Radar

M'makina a radar, zowunikira zimagwiritsidwa ntchito makamaka kutembenuza siginecha ya echo yolandilidwa ndi radar kuchokera ku siginecha ya wailesi (RF) kukhala siginecha ya baseband kuti ikonzedwenso monga kuyeza mtunda ndi kuyeza liwiro la chandamale. Makamaka, ma siginecha apamwamba kwambiri a RF omwe amatulutsidwa ndi radar amasangalatsa mafunde amwazikana pa chandamale, ndipo ma echo waveform akalandira ma siginecha amtunduwu, kuwongolera ma siginecha kuyenera kuchitidwa kudzera pa chowunikira. Chowunikirachi chimasintha kusintha kwa matalikidwe ndi ma frequency a ma siginecha apamwamba kwambiri a RF kukhala DC kapena ma siginecha amagetsi otsika kuti asinthe ma siginecha.

Chowunikiracho kwenikweni ndi gawo la gawo lothandizira munjira yolandirira radar, makamaka kuphatikiza cholumikizira chizindikiro, chosakanizira, oscillator wamba, fyuluta ndi amplifier wopangidwa ndi cholandila chizindikiro cha echo. Pakati pawo, oscillator wamba angagwiritsidwe ntchito ngati gwero lazizindikiro (Local Oscillator, LO) kuti apereke chizindikiro chophatikizira chosakanizira, ndipo zosefera ndi amplifiers zimagwiritsidwa ntchito makamaka pakusefa kofooka kwa mabwalo ndi kukulitsa chizindikiro cha IF. Chifukwa chake, chowunikira chimakhala ndi gawo lofunikira mu radar system, ndipo magwiridwe ake ndi kukhazikika kwake kumakhudza mwachindunji kuzindikira ndi kutsata luso la radar.

Nthawi yotumiza: Jun-25-2023