Rātari

I roto i ngā pūnaha radar, ko te nuinga o ngā taputapu kite e whakamahia ana hei huri i te tohu whakaata i riro mai i te radar mai i te tohu auau reo irirangi (RF) ki te tohu turanga mō te tukatuka atu pērā i te ine tawhiti me te ine tere o te ūnga. Ina koa, ko ngā tohu RF auau-tiketike e tukuna ana e te radar ka whakaoho i ngā ngaru marara i runga i te ūnga, ā, i muri i te whiwhinga o ēnei tohu ngaru whakaata, me whakahaere te tukatuka tango tohu mā te taputapu kite. Ka huri te taputapu kite i ngā huringa o te kaha me te auau o ngā tohu RF auau-tiketike ki ngā tohu hiko DC, auau-iti rānei mō te tukatuka tohu i muri mai.

Ko te pūoko he wāhanga o te waeine mahi i roto i te ara whiwhi radar, ko te nuinga kei roto ko te whakakaha tohu, te whakaranu, te oscillator ā-rohe, te tātari me te whakakaha i titoa mai i te kaiwhiwhi tohu whakaata. I roto i ēnei, ka taea te whakamahi i te oscillator ā-rohe hei pūtake tohu tohutoro (Local Oscillator, LO) hei whakarato tohu-tahi mō te whakaranu i te ranunga, ā, ko ngā tātari me ngā whakakaha te nuinga e whakamahia ana mō te tātari ngoikore o ngā ara iahiko me te whakakaha tohu IF. Nō reira, he mahi nui tā te pūoko i roto i te pūnaha radar, ā, ko tana mahi me te pumau mahi ka pā tika ki te kaha ki te kimi me te aroturuki i te pūnaha radar.

Wā tuku: Pipiri-25-2023