Hiki ke hoʻokaʻawale ʻia nā hōʻailona hōʻoia inā hōʻailona ikehuanā hōʻailona manae like me ko lakou ikaika. Hiki ke hoʻokaʻawale ʻia nā hōʻailona mana i nā hōʻailona periodic a me nā hōʻailona aperiodic e like me ka manawa a i ʻole. He palena ʻole ka hōʻailona ikehu i ka amplitude a me ka lōʻihi, ʻo kona ikehu ka palena, a ʻo kona mana maʻamau (ma luna o kahi manawa palena ʻole) ʻaʻole ia. ʻO ka lōʻihi o ka hōʻailona mana he palena ʻole, no laila ʻaʻole pau kona ikehu.
Hiki ke aʻo ʻia nā waiwai o kekahi hōʻailona ma ka domain frequency a me ka domain time.
Aiaʻehā ʻano hōʻailonanā waiwai i loko o ke kikowaena alapine: spectrum, spectral density, energy spectral density and power spectral density. Hiki ke hōʻike ʻia ke ʻano nalu o ka hōʻailona mana manawa e ka moʻo Fourier, a ʻo nā mea o ka moʻo e lilo i ka spectrum discrete o ka hōʻailona, a ʻo kāna ʻāpana ʻo V. Hiki ke hōʻike ʻia ke ʻano nalu o ka hōʻailona ikehu e ka Fourier transform, a ʻO ka hana i loaʻa ma ka hoʻololi ʻana i ka nalu ʻO ka mānoanoa spectral o kahi hōʻailona, ʻo kona ʻāpana ʻo V/Hz. I ka wā e hoʻokomo ʻia ai ka hana impulse, hiki iā mākou ke ʻike i kona density spectral no kahi hōʻailona mana. ʻO ka mānoanoa spectral ikehu ka puʻunaue ʻana o ka ikehu o ka hōʻailona ikehu ma ka domain frequency, a ʻo kāna ʻāpana ʻo J/Hz. ʻO ka mana spectral density ka hāʻawi ʻana i ka mana o ka hōʻailona mana i ka domain frequency, a ʻo kāna ʻāpana he W / Hz.
Ua ʻike ʻia ʻo kaʻano o ka hōʻailonai loko o ke kikowaena manawa e hoʻokomo nui i ka hana autocorrelation a me ka hana cross-correlation. Hōʻike ka hana autocorrelation i ke kiʻekiʻe o ka pilina ma waena o nā waiwai o kahi hōʻailona i nā manawa like ʻole. Ua like ka hana autocorrelation R(0) o ka hoailona ikehu me ka ikehu o ka hoailona; a ua like ka hana autocorrelation R(0) o ka hoailona mana me ka mana awelika o ka hoailona. Hōʻike ka hana hoʻopili keʻa i ke kiʻekiʻe o ka pilina ma waena o nā hōʻailona ʻelua, kahi kūʻokoʻa o ka manawa a pili wale i ka ʻokoʻa o ka manawa, a pili ka hana hoʻohui i ke ʻano o ka hoʻonui ʻana i nā hōʻailona ʻelua. ʻO ka hana autocorrelation o ka hōʻailona ikehu a me kona puʻupuʻu spectral ikehu he ʻelua o ka hoʻololi ʻana o Fourier. ʻO ka hana autocorrelation o ka hōʻailona mana manawa a me kona mana spectral density i hoʻokumu ʻia i ʻeluaHoʻololi ʻo Fourier. ʻO ka hana hoʻopili keʻa o ka hōʻailona ikehu a me kona mānoanoa spectral cross-energy he mau hoʻololi Fourier. ʻO ka hana hoʻoponopono cross-correlation o ka hōʻailona mana manawa a me kāna spectrum mana keʻa e hana i nā hoʻololi ʻelua o Fourier.
ʻO ka hōʻailona i hoʻopaʻa ʻia ma kahi o ka hoʻolauna pōkole ma luna. Manaʻo wau e kōkua kēia ʻatikala iā ʻoe e hoʻonui i kou ʻike. Ma waho aʻe o kēia ʻatikala inā ʻoe e ʻimi nei i kahi ʻoihana mea hana uila fiber optical maikaʻi āu e noʻonoʻo aie pili ana iā mākou.
ʻO Shenzhen HDV photoelectric Technology Co., Ltd. ka mea hana nui i nā huahana kamaʻilio. I kēia manawa, uhi nā mea hana i hana ʻia i kamoʻo ONU, moʻo module optical, OLT moʻo, amoʻo transceiver. Hiki iā mākou ke hāʻawi i nā lawelawe kūikawā no nā hiʻohiʻona like ʻole. Aloha oekukakuka.
