Irada

Kwiinkqubo ze-radar, ii-detectors zisetyenziswa ikakhulu ukuguqula isignali ye-echo efunyenwe yiradar ukusuka kwisignali yerediyo (RF) ukuya kwisignali ye-baseband ukuze kuqhutywe ngakumbi njengomlinganiselo womgama kunye nomlinganiselo wesantya ekujoliswe kuso. Ngokukodwa, imiqondiso ye-RF enomza ophakamileyo okhutshwe yiradar ivuselela amaza asasazekileyo kwindawo ekujoliswe kuyo, kwaye emva kokuba le miqondiso ye-echo waveform yamkelwe, ukusetyenzwa kophawu lokuthotywa komqondiso kufuneka kuqhutywe ngesixhobo. Isixhobo siguqula utshintsho kwi-amplitude kunye nokuphindaphindwa kweempawu zeRF ze-high-frequency zibe yi-DC okanye iisignali zombane ezisezantsi ukuze zisetyenzwe ngokulandelayo.

I-detector ngokwenene iyingxenye yemodyuli esebenzayo kwindlela yokufumana i-radar, ngokukodwa iquka i-amplifier yesignali, i-mixer, i-oscillator yendawo, isihlungi kunye ne-amplifier eyenziwe ngummkeli wesignali ye-echo. Phakathi kwabo, i-oscillator yendawo ingasetyenziselwa njengomthombo wesignali yesalathisi (i-Oscillator yeNdawo, i-LO) ukubonelela nge-co-signal yokuxuba umxube, kwaye izihlungi kunye ne-amplifiers zisetyenziselwa ukucoca i-clutter ebuthakathaka yeesekethe kunye ne-IF yokwandisa uphawu. Ngoko ke, umtshini udlala indima ebalulekileyo kwinkqubo ye-radar, kwaye ukusebenza kwayo kunye nokuzinza kokusebenza kuchaphazela ngokuthe ngqo ukufumanisa kunye nokukwazi ukulandelela inkqubo ye-radar.

Ixesha lokuposa: Jun-25-2023