Radar

Lits'ebetsong tsa radar, li-detectors li sebelisoa haholo-holo ho fetolela lets'oao la echo le amoheloang ke radar ho tloha ho radio frequency (RF) ho ba lets'oao la baseband bakeng sa ts'ebetso e tsoelang pele joalo ka tekanyo ea sebaka le lebelo la lebelo la sepheo. Haholo-holo, mats'oao a maqhubu a phahameng a maqhubu a RF a hlahisoang ke radar a hlasimolla maqhubu a hasaneng holima sepheo, 'me kamora hore mats'oao ana a echo a amoheloe, ts'ebetso ea demodulation ea lets'oao e tlameha ho etsoa ka sebui. Sesebelisoa se fetolela liphetoho ho amplitude le maqhubu a mats'oao a RF a maqhubu a phahameng ho ba DC kapa mats'oao a motlakase a tlase bakeng sa ts'ebetso e latelang.

Mohloli ha e le hantle ke karolo ea mojule oa ts'ebetso tseleng ea ho amohela radar, haholo-holo ho kenyelletsa amplifier ea matšoao, mixer, oscillator ea lehae, filthara le amplifier e entsoeng ka echo signal receiver. Har'a tsona, oscillator ea sebakeng seo e ka sebelisoa e le mohloli oa pontšo (Local Oscillator, LO) ho fana ka pontšo e kopanetsoeng bakeng sa ho kopanya motsoako, 'me li-filters le li-amplifiers li sebelisoa haholo-holo bakeng sa ho sefa bohlasoa ba lipotoloho le ho phahamisa matšoao a IF. Ka hona, mochine o bapala karolo ea bohlokoa tsamaisong ea radar, 'me ts'ebetso ea eona le botsitso ba ho sebetsa li ama ka ho toba bokhoni ba ho lemoha le ho latela mokhoa oa radar.

Nako ea poso: Jun-25-2023