Njengoko imfazwe iya isiba yi-asymmetric, abemi kunye nabanye abangajoliyo baba yipesenti enkulu yamaxhoba, kunye nomonakalo ongalindelekanga.Umkhosi, ngokuqinisekileyo, unethemba lokuziphepha ezi ntlobo zokwenzakala kunye nokutshatyalaliswa.Ngokuqhubela phambili kwetekhnoloji evumela ukuchaneka ngakumbi kwizixhobo zabo, zifuna ukukhomba okungcono kunye nobuchule bokujolisa, ngelixa behlala befihliwe.Uphuculo lwetekhnoloji yokujolisa evumela ukuchongwa kunye nokuchongwa kwimigama emide emileyo ukusuka kubayili nayo iyafuneka.Umzekelo, iilaser zigqwesile ekuboniseni ngokuchanekileyo, kodwa kubalulekile ukuba abanye bakwazi ukuzenzela umfanekiso ofihlakeleyo wemeko ngokunjalo.
Ukujongana nale miceli mngeni yokujolisa, umkhosi usasaze iilaser ezibavumelayo ukuba bangakhethi nje into ekujoliswe kuyo apho iimbumbulu kufuneka zibethe, kodwa basebenzise ezi lasers ezifanayo ukulinganisa umgama oya ekujoliswe kuwo, ukukhanyisa indawo ejikelezileyo, okanye ukukhomba abanye into. umdla.Ukubona apho ii-lasers zikhomba khona, ukulandelela iithagethi ezihambayo, kunye nokunciphisa umonakalo wokubambisana kufuna iinkqubo zokucinga ezibona i-lasers esebenzayo esetyenziswa kwintsimi.Iikhamera zobushushu begumbi ze-indium gallium arsenide (InGaAs) zinika abasebenzisi obu buchule kwiimeko zasemini okanye zasebusuku.
Uninzi lweembumbulu ezikhokelwa nge-laser zilawulwa yi-laser kunye ne-wavelength ye-1.06 μm.Ezi lasers zinamandla kakhulu kwaye zinokusetyenziswa ukukhomba izinto kumgama ozimayile ezininzi.Umgama ulinganiselwe ubukhulu becala yindlela umntu oyisebenzisayo anokubona ngayo ngokuchanileyo into ayichazayo.Oku kubandakanya indawo yelaser, ekujoliswe kuyo, kunye nezinto ezijikeleze ithagethi.Okwangoku, uninzi lweenkqubo zisebenzisa i-indium antimonide (InSb) detector array ukwenza umfanekiso wendawo.Ezi nkqubo ze-InSb zicutshiwe ukuze zivumele impendulo phantsi kwe-1.0 μm laser wavelength, ephantsi kakhulu kwi-InSb peak sensitivity range (phakathi kwe-3 kunye ne-5 μm).Olo luhlu lusetyenziselwa usetyenziso lwalo oluphambili njengesixhobo se-IR se-thermal esiphakathi kwamaza.
Iikhamera ze-InSb zivumela i-laser ye-infrared ukuba ibonakale kwaye zibonelela ngolwazi lwemeko ejikeleze indawo yelaser ngenxa yokukhutshwa kwe-thermal yendawo.I-downside yale nkqubo kukuba i-detector idinga ukupholisa okubalulekileyo (ukuhla ukuya kwi-77K) kunye novelwano lwabo kwi-1.06-μm lasers lubi, ngenxa ye-70% kunye nokusebenza kweqondo lokushisa kwegumbi.Benza i-imaging laser spots kumgama omkhulu wokuma kunye nenkqubo elula kakhulu.
UMZO1
I-Lasers ayisetyenziswanga kuphela ukukhokela izixhobo ezijoliswe kuzo, kodwa zinokubonelela umlwi ngolwazi malunga nokujoliswe kuko kunye nendawo eyingqongileyo.Abafumani boluhlu lweLaser bavumela umsebenzisi ukuba amisele umgama oya kujoliswe kuko.Ezi lasers ngoku zisebenzisa malunga ne-1.5-μm ubude bobude.Obu bubude bamaza buthathwa “njengokhuseleko lwamehlo” kuba amandla awajoli kwiretina yeliso, kwaye amandla okubona afunekayo ukumfamekisa umntu obethwe yilaser aphezulu kakhulu.Ezi lasers azibonakali kwiiglasi zombono wasebusuku (NVGs) kunye nasemehlweni, ngaloo ndlela zizenza zigqunywe ngokufanelekileyo.Inzuzo yeyokuba ekujoliswe kuko ayazi ukuba ziphawulwa ngelaser;i-downside kukuba i-warfighter nayo inengxaki yokwazi ukuba ijolise ngokuchanekileyo kwithagethi.Ngenxa yokuba i-InGaAs ikwanovelwano kakhulu kwii-laser ezikhuselekileyo zamehlo, iikhamera ze-SWIR zokucinga ze-InGaAs zisasazwa ukuze abaqhubi bemfazwe baqinisekise ukuba inkqubo yabo yokujolisa isabonwa ngokuchanekileyo, nokuba inkqubo iye yafakwa ebaleni.
