Iradar

Kwiinkqubo ze-radar, ii-detectors zisetyenziswa kakhulu ukuguqula isignali ye-echo efunyenwe yi-radar evela kwisignali ye-radio frequency (RF) ibe yisignali ye-baseband ukuze iqhubeke nokucutshungulwa njengokulinganisa umgama kunye nokulinganisa isantya sethagethi. Ngokukodwa, iisignali ze-RF eziphuma rhoqo ezikhutshwa yi-radar zivuselela amaza asasazekileyo kwithagethi, kwaye emva kokuba ezi signali ze-echo waveform zifunyenwe, ukucubungula i-signal demodulation kufuneka kwenziwe nge-detector. I-detector iguqula utshintsho kwi-amplitude kunye ne-frequency ye-high-frequency signals kwi-DC okanye i-low-frequency electrical signals ukuze kucutshungulwe isignali elandelayo.

izixhobo zokusebenza kunye nezixhobo (3)

Isixhobo sokubona ngeliso siyinxalenye yemodyuli esebenzayo kwindlela yokufumana i-radar, ikakhulu kubandakanya i-signal amplifier, i-mixer, i-local oscillator, i-filter kunye ne-amplifier eyenziwe yi-echo signal receiver. Phakathi kwazo, i-local oscillator ingasetyenziswa njengomthombo wesignali yesalathiso (i-Local Oscillator, i-LO) ukubonelela ngesignali edibeneyo yokuxuba i-mixer, kwaye izihluzi kunye nee-amplifier zisetyenziselwa kakhulu ukuhluza i-clutter ebuthathaka yeesekethe kunye nokukhulisa isignali ye-IF. Ke ngoko, isixhobo sokubona ngeliso sidlala indima ebalulekileyo kwinkqubo ye-radar, kwaye ukusebenza kwayo kunye nokuzinza kokusebenza kuchaphazela ngokuthe ngqo amandla okufumanisa kunye nokulandelela kwenkqubo ye-radar.

Ixesha lokuposa: Juni-25-2023