Rada

Na sistemu radar, a na-eji ihe nchọta eme ihe iji tụgharịa mgbama mgbanaka nke radar nwetara site na mgbama redio ugboro ugboro (RF) ka ọ bụrụ akara baseband maka nhazi ọzọ dị ka nha anya na nha ọsọ ebumnuche. Kpọmkwem, akara ngosi RF dị elu nke radar na-ewepụta na-akpalite ebili mmiri ndị gbasasịrị na ebumnuche, ma mgbe enwetara akara ngosi echo waveform ndị a, a ga-eme nhazi nrụpụta mgbaama site na onye nchọta. Ihe nchọta na-atụgharị mgbanwe na njupụta na ugboro nke mgbama RF dị elu n'ime DC ma ọ bụ akara ọkụ eletrik dị ala maka nhazi mgbaama na-esote.

Ihe nchọta bụ akụkụ nke modul arụ ọrụ na ụzọ nnata radar, ọkachasị gụnyere mgbama mgbama, igwekota, oscillator mpaghara, nzacha na amplifier nke mejuputara nrịbama mgbaama. N'ime ha, enwere ike iji oscillator mpaghara mee ihe dị ka isi iyi mgbama (Local Oscillator, LO) iji nye akara ngosi maka ịgwakọta mixer, na nzacha na amplifiers na-ejikarị maka nzacha nzacha nke sekit na ọ bụrụ na ọ na-abawanye mgbaàmà. Ya mere, onye na-achọpụta ihe na-arụ ọrụ dị mkpa na usoro radar, na ịrụ ọrụ ya na nkwụsi ike na-arụ ọrụ na-emetụta kpọmkwem nchọpụta na ike nlekota nke usoro radar.

Oge nzipu: Jun-25-2023