Zonse ziwiri za chizindikiro ndi phokoso mukulankhulana zitha kuonedwa ngati njira zachisawawa zomwe zimasiyana ndi nthawi.
Mchitidwe wachisawawa uli ndi mawonekedwe a kusinthika kwachisawawa ndi ntchito ya nthawi, ndipo ukhoza kufotokozedwa kuchokera kuzinthu ziwiri zosiyana koma zogwirizana kwambiri:①njira mwachisawawa ndi kusonkhanitsa wopandamalire chitsanzo ntchito;②Chisankho chachisawawa ndi gulu lamitundu yosiyanasiyana.
Ziwerengero za kachulukidwe kachisawawa zimafotokozedwa ndi ntchito yake yogawa kapena kuthekera kwake kachulukidwe. Ngati ziwerengero za ndondomeko yachisawawa sizidalira nthawi yoyambira, imatchedwa ndondomeko yokhazikika.
Mawonekedwe a digito ndi njira ina yachidule yofotokozera zochitika mwachisawawa. Ngati mtengo wamtengo wapatali wa ndondomekoyi ndi wokhazikika komanso ntchito yokhazikika R (T1, T1 + τ) = R (T), ndondomekoyi imatchedwa ndondomeko yowonongeka.
Ngati ndondomeko ili yokhazikika, iyenera kukhala yokhazikika; mwinamwake, sizingakhale zoona.Ngati nthawi yapakati pa ndondomekoyi ndi yofanana ndi chiwerengero cha ziwerengero, ndondomekoyi ndi ergodic.Ngati ndondomeko ndi ergodic, imakhalanso yokhazikika; mwinamwake, sizingakhale zoona.
The autocorrelation function R (T) ya generalized stationary process ndi ntchito yofanana ya kusiyana kwa nthawi R, ndipo R (0) ndi yofanana ndi mphamvu zonse, zomwe ndi R（ τ) phindu lalikulu. Kuchulukana kwamphamvu kwamphamvu (P) ξ (f) ndi Fourier transform's autocorrelation function R() (Wiener Minchin theorem). Zosintha ziwirizi zimatsimikizira ubale wosinthika pakati pa madera a nthawi ndi ma frequency. Kugawa kwa kuthekera kwa njira ya Gaussian kumatsata kugawa kwanthawi zonse, ndipo kufotokozera kwake kwathunthu kumangofunika manambala ake okha. Kugawa kwa mwayi wa mbali imodzi kumangotengera tanthauzo ndi kusiyana, ndipo kugawa kwa mbali ziwiri kumatengera ntchito yolumikizana. Njira ya Gaussian ikadali njira ya Gaussian pambuyo pakusintha kwa mzere. Ubale pakati pa ntchito yogawa yokhazikika ndi ntchito ya Q (x) kapena ERF (x) ndiyothandiza kwambiri pakuwunika magwiridwe antchito odana ndi phokoso pamakina olumikizirana a digito. Ndondomeko ya stochastic yomwe imayima I (T) ikadutsa mu mzere wa mzere, ndondomeko yake yotulutsa ξ 0 (T) imakhalanso yokhazikika.
Makhalidwe owerengera a njira zocheperako zamagulu ocheperako komanso mafunde a sine kuphatikiza phokoso la Gaussian laling'ono ndiloyenera kuwunikira makina osinthira, ma band-pass system, ndi kulumikizana opanda zingwe komwe kumazimiririka njira zambiri. Magawo atatu odziwika bwino pakulankhulana ndi kugawa kwa Rayleigh, kugawa mpunga, ndi kugawa kwanthawi zonse: envelopu ya sinusoidal chonyamulira chizindikiro kuphatikiza narrowband. Phokoso la Gaussian nthawi zambiri limagawira mpunga. Pamene matalikidwe chizindikiro ndi lalikulu, amakonda kugawa yachibadwa; pamene matalikidwe ndi ang'onoang'ono, ndi pafupifupi Rayleigh kugawa.
Phokoso loyera la Gaussian ndi chitsanzo choyenera kusanthula phokoso lowonjezera la tchanelo, ndipo gwero lalikulu la phokoso mukulankhulana kwaphokoso lotentha ndi lamtundu wamtunduwu. Makhalidwe ake pa nthawi ziwiri zosiyana ndi zosagwirizana ndipo zimadziimira payekha. Pambuyo phokoso loyera likudutsa mu dongosolo la band-limited, zotsatira zake zimakhala phokoso lopanda band. Phokoso loyera lotsika komanso phokoso loyera la bandpass ndizofala pakuwunika kwamalingaliro.
Zomwe zili pamwambazi ndi nkhani yakuti "njira yolumikizirana mwachisawawa" yobweretsedwa kwa inu ndi Shenzhen HDV phoelectron Technology Co., Ltd. ndikuyembekeza kuti nkhaniyi ingakuthandizeni kukulitsa chidziwitso chanu. Kupatula nkhaniyi ngati mukuyang'ana kampani yabwino yopanga zida zoyankhulirana zama fiber zomwe mungaganizirezambiri zaife.
Shenzhen HDV phoelectron Technology Co., Ltd. ndiyomwe imapanga zinthu zolumikizirana. Pakadali pano, zida zomwe zimapangidwa zimakwiriraZithunzi za ONU, Optical module mndandanda, Zithunzi za OLT,nditransceiver mndandanda. Titha kupereka ntchito makonda pazochitika zosiyanasiyana. Mwalandiridwafunsani.
