Radio - Waa maxay waxaasi? Mabda'a la isugu gudbiyo signal ah

Aan kuu sheego sida ay muhiim radio ee dunida maanta. Waa maxay? Qeexidda sheegayaa in ay tahay mid ka mid ah gudbinta fog farsamooyinka dhex hirarka electromagnetic. Inta badan, ereyga laftiisa ay tilmaamaysaa qalab in la Been abuurtay by saynisyahano Ruush Popovym Aleksandrom Stepanovichem 1895. Iyo tan iyo markaas, waxa uu ma laga badiyay ay ku tacaluqa.

Tallaabada taariikhda

arrimaha radio nolosha ma noqon karaan dadka ukas. Waxa la abuuray by saynisyahano Ruush in qalabka ayaa badbaadiyey boqolaal noloshooda ka waayen oo ka mid ah "Titanic" - waxay lahaayeen in ay u diraan signal samatabbixinta ah.

A. S. Popov waxay bilaabeen inay dib u sameeyaan tijaabooyinka uu 1889. Isaga oo la alifay uu aasaasay on aragnimada saynisyahan Jarmalka hirarka korontada Genriha Rudolfa Hertz ayaa, inta lagu guda jiro kaas oo ay ahayd in ay gaaraan muuqaalka kore ee xoogga ololka weyn. In 1894, waayo Popov ayaa loogu talagalay qalab ugu horeysay.

Wax yar ka dib waxaa jiray radio aad. Tani waxay dhacday sanadkii 1895. Raadinta si kor loogu qaado calaamadaha beeraha electromagnetic, hindisa isticmaalaan arrin resonance ah. Oo diiwaangelinta oo ka mid ah calaamadaha lagu kala qaado khuseysaa coherer - tuubo galaas la diiwaan gelintii biraha, kaas oo beddeli karta ay iska caabin ah. Xilligaas wixii ka bilaabmaa xilligii tiknolojiyada radio.

Mabda'a la isugu gudbiyo signal ah

Dhamaan dunida casriga ah in ay ku salaysan qalabka elektarooniga ah, taas oo ay gacanta calaamadaha radio waayo, xoog. Iyo si ay u fahmaan waxa raadiyaha, waa in aad u fahmi lahaayeen mabaadiida hawlgalka qalab.

Dhinaca gudbinta foomamka signal a side hirka sare ah inta jeer ee gaar ah, kaas oo markaas superimposed on socodka macluumaadka. Ma meyxaanahaa. Jidka United ee hirarka radio timaada by antenna gudbinta ku qubanayo galay meesha bannaan ee.

signal qalab sii negaan

Meesha fog of signal isha diray by aqbaliddoodii radio anteeno la qabtay. Talaabadani waxay ka dhigan processing signal inta jeer ee radio in dhacdaa marxaladood:

1. Isbedbedelka ee beeraha electromagnetic abuuraa hadda korontada ee qadanayo.
2. -Xoog Low hadda korontada la sifeeyo in la baabi'iyo faragelin iyo in la ogaado macluumaad waxtar leh.
3. calaamadaha "safeeyey" waxaa Decoded, la ogaado, macluumaad waxtar leh si loo sii daayo.
4. Waxaa beddelay go'an of view radio-saaxiibtinimo ee qalabka dhawaaqa, image, video.

Xaaladaha intooda badan, ka hor inta kelmadaha signalka maraa tiro badan oo ah qalab - Sammeecado, converters noqnoqoshada - oo sakhiray barnaamijka processing digitizing. Ka dibna kaliya ee aan awoodin in ay fahmaan xogta ay heshay Idaacada uu noqon doono. Tani waxay mar kor u aragtida ah oo tayo leh iyo macluumaad.

Radio ee wakhtigan casriga ah

In dunida maanta, raadiyaha ayaa laga badiyay ay caan - in ay dhegeystaan music, la xidhiidhi jiray ehelkayga meel fog, heli news isticmaalo qalabka casriga ah. Laakiin 40 sano ka hor qalab this ahayd isha ugu muhiimsan ee macluumaadka madadaalada. Radio fiidkii dheer soo ururay hareeraha qoys, saaxiibo, kooxaha.

The Idaacadda hore u yimid ka dib 1907 ee New York. Lee De Forest sameeyey munaaraddii daayey. Si kastaba ha ahaatee, ay si joogto ah la beddelo meesha of raadiyaha. Waxaa hoos u dhac koritaanka caan ah hab cusub oo madadaalo. Toban sano ka dib saldhigga bilaabay in ay u muuqdaan in wadamada Yurub - Czechoslovakia, Ireland, Holland. Oo ka dib markii 20-mada, iyagu waa baahsan. Iyo horumarinta ilaa maantadan la joogo.

Haddaba radio Internet aad loo jecel yahay. Waa maxay? Dhab ahaantii, music isku warbaahinta, news, laakiin masaafada u kala qaado iyada oo loo marayo hab-a shabakad caalami ah. Laakiin sabab u tahay horumarka joogtada ah ee isgaarsiinta xogta, iyo ugu dhakhsaha badan habkan of baahinta waxaa laga reebay nolosheena.