Daim ntawv lees paub tuaj yeem muab faib ualub zog taw qhiathiablub zog taw qhiaraws li lawv lub zog.Cov teeb liab fais fab tuaj yeem muab faib ua cov cim ntu ntu thiab cov cim aperiodic raws li seb lawv puas yog lub sijhawm lossis tsis yog.Lub zog hluav taws xob yog qhov kawg ntawm qhov amplitude thiab lub sijhawm, nws lub zog yog qhov kawg, thiab nws lub zog nruab nrab (tshaj ib qho tsis kawg ntawm lub sijhawm) yog xoom.Lub sij hawm ntawm lub zog teeb liab yog infinite, yog li nws lub zog yog infinite.
Cov khoom ntawm ib lub teeb liab tuaj yeem kawm nyob rau hauv ob qhov ntau zaus thiab lub sijhawm sau npe.
Muajplaub yam teeb liabCov khoom nyob rau hauv lub zaus: spectrum, spectral ceev, lub zog spectral ceev thiab lub hwj chim spectral ceev.Lub waveform ntawm lub sij hawm lub hwj chim teeb liab tuaj yeem sawv cev los ntawm Fourier series, thiab cov khoom ntawm cov series tsim cov discrete spectrum ntawm lub teeb liab, thiab nws chav tsev yog V. Lub waveform ntawm lub zog teeb liab tuaj yeem sawv cev los ntawm Fourier transform, thiab Kev ua haujlwm tau txais los ntawm kev hloov pauv waveform yog Lub spectral ceev ntawm lub teeb liab, nws chav tsev yog V / Hz.Ntev npaum li qhov kev ua haujlwm impulse tau qhia, peb tuaj yeem pom nws qhov spectral ntom rau lub zog teeb liab.Lub zog spectral ceev yog qhov kev faib tawm ntawm lub zog ntawm lub zog teeb liab nyob rau hauv qhov zaus, thiab nws chav tsev yog J / Hz.Lub hwj chim spectral ceev yog qhov kev faib tawm ntawm lub zog ntawm lub zog teeb liab nyob rau hauv lub zaus zaus, thiab nws chav tsev yog W / Hz.
Nws paub tias covyam ntxwv ntawm lub teeb liabnyob rau hauv lub sij hawm sau feem ntau suav nrog autocorrelation muaj nuj nqi thiab kev sib raug zoo sib xws.Lub autocorrelation muaj nuj nqi qhia txog qib ntawm kev sib raug zoo ntawm qhov tseem ceeb ntawm lub teeb liab ntawm lub sijhawm sib txawv.Lub autocorrelation muaj nuj nqi R (0) ntawm lub zog teeb liab yog sib npaug rau lub zog ntawm lub teeb liab;thiab autocorrelation muaj nuj nqi R(0) ntawm lub zog teeb liab yog sib npaug rau nruab nrab lub zog ntawm lub teeb liab.Qhov kev sib raug zoo ntawm kev sib raug zoo qhia txog qib ntawm kev sib raug zoo ntawm ob lub teeb liab, uas yog ywj siab ntawm lub sijhawm thiab tsuas yog cuam tshuam nrog lub sijhawm sib txawv, thiab kev sib cuam tshuam ntawm kev sib raug zoo yog cuam tshuam rau qhov kev txiav txim uas ob lub teeb liab sib npaug.Lub autocorrelation muaj nuj nqi ntawm lub zog teeb liab thiab nws lub zog spectral ceev yog ib khub ntawm Fourier transforms.Lub autocorrelation muaj nuj nqi ntawm lub sij hawm lub hwj chim teeb liab thiab nws lub hwj chim spectral ceev tsim ib khub ntawmFourier transforms.Kev sib cuam tshuam ntawm lub zog teeb liab thiab nws qhov sib txawv ntawm lub zog spectral ntom ua ib khub ntawm Fourier transforms.Lub sij hawm lub hwj chim teeb liab txoj kev sib cuam tshuam muaj nuj nqi thiab nws cov hluav taws xob sib txuas ua ke ua ib khub ntawm Fourier transforms.
Lub teeb liab lees paub yog kwv yees li cov lus qhia luv luv saum toj no.Kuv vam tias tsab xov xwm no tuaj yeem pab koj nce koj txoj kev paub.Dhau li ntawm tsab xov xwm no yog tias koj tab tom nrhiav rau lub tuam txhab kev sib txuas lus zoo fiber ntau cov khoom lag luam koj tuaj yeem xav txogtxog peb.
Shenzhen HDV photoelectric Technology Co., Ltd. yog tsuas yog cov chaw tsim khoom ntawm kev sib txuas lus khoom.Tam sim no, cov cuab yeej tsim tawm npog lubONU series, Optical module series, OLT series, thiabtransceiver series.Peb tuaj yeem muab cov kev pabcuam customized rau cov xwm txheej sib txawv.Zoo siab txais tossab laj.
