Recent years have seen a growth in the use and development of passive infrared sensors. These are desirable in two ways. Firstly the weapon delivery system can leave the immediate area or take cover when fired, as the missile will not require any further commands from the launcher. Secondly as the missiles home in on radiation produced by virtue of the targets physical temperature, it is harder to decoy the missile or camouflage the target to prevent it radiating. All objects will emit some energy in the infrared bands and depending on the type of target and temperature either the 3-5 micrometers or 8-12 micrometers band will usually be used. It is at these wavebands that the atmosphere has two distinct windows. These wavebands and especially the longer waveband will give the missile some capability in bad weather and fog. This paper will out line some aspects important in designing a passive infrared missile from the optical view point. The definition of the infrared missile used here encompasses the imaging system upto the detector encapsulation.
Design requirements for a passive infrared homing head
Anforderungen an einen passiven Infrarot-Zielsuchkopf
1983
3 Seiten
Conference paper
English
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