I ka lilo ʻana o ke kaua asymmetric, ʻoi aku ka nui o nā poʻe kīwila a me nā mea kaua ʻē aʻe i ka pakeneka nui o ka poʻe i make, me ka pōʻino waiwai ʻole.ʻO ka pūʻali koa, ʻoiaʻiʻo, ke manaʻolana nei e pale aku i kēia mau ʻano o ka make a me ka luku.Me nā ʻenehana holomua e hiki ai ke ʻoi aku ka pololei mai kā lākou mau mea kaua, pono lākou i ka hiki ke kuhikuhi a me ka huli ʻana, ʻoiai e noho huna ana.Pono nō hoʻi nā ʻenehana huli ʻana i hoʻomaikaʻi ʻia e ʻae i ka ʻike a me ka ʻike ʻana i nā mamao kū lōʻihi mai nā mea koho.No ka laʻana, ʻoi aku ka maikaʻi o nā lasers ma ke kuhikuhi pololei ʻana, akā he mea nui e hiki i nā poʻe ʻē aʻe ke kiʻi huna pū i ke ʻano.
No ka hoʻoponopono ʻana i kēia mau pilikia hoʻokūkū, ua kau ka pūʻali koa i nā lasers e ʻae iā lākou ʻaʻole e koho wale i ka pahuhopu kahi e paʻi ai nā pū, akā e hoʻohana i kēia mau lasers e ana i ka mamao i ka pahu hopu, hoʻomālamalama i ka wahi a puni, a kuhikuhi i kekahi mea. o ka hoihoi.ʻO ka ʻike ʻana i kahi e kuhikuhi ana nā lasers, ka ʻimi ʻana i nā pahuhopu neʻe, a me ka hōʻemi ʻana i ka pōʻino collateral e pono ai nā ʻōnaehana kiʻi e ʻike i nā lasers ikaika i hoʻohana ʻia ma ke kula.Hāʻawi nā kiʻi paʻi kiʻi indium gallium arsenide (InGaAs) i nā mea hoʻohana i kēia hiki i ke ao a i ka pō.
ʻO ka hapa nui o nā mea kaua alakaʻi laser e alakaʻi ʻia e nā lasers me ka lōʻihi o ka nalu o 1.06 μm.He ikaika loa kēia mau lasers a hiki ke hoʻohana ʻia e kuhikuhi i nā mea he mau mile ka mamao.Ua kaupalena ʻia ka mamao ma muli o ka pololei o ka ʻike ʻana o ka mea hoʻohana i kāna mea e koho ai.Aia kēia me ka wahi laser, ka pahu hopu, a me nā mea a puni ka pahu hopu.I kēia manawa, hoʻohana ka hapa nui o nā ʻōnaehana i kahi ʻāpana ʻike indium antimonide (InSb) e kiʻi i ka wahi.Hoʻopili ʻia kēia mau ʻōnaehana InSb e ʻae i ka pane ʻana i ka lōʻihi o ka hawewe laser 1.0 μm, ʻoi loa ia ma lalo o ka laulā maʻamau InSb peak sensitivity (ma waena o 3 a me 5 μm).Hoʻohana ʻia kēlā laula no kāna noi nui e like me ka mid-wave IR thermal detector.
Hiki i nā kiʻi kiʻi InSb ke ʻike ʻia ka laser infrared a hāʻawi lākou i ka ʻike kūlana a puni ka wahi laser ma muli o ka hoʻokuʻu ʻana o ka wela.ʻO ka ʻaoʻao haʻahaʻa o kēia mau ʻōnaehana ʻo ia ka mea e pono ai ka mea ʻike i ka hoʻoluʻu nui (i lalo i ka 77K) a ʻo kā lākou ʻike i nā lasers 1.06-μm he ʻilihune, ma muli o 70% a me ka hana wela o ka lumi.Hāʻawi lākou i nā kiko laser imaging ma kahi mamao kūʻokoʻa me kahi ʻōnaehana māmā.
HANA 1
ʻAʻole hoʻohana wale ʻia nā lasers e alakaʻi i nā mea kaua i kā lākou pahuhopu, akā hiki ke hāʻawi i ka mea kaua me ka ʻike e pili ana i ka pahu hopu a me nā wahi a puni.Hiki i nā mea huli laser ke hoʻoholo i ka mamao o ka mea hoʻohana.Ke hoʻohana nei kēia mau lasers i kahi hawewe 1.5-μm.Manaʻo ʻia kēia hawewe he "palekana-maka" no ka mea, ʻaʻole e kālele ka ikehu i ka retina o ka maka, a ʻo ka mana opua e pono ai e makapō i ka mea i paʻi ʻia e ka laser he kiʻekiʻe loa.ʻAʻole ʻike ʻia kēia mau laser i nā maka maka maka pō (NVG) a me ka maka, no laila e uhi pono ai lākou.ʻO ka pōmaikaʻi, ʻaʻole ʻike ʻia ka pahuhopu e hōʻailona ʻia lākou e ka laser;ʻo ka ʻaoʻao haʻahaʻa, pilikia pū ka mea kaua i ka ʻike inā pololei ʻo ia i ka pahuhopu.Ma muli o ka maʻalahi loa o InGaAs i nā lasers palekana maka, ke hoʻonohonoho ʻia nei nā kiʻi kiʻi kiʻi InGaAs SWIR i hiki i nā mea kaua ke hōʻoia i ka ʻike pololei ʻana o kā lākou ʻōnaehana hulina, ʻoiai inā ua paʻi ʻia ka ʻōnaehana ma ke kahua.
