Lasertej thaj chaw deb hais lus nrhiav teeb liab tsom xam thiab ua
Kev txiav txim siab ntawm cov teeb liab suab nrov: teeb liab tsom xam thiab kev ua haujlwm ntawm laser tej thaj chaw deb hais lus nrhiav kom pom
Nyob rau hauv lub zoo kawg nkaus arena ntawm technology, laser tej thaj chaw deb hais lus nrhiav kom tau zoo li ib tug zoo nkauj symphony, tab sis lub symphony no kuj muaj nws tus kheej "suab nrov" - teeb liab suab. Zoo li cov neeg tuaj saib tsis tau xav txog ntawm kev hais kwv txhiaj, suab nrov feem ntau cuam tshuam rau hauvlaser hais lus nrhiav kom tau. Raws li lub hauv paus, lub suab ntawm laser tej thaj chaw deb hais lus teeb liab nrhiav tau roughly muab faib mus rau hauv lub suab nrov qhia los ntawm lub laser vibration ntsuas ntsuas nws tus kheej, lub suab nrov qhia los ntawm lwm yam suab nrov nyob ze ntawm lub hom phiaj kev co thiab lub suab nrov generated los ntawm ib puag ncig cuam tshuam. Kev tshawb nrhiav kev hais lus ntev ntev yuav tsum tau txais cov cim hais lus uas tuaj yeem lees paub los ntawm tib neeg hnov lus lossis tshuab, thiab ntau lub suab nrov sib xyaw los ntawm ib puag ncig sab nraud thiab kev kuaj xyuas qhov system yuav txo qhov kev hnov lus thiab kev txawj ntse ntawm cov lus qhia tau txais, thiab kev faib tawm ntau zaus. ntawm cov suab nrov no yog ib feem coincidently nrog lub ntsiab zaus band faib ntawm cov teeb liab hais lus (txog 300 ~ 3000 Hz). Nws tsis tuaj yeem lim tau yooj yim los ntawm cov lim dej ib txwm siv, thiab xav tau kev ua haujlwm ntxiv ntawm cov lus pom tau hais tseg. Tam sim no, cov kws tshawb fawb feem ntau kawm txog qhov tsis muaj suab nrov ntawm lub suab nrov thiab cuam tshuam cov suab nrov.
Broadband keeb kwm yav dhau suab nrov feem ntau ua tiav los ntawm lub sijhawm luv luv spectrum kev kwv yees txoj kev, subspace txoj kev thiab lwm yam suab nrov suppression algorithms raws li cov teeb liab ua, nrog rau cov kev kawm tshuab ib txwm siv, kev kawm sib sib zog nqus thiab lwm yam kev hais lus txhim kho thev naus laus zis los cais cov suab lus ntshiab ntawm keeb kwm yav dhau los. suab nrov.
Impulse suab nrov yog lub suab nrov speckle uas yuav qhia tau los ntawm cov nyhuv dynamic speckle thaum qhov chaw ntawm lub hom phiaj nrhiav pom tau cuam tshuam los ntawm lub teeb pom kev ntawm LDV qhov system nrhiav pom. Tam sim no, hom suab nrov no feem ntau yog tshem tawm los ntawm kev kuaj xyuas qhov chaw uas lub teeb liab muaj lub zog siab siab thiab hloov nws nrog tus nqi kwv yees.
Laser tej thaj chaw deb lub suab nrhiav tau daim ntawv thov kev cia siab nyob rau hauv ntau yam xws li interception, multi-mode saib xyuas, intrusion nrhiav, nrhiav thiab cawm, laser microphone, thiab lwm yam. (1) txhim kho kev ntsuas kev ua tau zoo ntawm lub kaw lus, xws li rhiab heev thiab teeb liab-rau-suab nrov piv, optimizing hom nrhiav kom pom, cov khoom thiab cov qauv ntawm kev kuaj pom; (2) Txhim kho qhov kev hloov pauv ntawm cov teeb liab ua algorithms, yog li laser hais lus nrhiav tshuab tuaj yeem hloov mus rau qhov sib txawv ntsuas qhov deb, ib puag ncig thiab kev ntsuas lub hom phiaj; (3) Kev xaiv tsim nyog ntau dua ntawm kev ntsuas kev vibration lub hom phiaj, thiab kev them nyiaj ntau zaus ntawm kev hais lus teeb liab ntsuas ntawm lub hom phiaj nrog cov yam ntxwv sib txawv zaus; (4) Txhim kho qhov system qauv, thiab txuas ntxiv txhim kho qhov kev tshawb pom los ntawm
miniaturization, portability thiab ntse nrhiav kom paub cov txheej txheem.
FIG. 1 (a) Schematic daim duab ntawm laser interception; (b) Schematic daim duab ntawm lub laser anti-interception system
Post lub sij hawm: Oct-14-2024