Changchun lub koom haum ntawm Optics Analyzes txoj kev loj hlob thiab Trends ntawm lim Spectroscopy-hom Hyperspectral koob yees duab
Jul 05, 2023
Cov koob yees duab Hyperspectral tuaj yeem sib txuas cov duab thev naus laus zis nrog cov thev naus laus zis tshawb pom, thiab thaum ntsuas cov yam ntxwv ntawm lub hom phiaj, lawv tuaj yeem tsim ntau lub voj voog nqaim rau txhua daim duab spatial kom ua tiav cov kev pab cuam spectral tas li, thiab cov ntaub ntawv sib txawv spectral tuaj yeem cuam tshuam txog qhov sib txawv ntawm lub cev. qauv thiab tshuaj muaj pes tsawg leeg nyob rau hauv ib tug feature. Piv nrog rau ob-dimensional spatial imaging, cov koob yees duab hyperspectral tuaj yeem tau txais cov ntaub ntawv spatial thiab spectral txog lub hom phiaj. Ntawm qhov kev daws teeb meem tshwj xeeb, lawv tuaj yeem ua tiav qhov tshwj xeeb txuas ntxiv spectral ntawm cov yam ntxwv hauv av hauv ntau hom spectral bands, uas muaj cov txiaj ntsig tseem ceeb rau kev txheeb xyuas thiab txheeb xyuas cov yam ntxwv hauv av. Nws muaj txiaj ntsig zoo hauv kev ua liaj ua teb, hav zoov, dej, av, tsuas, thiab lwm yam kev tshawb fawb thiab kev saib xyuas ib puag ncig.
Nrog rau txoj kev loj hlob sai ntawm cov txheej txheem lim txheej, kev txhim kho ntawm lim spectroscopic hyperspectral koob yees duab tau nthuav dav. Hyperspectral koob yees duab raws li lub ntsiab lus lim spectroscopic tau dhau los ua ib feem tseem ceeb ntawm hyperspectral tej thaj chaw deb sensing loads nrog qhov zoo ntawm bandwidth loj, siab spatial daws teeb meem, siab spectral daws teeb meem, thiab lub teeb thiab me me. Lawv tau dav siv nyob rau hauv lub network ntawm micro-nano-satellite hyperspectral constellations.
Raws li McMasters Consulting, Liu Chunyu cov kev tshawb fawb pab pawg ntawm Changchun lub koom haum ntawm Optics thiab Precision Mechanics thiab Physics, Suav Academy ntawm Sciences, tsis ntev los no tau luam tawm ib tsab xov xwm nyob rau hauv phau ntawv journal Infrared thiab Laser Engineering nyob rau hauv lub ntsiab lus ntawm "Txoj kev thiab tiam sis ntawm lim spectroscopic hyperspectral koob yees duab. kev loj hlob." Liu Chunyu feem ntau koom nrog kev tshawb fawb ntawm kev tsim kho qhov muag thiab kev tsim qauv ntawm optoelectronic.
Schematic daim duab ntawm hyperspectral imaging txoj cai
Qhov kev tshawb fawb no tsuas yog tshuaj xyuas cov lim spectroscopic hyperspectral koob yees duab, qhia txog cov lim dej spectroscopic on-board hyperspectral imaging payloads hauv tsev thiab txawv teb chaws, thiab lim spectroscopic hyperspectral imaging systems nyob rau hauv kev tsim kho hauv av, thiab tshuaj xyuas cov kev daws teeb meem, kev ua haujlwm indexes, thiab daim ntawv thov kev cia siab ntawm cov tshuab no, thiab piav qhia txog cov yam ntxwv ntawm kev ua haujlwm, qhov zoo, thiab qhov tsis zoo ntawm lub tshuab lim spectroscopic raws li cov koob yees duab hyperspectral. Cov kev ua haujlwm, cov txiaj ntsig, thiab qhov tsis zoo ntawm lub koob yees duab hyperspectral raws li lub hauv paus ntsiab lus lim spectroscopy tau piav qhia, thiab thaum kawg, txoj kev loj hlob ntawm cov koob yees duab lim spectroscopic tau pom dua.
Lub tshuab lim log hyperspectral lub koob yees duab siv lub log log raws li lub spectral lub caij kom tau txais spectral dluab ntawm txawv wavelength bands los ntawm rotating lub lim log, yog li ua tiav cov spectral sib cais ntawm complex rau monochromatic teeb. Cov khoom tseem ceeb ntawm lub koob yees duab lim log hyperspectral yog lub log lim, uas lub log lim tuaj yeem hloov pauv qhov sib thooj spectral ntau raws li qhov sib txawv ntawm kev soj ntsuam. Nrog rau txoj kev loj hlob ntawm spectral imaging technology, tus naj npawb ntawm nrhiav bands yog nce, thiab lub lim log yuav tsis ua tau raws li ntau yam ntawm high-resolution soj ntsuam, yog li nws yog nce siv nyob rau hauv multispectral nrhiav kom tau.