Eyona laser ixhaphakileyo kwithafa ledabi yileyo incanyathiselwe kumpu wejoni, kwaye ngokuqhelekileyo isebenzisa ubude obungamaza angama-850 nm.Esi sikhombi selaser sisetyenziswa ngamajoni ukukhomba iithagethi omnye komnye, kunye nokuncedisa ekujoliseni imipu yabo ebusuku xa benxibe ii-NVGs.Ezi lasers azibonakali ebantwini, kodwa ziyabonakala kwiiglasi.Iilaser zompu azikhuselekanga ngamehlo kwaye zibonwa kusetyenziswa ezinye iintlobo ezininzi zetekhnoloji yokubona, endala kunye nentsha.Eyona ngxaki inkulu kukuba ngelixa umloli wemfazwe efuna ezona NVGs zibalaseleyo ukuze abone ngakumbi kwaye ngamaxesha amnyama ebusuku, utshaba luyakwazi ukubona ngokulula ii-lasers ngetekhnoloji endala kunye nengabizi kakhulu yokujonga ebusuku.Iifoto ze-InGaAs zinenzuzo eyahlukileyo yokuba zombini zihambelana ngasemva, njengoko zifanekisela iilaser ezindala ezisetyenziswa kunye neeNVGs, kwaye ziyakwazi ukwenza umfanekiso "ukhuselekile kwamehlo" kunye neenkqubo zelaser zesizukulwana esilandelayo.
Enye ikhamera ye-SWIR eyaphuhliswa ngokukodwa kwi-US Army's Soldier Mobility kunye neRifle Targeting System, i-KTX Camera ye-SUI ibonakalisa ubuntununtunu obuphezulu kuluhlu lwamaza angama-900 ukuya kwi-1700 nm kwaye ingasetyenziswa kwimisebenzi eyahluka-hlukeneyo yomgangatho wokukhanya osezantsi, kubandakanywa ne-laser. ukubhaqwa.Ngomfanekiso obanzi oguquguqukayo ekukhanyeni kwenkwenkwezi okuya ngqo ekukhanyeni kwelanga, umfanekiso we-SWIR ulungele ukucupha okufihlakeleyo kwaye unokudityaniswa ngokulula kwii-UAVs, izithuthi eziphantsi komhlaba ezingenamntu, okanye ezinye izixhobo zerobhothi okanye eziphathwa ngesandla apho ubungakanani kunye nobunzima bubaluleke kakhulu.
Kwiinkqubo zokucinga zesizukulwana esilandelayo, iilaser aziyi kumisela kuphela umgama ekujoliswe kuwo, okt izifumani zoluhlu lwelaser, kodwa ziya kuvumela umfanekiso omde ngokusebenzisa inkungu efihlakeleyo, inkungu, kunye nothuli.I-LADAR kunye ne-range-gated imaging isebenzisa i-laser ukukhanyisa injongo kwimigama emide.Lo mgama omde wokuma uvumela umlwi ukuba achonge iithagethi kuluhlu olude phantsi kwazo naziphi na iimeko zokukhanya nokuba yinkungu nomsi.
Uninzi lweenkqubo ngoku phantsi kophuhliso zisebenzisa i-laser ye-1.5-μm ngezizathu zokhuseleko lwamehlo kwaye ngenxa yokuba zifihlakele kwi-teknoloji ye-NVG yangoku, eye yanda kwizandla zotshaba.Uninzi lwezi nkqubo zesizukulwana esilandelayo ziphuhliswa kunye negumbi lobushushu be-InGaAs arrays ukugcina ubunzima, amandla, kunye nobukhulu kwinkqubo.Olu phuhliso ludibanisa kunye neempawu ezibukhali eziphezulu ze-InGaAs-SWIR detectors, ezibonelela ngokuphucuka komsebenzi kunye neemeko ezikhuselekileyo kumsebenzisi wokugqibela kunye nabangenacala abamsulwa.
Eli nqaku libhalwe nguDkt Martin H. Ettenberg, uMlawuli, uMveliso weeMveliso, kunye noDoug Malchow, uMphathi, uPhuhliso lwezoRhwebo lwezoRhwebo kwi-SUI (Sensors Unlimited, Inc.), inxalenye yeGoodrich Corporation, Princeton, NJ.
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