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Mu makina a radar, zowunikira zimagwiritsidwa ntchito makamaka kusintha chizindikiro cha echo chomwe chimalandiridwa ndi radar kuchokera ku chizindikiro cha radio frequency (RF) kukhala chizindikiro cha baseband kuti chigwiritsidwe ntchito mopitirira muyeso monga kuyeza mtunda ndi kuyeza liwiro la chandamale. Makamaka, zizindikiro za RF zama frequency apamwamba zomwe zimatulutsidwa ndi radar zimasangalatsa mafunde omwazikana pa chandamale, ndipo zizindikiro za echo waveform izi zitalandiridwa, kukonza kwa chizindikiro kuyenera kuchitika kudzera mu chowunikira. Chowunikiracho chimasintha kusintha kwa matalikidwe ndi mafupipafupi a zizindikiro za RF zama frequency apamwamba kukhala zizindikiro za DC kapena zamagetsi zama frequency otsika kuti zigwiritsidwe ntchito pambuyo pake.
Chowunikira ndi gawo la gawo logwira ntchito mu njira yolandirira radar, makamaka kuphatikiza chowongolera chizindikiro, chosakaniza, chowongolera cham'deralo, chowunikira ndi chowongolera chomwe chimapangidwa ndi cholandirira chizindikiro cha echo. Pakati pawo, chowunikira cham'deralo chingagwiritsidwe ntchito ngati gwero la chizindikiro chowunikira (Local Oscillator, LO) kuti chipereke chizindikiro cholumikizirana chosakaniza, ndipo zosefera ndi zokulitsa zimagwiritsidwa ntchito makamaka pakusefa kofooka kwa ma circuit ndi kukulitsa chizindikiro cha IF. Chifukwa chake, chowunikira chimagwira ntchito yofunika kwambiri mu radar system, ndipo magwiridwe antchito ake ndi kukhazikika kwake pantchito zimakhudza mwachindunji kuzindikira ndi kutsata kwa radar system.
Nthawi yotumizira: Juni-25-2023