheric spectral radiance. The increased emission, due to the potassium doublet lines, and decreased atmospheric transmission, due to oxygen absorption, combine to create a condition where the signal-to-solar clutter ratio is greater than 1. The 3 nm filter, has a signal-to-solar clutter ratio of 2.09 when centered at 765.37 nm and provides the best combination of both cost and signal sensitivity. |
| 英文关键词 | ATMOSPHERIC PHYSICS MUZZLE FLASH ABSORPTION BANDWIDTH COSTS DESERTS EMISSION FILTERS OPTICAL PROPERTIES OXYGEN POTASSIUM RADAR CLUTTER RADIANCE RATIOS REPRINTS SENSITIVITY SIGNALS SPECTRA THREAT EVALUATION AK-47 GUNS |
| 出版年 | 2010 |
| 语种 | 英语 |
| 国家 | United States |
| 来源学科分类 | 55A - Aeronomy ; 79A - Ammunition, Explosives, & Pyrotechnics |
| URL | http://r.cnki.net/KCMS/detail/detail.aspx?DbCode=KJBG&dbname=KJBGW&filename=5a02872331c97d1c38a79dd7 |
| 来源机构 | Non Paid ADAS |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/273712 |
| 推荐引用方式 GB/T 7714 | Klett, J.. Signal-to-Solar Clutter Calculations of AK-47 Muzzle Flash at Various Spectral Bandpass Near the Potassium D1/D2 Doublet.,2010. |
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