|Table of Contents|

Infrared Heat Radiation Detection Performance Influence of Screen Thickness and Atmosphere on Projectiles

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2011年03期
Page:
298-303
Research Field:
Publishing date:

Info

Title:
Infrared Heat Radiation Detection Performance Influence of Screen Thickness and Atmosphere on Projectiles
Author(s):
LI Han-shanLU Li-pingLEI Zhi-yong
School of Electronic Information Engineering,Xi ’ an Technological University,Xi ’ an 710032,China
Keywords:
screen thickness atmospheric attenuation projectiles infrared radiation optic-electric detection targets
PACS:
TJ410.33
DOI:
-
Abstract:
To improve the detection performance of an optic-electric detection target,the energy of the projectile infrared heat radiation in screen gained by the optic-electric detector is studied.The relations of screen thickness,projectile length,projectile radiation areas and atmospheric attenuation between the infrared heat radiation performances of projectiles in screen are analyzed.The calculation equation of the projectile infrared heat radiation is established by parting the surface areas of projectiles to many small units.The calculation method of the projectile infrared heat radiation flux of the optic-electric detector is studied.According to the theory of the atmospheric attenuation of the infrared heat radiation,the relation between the projectile infrared heat radiation energies gained by optic-electric detectors with different wavelengths and atmospheric transmittances is analyzed,and the infrared heat radiation energies that the optic-electric detector gains under different screen thicknesses and detection distances are calculated.The results show: the projectile infrared heat radiation acting on the screen is proportional to the gained radiation of optic-electric detectors with the same detection distance;the output signal that the optic-electric detector gains is the strongest when the length of projectiles is equal to the screen thickness;the detection sensitivity decreases with the increase of the distance because of the decrease of the infrared transmittance;the projectile infrared heat radiation is the best when the detector wavelength is 3 ~5 μm.

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Last Update: 2012-06-30