Izimpawu zokuvuma zingahlukaniswa zibeamasignali amandlafuthiamasignali amandlangokwamandla abo.Amasignali amandla angahlukaniswa abe amasignali ezikhathi ezithile kanye namasignali aperiodic kuye ngokuthi ayenzeka ngezikhathi ezithile noma cha.Isignali yamandla inomkhawulo nge-amplitude kanye nobude besikhathi, amandla ayo anomkhawulo, futhi amandla ayo amaphakathi (ngaphezu kwenani elingapheli lesikhathi) anguziro.Ubude besikhathi sesiginali yamandla abupheli, ngakho amandla aso awapheli.
Izici zesignali ethile zingafundwa kukho kokubili isizinda sefrikhwensi kanye nesizinda sesikhathi.
Banguizinhlobo ezine zesignaliizakhiwo kusizinda samafrikhwensi: i-spectrum, ukuminyana kwe-spectral, ukuminyana kwe-spectral yamandla kanye nokuminyana kwe-spectral yamandla.I-waveform yesignali yamandla ngezikhathi ezithile ingamelwa uchungechunge lwe-Fourier, futhi izinto zochungechunge zakha i-spectrum ehlukene yesignali, futhi iyunithi yayo ingu-V. I-waveform yesiginali yamandla ingamelwa yi-Fourier transform, futhi umsebenzi otholwe ukuguqulwa kwe-waveform Ukuminyana kokubukeka kwesiginali, iyunithi yayo ingu-V/Hz.Uma nje umsebenzi we-impulse wethulwa, singathola futhi ukuminyana kwayo kwe-spectral yesiginali yamandla.Ubuningi be-spectral yamandla ukusatshalaliswa kwamandla esignali yamandla kusizinda samafrikhwensi, futhi iyunithi yayo ingu-J/Hz.I-spectral density yamandla ukusatshalaliswa kwamandla esignali yamandla kusizinda samafrikhwensi, futhi iyunithi yayo ingu-W/Hz.
Kuyaziwa ukuthiizici zesignaliesizindeni sesikhathi ikakhulukazi sihlanganisa umsebenzi wokuhlanganisa okuzenzakalelayo nomsebenzi wokuhlobana okuphambene.Umsebenzi we-autocorrelation ubonisa izinga lokuhlobana phakathi kwamanani esignali ngezikhathi ezihlukile.Umsebenzi we-autocorrelation R(0) wesignali yamandla ulingana namandla esignali;kanye nomsebenzi wokuhlanganisa okuzenzakalelayo u-R(0) wesiginali yamandla ulingana nesilinganiso samandla esignali.Umsebenzi wokuxhumanisa ubonisa izinga lokuhlobana phakathi kwamasignali amabili, elizimele esikhathini futhi elihlobene kuphela nomehluko wesikhathi, futhi umsebenzi wokuhlobana okuphambene uhlobene nendlela amasignali amabili aphindaphindeka ngayo.Umsebenzi wokuzihlanganisa we-autocorrelation yesiginali yamandla kanye nokuminyana kwe-spectral yamandla kuhlanganisa ama-Fourier transforms.Umsebenzi wokuzihlanganisa we-autocorrelation yesiginali yamandla ngezikhathi ezithile kanye nokuminyana kwe-spectral yamandla kwakha ipheyaU-Fourier uyashintsha.Umsebenzi wokuxhumanisa isignali yamandla kanye nokuminyana kwe-spectral yamandla ahlukahlukene kuhlanganisa ama-Fourier transforms.Umsebenzi wokuxhumanisa isiginali yamandla ngezikhathi ezithile kanye ne-spectrum yayo yamandla ahlukene kwenza ipheya yama-Fourier transforms.
Isiginali eqinisekisiwe cishe iyisethulo esifushane esingenhla.Ngethemba ukuthi lesi sihloko singakusiza ukukhulisa ulwazi lwakho.Ngaphandle kwalesi sihloko uma ufuna inkampani enhle yabakhiqizi bemishini yokuxhumana ye-fiber ongase uyicabangeleMayelana NATHI.
I-Shenzhen HDV photoelectric Technology Co., Ltd. ingumkhiqizi wemikhiqizo yezokuxhumana.Njengamanje, imishini ekhiqizwayo ihlanganisaUchungechunge lwe-ONU, optical module uchungechunge, Uchungechunge lwe-OLT, futhiuchungechunge lwe-transceiver.Singahlinzeka ngezinsizakalo ezenziwe ngezifiso ezimweni ezahlukahlukene.Wamukelekilebonisana.
