Infrared sensing/Related Articles

Parent topics

Infrared light [r]: In physics and engineering, a non-visible portion of the electromagnetic spectrum ranging from wavelengths of 750 nm to 1 mm, between the darkest visible red and the shortest submillimeter wave radar ^[e]
Heat [r]: A form of energy that flows spontaneously from hotter to colder bodies that are in thermal contact. ^[e]
Remote sensing [r]: Add brief definition or description
Spectrometry [r]: Spectroscopy is the study of interaction of electromagnetic radiation with matter in those cases where the interaction causes transitions between the allowed states of matter. Spectrometry is the quantitative measurement of spectroscopic signal amplitudes. Light scattering also involves interaction of electromagnetic radiation with matter, however, in light scattering the energy of the electromagnetic field is NOT absorbed by matter (it is scattered). ^[e]

Forward-looking infrared [r]: Add brief definition or description
Thermal imaging [r]: Electro-optical techniques, operating in the infrared spectra, which form human-recognizable images; distinguished from infrared spectrometry that measures infrared energy on a point-by-point basis in the field of view but does not form an image ^[e]
Infrared guidance [r]: Missile or other guidance that locks onto an infrared energy source, and adjusts its flight controls to keep the source in the center of its course ^[e]

Mercury cadmium telluride [r]: (MCT or HgCdTe) A semiconductor used for infrared light detection, which can be adjusted, in manufacturing, to cover different parts of the infrared band; operated as a thermoelectrically or liquid nitrogen cooled device ^[e]
Lead sulfide [r]: (PbS) Naturally occurring as galena, an important ore of lead, it also is used as an infrared light detector optimized for operation in the 1-3.5µm near IR band ^[e]
Lead selenide [r]: (PbSe) photoconductive infrared detectors designed for operation in the 2-6 µm wavelength range, with peak response approximately 4 to 4.7 µm ^[e]
Indium gallium arsenide [r]: (InGaAs) Semiconductor substrate for infrared light detectors in the 700nm to 1.8µm near infrared band ^[e]

Electro-optical MASINT [r]: A subdiscipline of measurement and signature intelligence (MASINT), which has similarities to but complements imagery intelligence (IMINT); it does not form images, but validates them and produces information on phenomena that emit, absorb, or reflect electromagnetic energy in the infrared, visible light, or ultraviolet spectra, where the value is knowledge of the type of energy detected ^[e]
Electro-optical tracking [r]: The use of electronics, possibly in combination with mechanical positioning systems, to aim an optical system at a source of infrared, visible, or ultraviolet light, and follow it for purposes of observation or weapons guidance ^[e]