Arid
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
URLhttp://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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