Passive SWIR airglow illuminated imaging compared with NIR- visible for low light night time observations
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Abstract
It is well known that luminance from photo-chemical reactions of hydroxyl ions in the upper atmosphere (∼85 km altitude) produces a significant amount of night time radiation in the short wave infra-red (SWIR) band with wavelength between 0.9 and 1.7 μm. By examining images in an urban and a rural setting, we investigate the correlation between the appearances of passive dark of night images in the SWIR with NIR- visible. The experimental setup consists of two sensors, a NIR-visible CCD and an InGaAs array sensitive in the SWIR, both co-located on an AZ-EL mount, and both co-boresighted so that different viewing angles of the sky and terrestrial scenes are possible. By making corrections for focal length and pixel size, the visible and SWIR data can be compared. After taking several nights of data in the urban environment of Albuquerque, NM, the entire system was then re-located to a rural location on the island of Kauai in a rural setting with very low ambient light. It is shown that under most conditions the SWIR sensor produces significantly better imagery using the airglow illumination source.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Passive SWIR airglow illuminated imaging compared with NIR- visible for low light night time observations</title><author><name sortKey="Dayton, David C" uniqKey="Dayton D">David C. Dayton</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Applied Technology Associates, 1300 Britt SE</s1><s2>Albuquerque, NM 87123</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Albuquerque, NM 87123</wicri:noRegion></affiliation></author><author><name sortKey="Allen, Jeffrey" uniqKey="Allen J">Jeffrey Allen</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Applied Technology Associates, 1300 Britt SE</s1><s2>Albuquerque, NM 87123</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Albuquerque, NM 87123</wicri:noRegion></affiliation></author><author><name sortKey="Nolasco, Rudolf" uniqKey="Nolasco R">Rudolf Nolasco</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Applied Technology Associates, 1300 Britt SE</s1><s2>Albuquerque, NM 87123</s2><s3>USA</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Albuquerque, NM 87123</wicri:noRegion></affiliation></author><author><name sortKey="Gonglewski, John D" uniqKey="Gonglewski J">John D. Gonglewski</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Air Force Research Laboratory, 3550 Aberdeen SE, Kirtland AFB</s1><s2>NM 87117</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Nouveau-Mexique</region></placeName></affiliation></author><author><name sortKey="Myers, Michael" uniqKey="Myers M">Michael Myers</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Air Force Research Laboratory, 3550 Aberdeen SE, Kirtland AFB</s1><s2>NM 87117</s2><s3>USA</s3><sZ>4 aut.</sZ><sZ>5 aut.</sZ></inist:fA14><country>États-Unis</country><placeName><region type="state">Nouveau-Mexique</region></placeName></affiliation></author><author><name sortKey="Burns, Dennis" uniqKey="Burns D">Dennis Burns</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Textron Defense Systems, 9565 Kaumualii Hwy.</s1><s2>Waimea, HI 96796</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Waimea, HI 96796</wicri:noRegion></affiliation></author><author><name sortKey="Mons, Ishan" uniqKey="Mons I">Ishan Mons</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Textron Defense Systems, 9565 Kaumualii Hwy.</s1><s2>Waimea, HI 96796</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Waimea, HI 96796</wicri:noRegion></affiliation></author><author><name sortKey="Maia, Francisco" uniqKey="Maia F">Francisco Maia</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Textron Defense Systems, 9565 Kaumualii Hwy.</s1><s2>Waimea, HI 96796</s2><s3>USA</s3><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>États-Unis</country><wicri:noRegion>Waimea, HI 96796</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">11-0425660</idno><date when="2011">2011</date><idno type="stanalyst">PASCAL 11-0425660 INIST</idno><idno type="RBID">Pascal:11-0425660</idno><idno type="wicri:Area/Main/Corpus">002875</idno><idno type="wicri:Area/Main/Repository">002804</idno></publicationStmt><seriesStmt><idno type="ISSN">0277-786X</idno><title level="j" type="abbreviated">Proc. SPIE Int. Soc. Opt. Eng.</title><title level="j" type="main">Proceedings of SPIE, the International Society for Optical Engineering</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Focal length</term><term>Gallium Arsenides</term><term>Hydroxyl</term><term>Indium Arsenides</term><term>Pixel</term><term>Ternary compounds</term><term>Thermal imaging</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Imagerie thermique</term><term>Composé ternaire</term><term>Gallium Arséniure</term><term>Indium Arséniure</term><term>Hydroxyle</term><term>Distance focale</term><term>Pixel</term><term>As Ga In</term><term>InGaAs</term><term>0130C</term><term>0757K</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">It is well known that luminance from photo-chemical reactions of hydroxyl ions in the upper atmosphere (∼85 km altitude) produces a significant amount of night time radiation in the short wave infra-red (SWIR) band with wavelength between 0.9 and 1.7 μm. By examining images in an urban and a rural setting, we investigate the correlation between the appearances of passive dark of night images in the SWIR with NIR- visible. The experimental setup consists of two sensors, a NIR-visible CCD and an InGaAs array sensitive in the SWIR, both co-located on an AZ-EL mount, and both co-boresighted so that different viewing angles of the sky and terrestrial scenes are possible. By making corrections for focal length and pixel size, the visible and SWIR data can be compared. After taking several nights of data in the urban environment of Albuquerque, NM, the entire system was then re-located to a rural location on the island of Kauai in a rural setting with very low ambient light. It is shown that under most conditions the SWIR sensor produces significantly better imagery using the airglow illumination source.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0277-786X</s0></fA01><fA02 i1="01"><s0>PSISDG</s0></fA02><fA03 i2="1"><s0>Proc. SPIE Int. Soc. Opt. 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All rights reserved.</s1></fA44><fA45><s0>7 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>11-0425660</s0></fA47><fA60><s1>P</s1><s2>C</s2></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Proceedings of SPIE, the International Society for Optical Engineering</s0></fA64><fA66 i1="01"><s0>USA</s0></fA66><fC01 i1="01" l="ENG"><s0>It is well known that luminance from photo-chemical reactions of hydroxyl ions in the upper atmosphere (∼85 km altitude) produces a significant amount of night time radiation in the short wave infra-red (SWIR) band with wavelength between 0.9 and 1.7 μm. By examining images in an urban and a rural setting, we investigate the correlation between the appearances of passive dark of night images in the SWIR with NIR- visible. The experimental setup consists of two sensors, a NIR-visible CCD and an InGaAs array sensitive in the SWIR, both co-located on an AZ-EL mount, and both co-boresighted so that different viewing angles of the sky and terrestrial scenes are possible. By making corrections for focal length and pixel size, the visible and SWIR data can be compared. After taking several nights of data in the urban environment of Albuquerque, NM, the entire system was then re-located to a rural location on the island of Kauai in a rural setting with very low ambient light. 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Conference</s1><s2>22</s2><s3>Orlando FL USA</s3><s4>2011-04-26</s4></fA30></pR></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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