ʻO ka laser maʻamau ma ke kahua kaua ʻo ia ka mea i hoʻopili ʻia i ka pu raifela a ke koa, a hoʻohana maʻamau i ka nalu nalu ma kahi o 850 nm.Hoʻohana ʻia kēia ʻōkuhi laser e nā koa e kuhikuhi i nā pahu hopu i kekahi i kekahi, a me ke kōkua ʻana i ke kī ʻana i kā lākou mau pū i ka pō ke komo lākou i nā NVG.ʻAʻole ʻike ʻia kēia mau laser e nā kānaka, akā ʻike ʻia e nā maka aniani.ʻAʻole palekana nā lasers i ka maka a ʻike ʻia lākou me ka hoʻohana ʻana i nā ʻano ʻenehana detector ʻē aʻe, kahiko a me nā mea hou.ʻO ka pilikia nui loa, ʻoiai ʻo ka mea kaua e pono ai i nā NVG maikaʻi loa e ʻike hou a i nā manawa pōʻeleʻele i ka pō, hiki i ka ʻenemi ke ʻike maʻalahi i nā lasers me ka ʻenehana goggle night vision.Loaʻa i nā mea kiʻi kiʻi InGaAs ka ʻokoʻa o ka hoʻohālikelike ʻana i hope, ʻoiai ke kiʻi nei lākou i nā lasers kahiko i hoʻohana ʻia me nā NVG, a hiki iā lākou ke kiʻi i ke kiʻi "palekana-maka" a me nā ʻōnaehana laser e hiki mai ana.
Hoʻokahi kāmeʻa SWIR i hoʻomohala kūikawā no ka US Army's Soldier Mobility and Rifle Targeting System, SUI's KTX Camera e hōʻike ana i ka naʻau kiʻekiʻe ma ka 900 a 1700 nm ka lōʻihi o ka nalu a hiki ke hoʻohana ʻia i nā ʻano hana kiʻi haʻahaʻa haʻahaʻa, me ka laser. ʻike maka.Me ke kiʻi ākea ākea ma ka ʻāpana hōkū e hoʻomālamalama i ka lā, kūpono ke kiʻi kiʻi SWIR no ka nānā huna ʻana a hiki ke hoʻohui maʻalahi i nā UAV, nā kaʻa honua ʻole, a i ʻole nā mea hana robotic a i ʻole nā mea hana lima e koʻikoʻi ai ka nui a me ke kaumaha.
Ma nā ʻōnaehana kiʻi o ka hanauna e hiki mai ana, ʻaʻole wale nā lasers e hoʻoholo i ka mamao o ka pahuhopu, ʻo ia hoʻi nā mea ʻimi laser range, akā e ʻae lākou i nā kiʻi lōʻihi ma o ka noe huna ʻana, ka ohu, a me ka lepo.Hoʻohana ʻo LADAR a me ka range-gated imaging i ka laser e hoʻomālamalama i kahi pahuhopu ma kahi lōʻihi.ʻO kēia mamao kūʻokoʻa lōʻihi e hiki ai i ka mea kaua ke ʻike i nā pahuhopu ma kahi lōʻihi ma lalo o nā kūlana māmā a me ka noe a me ka uahi.
Ke hoʻohana nei ka hapa nui o nā ʻōnaehana i kēia manawa i ka hoʻomohala ʻana i nā lasers 1.5-μm no nā kumu palekana o ka maka a no ka mea ua hūnā pū ʻia lākou i ka ʻenehana NVG o kēia manawa, i hoʻonui ʻia i nā lima ʻenemi.Ke kūkulu ʻia nei ka nui o kēia mau ʻōnaehana hanauna hou me ka lumi-mahanahana InGaAs arrays e mālama i ke kaumaha, ka mana, a me ka nui ma ka ʻōnaehana.Hoʻohui kēia mau mea hoʻomohala me nā hiʻohiʻona kiʻekiʻe o nā mea ʻike InGaAs-SWIR, e hāʻawi ana i ka hoʻomaikaʻi ʻana i ka hana me nā kūlana palekana no ka mea hoʻohana hope a me ka poʻe hala ʻole.
Ua kākau ʻia kēia ʻatikala e Dr. Martin H. Ettenberg, Luna Hoʻokele, Imaging Products, a me Doug Malchow, Luna Hoʻokele, Hoʻomohala Pāʻoihana Kūʻai ma SUI (Sensors Unlimited, Inc.), ʻāpana o Goodrich Corporation, Princeton, NJ.
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Manawa Hou: Apr-01-2022
