Chaw taws teeb tswj kav hlau txais xov xa thiab tau txais cov teeb liab tswj chaw taws teeb los ntawm kev hloov kho thiab demodulation ntawm electromagnetic tsis. Lawv lub hauv paus ntsiab lus tseem ceeb muaj ob kauj ruam tseem ceeb: electromagnetic yoj tiam ntawm qhov kawg ntawm kev xa tawm thiab kev tsim kho teeb liab ntawm qhov kawg tau txais.
Cov txheej txheem kis tau tus mob: Los ntawm hluav taws xob teeb liab mus rau electromagnetic wave Radiation
Thaum ib lub pob ntawm cov chaw taws teeb tswj raug nias, lub voj voog sab hauv tsim muaj qhov tsawg- zaus hluav taws xob teeb liab nrog rau cov cai tshwj xeeb, xws li cov lus txib "hloov channel" ntawm lub chaw taws teeb TV. Txij li thaum qis- cov teeb liab zaus tsis tuaj yeem xa mus rau qhov deb, zaus hloov kho (FM) lossis amplitude modulation (AM) thev naus laus zis yog siv los thauj cov teeb liab mus rau qhov siab -ntau zaus nqa lub nthwv dej. Lub modulated tam sim no dhau los ntawm tus kav hlau txais xov sab hauv coil, tsim ib qho chaw electromagnetic alternating, uas yog radiated sab nraud raws li xov tooj cua tsis, propagating tshaj li ntawm kaum mus rau pua pua meters.
Kev txais tos: Electromagnetic Wave Decoding thiab Command Execution
Cov kav hlau txais xov tau txais (xws li cov hlau hlau ntawm lub tsheb khoom ua si) ua rau muaj kev cuam tshuam tam sim no nyob rau hauv kev cuam tshuam ntawm electromagnetic tsis. Qhov tsis muaj zog tam sim no muaj qhov siab -nthwv dej ntau zaus thiab cov teeb liab hloov pauv. Cov neeg nqa khoom zaus yuav tsum tau lim tawm los ntawm lub demodulation Circuit Court kom rov tsim kho tus thawj tswj cai. Cov teeb liab txiav txim siab tom qab ntawd lees paub los ntawm microprocessor, thaum kawg tsav lub cev muaj zog lossis hluav taws xob hloov mus ua haujlwm xws li kev txav mus los lossis kev taw qhia. Tag nrho cov txheej txheem feem ntau ua tiav hauv milliseconds.
Qhov kev xaiv ntawm cov teeb liab modulation ncaj qha cuam tshuam rau cov chaw taws teeb tswj cov nyhuv: zaus hloov kho (FM) muaj zog tiv thaiv - muaj peev xwm cuam tshuam thiab feem ntau yog siv rau drone chaw taws teeb tswj; amplitude modulation (AM) circuits yog qhov yooj yim thiab feem ntau yog siv hauv cov khoom ua si. Sib piv cov kav hlau txais xov ntev mus rau lub wavelength (xws li lub quarter-wavelength tsim) tuaj yeem txhim kho cov teeb liab kis tau tus mob thiab txais txiaj ntsig zoo.