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Ezinhlelweni ze-radar, ama-detector asetshenziswa kakhulu ukuguqula isignali ye-echo etholwa yi-radar kusuka kusignali ye-radio frequency (RF) ibe yisignali ye-baseband ukuze kuqhutshekwe nokucubungula okufana nokulinganisa ibanga kanye nokulinganisa isivinini sethagethi. Ngokukhethekile, amasignali e-RF avame kakhulu akhishwa yi-radar avusa amagagasi ahlakazekile kuthagethi, futhi ngemva kokwamukelwa kwalezi zimpawu ze-echo waveform, ukucubungula ukususwa kwesignali kudinga ukwenziwa nge-detector. I-detector iguqula izinguquko ku-amplitude kanye nemvamisa yamasignali e-RF avame kakhulu abe yi-DC noma amasignali kagesi ajwayelekile aphansi ukuze kuqhutshekwe nokucubungula isignali okulandelayo.
I-detector empeleni iyingxenye yemodyuli esebenzayo endleleni yokwamukela i-radar, ikakhulukazi ehlanganisa i-signal amplifier, i-mixer, i-local oscillator, i-filter kanye ne-amplifier eyakhiwe yi-echo signal receiver. Phakathi kwazo, i-local oscillator ingasetshenziswa njengomthombo wesignali yokubhekisela (Local Oscillator, LO) ukuhlinzeka ngesignali ehambisanayo yokuxuba i-mixer, kanti izihlungi nama-amplifier asetshenziswa kakhulu ekuhlungeni ama-clutter ama-circuits kanye nokukhulisa isignali ye-IF. Ngakho-ke, i-detector idlala indima ebalulekile ohlelweni lwe-radar, futhi ukusebenza kwayo kanye nokuzinza kokusebenza kuthinta ngqo ikhono lokuthola nokulandelela uhlelo lwe-radar.
Isikhathi sokuthunyelwe: Juni-25-2023