Tunable lim hyperspectral cov koob yees duab siv cov ntxaij lim dej tunable raws li cov khoom siv spectral thiab feem ntau muab faib ua Liquid Crystal Tunable Filter (LCTF) hyperspectral koob yees duab, Acousto-Optic Tunable Filter (AOTF) hyperspectral koob yees duab, thiab MEMS tunable FP kab noj hniav koob yees duab. MEMS Tunable Fabry-Perot Cavity Filters (AOTF) koob yees duab hyperspectral.
Lub koob yees duab zoo li lub ntsej muag lim dej, tseem hu ua lub koob yees duab tunable lim hyperspectral, ua kom cov qauv txuas ntxiv hauv thaj chaw spectral thiab spatial. Lub tswv yim yog siv ib lub voj voos-zoo li multilayer nyias-zaj duab xis nruab nrab raws li lub lim thiab mus rau mount nws nyob ze ntawm ib tug ob-dimensional array detector thiaj li hais tias ntau cov duab ntsiab ntawm lub sensor sib haum mus rau ib tug tshwj xeeb spectral band ntawm lub tunable lim. Raws li kev sib txuas lus ntawm cov tuav ntawm cov gradient lim thiab cov duab cov ntsiab lus ntawm lub ntes, gradient lim hyperspectral koob yees duab tuaj yeem muab faib ua cov kab gradient thiab lim array hom.
Cov qauv thiab spectroscopy ntawm ib qho kev lim dej zoo li qub
Quantum dots, tseem hu ua "nanocrystals," yog cov khoom siv tsis muaj tshuaj lom neeg uas ruaj khov thiab muaj lub vojvoog me dua li lub vojvoog ntawm cov nthwv dej loj. Kev sib xyaw ua ke ntawm ntau hom quantum dots tso cai rau tib lub sijhawm tshawb pom ntawm cov wavelengths sib txawv, uas yog lub hauv paus ntsiab lus ntawm kev txhim kho quantum dot spectrometer (CQD). Lub tswvyim ntawm spectrometers nrog high-precision optical thiab mechanical Cheebtsam yog loj, kim, complex, thiab hnyav heev txwv nyob rau hauv daim ntawv thov.
Daim duab tseem ceeb ntawm NIR quantum dot spectrometer
Feem ntau, lub lim spectroscopy-hom hyperspectral lub koob yees duab yog nyob rau hauv thawj theem, thiab nws cov kev daws teeb meem spectral tseem yuav tsum tau muab piv rau high-precision grating dispersion spectroscopy txoj kev. Tsis tas li ntawd, kev sib xyaw ua ke ntawm cov lim dej thiab lub ntsuas ntsuas yuav ua kom zoo dua qhov kev daws teeb meem spectral ntawm lub kaw lus, uas tuaj yeem sib piv rau high-precision grating dispersive spectroscopy. Yog li ntawd, kev sib txuas cov lim thiab ntes wafers kuj yog ib qho kev txhim kho tseem ceeb ntawm cov koob yees duab coated hyperspectral. Nws yog ib qho yooj yim kom pom tias txoj kev loj hlob ntawm lim-raws li lub koob yees duab hyperspectral yuav ua rau muaj kev cuam tshuam kev loj hlob nyob rau hauv lub tshav pob ntawm hyperspectral imaging, uas yuav, nyob rau hauv lem, ua rau txoj kev loj hlob ntawm hyperspectral tej thaj chaw deb sensing technology rau micro-nano-satellite thiab nteg cov kev. lub hauv paus rau kev ua haujlwm yav tom ntej ntawm micro-nano-hyperspectral satellite constellations nyob rau hauv orbit los pab rau lub teb chaws kev lag luam zoo dua.
Qhov project no tau txais kev txhawb nqa los ntawm National Natural Science Foundation ntawm Tuam Tshoj (41504143), Kev Tshawb Fawb Cov Khoom Siv Txhim Kho ntawm Suav Academy ntawm Kev Tshawb Fawb (YJKYYQ20190044), Natural Science Foundation of Anhui Province (1908085 ME135), thiab Youth Innovation Promotion Council ntawm Suav Academy ntawm Sciences (2016203).