Ko te tohu me te haruru i roto i te whakawhitiwhiti korero ka kiia he tukanga matapōkere ka huri i te wa.
Ko te tukanga tupurangi nga ahuatanga o te taurangi matapōkere me te mahi wa, ka taea te whakaahua mai i nga tirohanga rereke e rua engari e hono tata ana: (1) Ko te tukanga tupurangi ko te huinga o nga mahi tauira mutunga kore; (2) Ko te tukanga matapōkere he huinga taurangi matapōkere.
Ko nga ahuatanga tauanga o nga tukanga matapōkere ka whakaahuahia e to raatau mahi toha, te mahi kiato tūponotanga ranei. Mēnā he motuhake ngā āhuatanga tauanga o tētahi hātepe matapōkere i te wā tīmata, ka kīia he hātepe pūmau.
Ko nga ahuatanga tau tetahi atu huarahi pai mo te whakaahua i nga mahi tupurangi. Mēnā he pūmau te tikanga o te hātepe me te taumahinga autocorrelation R(t1,t1+τ)=R(T), ka kīia he pūmau whānui te hātepe.
Mēnā he pūmau tonu te hātepe, me tū whānui tonu, ā, ehara i te mea pono.
He hāneanea te hātepe mēnā he rite tōna wā toharite ki te toharite tatauranga e hāngai ana.
Mēnā he hāneanea te hātepe, ka noho pūmau, ā, ehara i te mea pono.
Ko te taumahinga autocorrelation R(T) o te tukanga noho noa he taurite o te rereketanga o te wa r, a ko te R(0) he rite ki te katoa o te hiko toharite, a ko te uara teitei o te R(τ). Ko te Pξ(f) kiato hiko hiko ko te hurihanga Fourier o te mahi autocorrelation R(ξ) (Wiener - Sinchin theorem). Ko tenei huringa takirua ka whakatau i te hononga whakawhiti i waenga i te rohe wa me te rohe auau. Ko te tuari tūponotanga o te hātepe Gaussian e whai ana ki te tohatoha noa, a ko tana whakaahuatanga tauanga katoa e hiahia ana ki ona ahuatanga tau anake. Ko te tohatoha tūponotanga ahu-tahi ka whakawhirinaki anake ki te toharite me te rerekee, engari ko te tuari-a-rua-a-ahua ka whakawhirinaki te nuinga ki te mahi honohono. Ko te tukanga Gaussian he tukanga Gaussian tonu i muri i te huringa raina. Ko te hononga i waenga i te mahi tohatoha noa me te mahi Q(x) ranei erf(x) he tino whai hua ki te tātari i te mahi aukati haruru o nga punaha whakawhitiwhitinga mamati. Whai muri i te tukunga o te tukanga matapōkere ξi(t) i roto i te pūnaha rārangi, ka pūmau hoki tōna tukanga whakaputa ξ0(t).
Ko nga ahuatanga tauanga o te tukanga matapōkere me te ngaru-ngaru me te haruru Gaussian narrow-band he pai ake mo te tātaritanga o nga hongere ara-maha kua memenge i roto i te punaha whakahurihuri/punahapepee/whakawhitiwhiti ahokore. Ko te tohatoha Rayleigh, te tohatoha raihi me te tohatoha noa e toru nga tohatoha noa i roto i te whakawhitiwhiti korero: ko te kopaki o te tohu kawe sinusoidal me te haruru kuiti Gaussian ko te tikanga tohatoha raihi. A, no te he nui te kaha tīwera tohu, ahu te reira ki te tohatoha noa. Ina he iti te kaha kaha, he tata ki te tohatoha Rayleigh.
Ko te haruru ma o Gaussian he tauira pai hei tātari i te haruru taapiri o te hongere, me te puna haruru nui i roto i te whakawhitiwhiti korero, te haruru waiariki, no tenei momo haruru. Ko ona uara i nga wa rereke e rua kaore i te hono me te motuhake o te tatauranga. Whai muri i te haruru ma ka pahemo i roto i te punaha roopu-iti, ko te hua ko te haruru roopu-iti. Ko te haruru ma te iti-pass me te haruru ma te band-pass he mea noa i roto i te tātaritanga ariā.
Ko runga ake nei ko te tuhinga "tuhinga matapōkere o te punaha whakawhitiwhiti korero" i kawea mai e Shenzhen HDV Phoelectron Technology LTD., Ko te HDV he kamupene motuhake i roto i te whakawhitiwhiti korero hei taputapu whakaputa matua, ko te kamupene ake te whakaputa: raupapa ONU, raupapa kōwae whatu,raupapa OLT, Ko nga raupapa transceiver he raupapa wera o nga hua.
