Yibuphi ubuchwepheshe bokudlulisa okungenawaya kwezimoto ezingenazintambo ezijwayelekile ezingabanjwanga (UAV)?

Uhlelo lokudluliswa kwevidiyo lwemoto yasemoyeni engaphethwe muntu (UAV) luyingxenye ebalulekile yemoto yasemoyeni engaphethwe muntu (UAV).Kuwuhlobo oluthileokungenantamboimishini yokudlulisela.Ngobuchwepheshe obuthile, ividiyo ethwetshulwe ikhamera ethwelwe yinkundla ye-airerial engabhalwanga (UAV) idluliselwa ngokungenantamboisiteshi sokulawula phansingesikhathi sangempela.Ngakho-ke,indiza engenazindizaisidlulisi sevidiyo iseyaziwa nangokuthi "amehlo" ama-drones.

Ngakho, yini evamile yamanjei-drone wireless transmissionubuchwepheshe?ubuchwepheshe obujwayelekile be-UAVukudluliswa kwevidiyo kukhonaOkulandelayos:

1,OFDMIcebo

Ngobuchwepheshe, ubuchwepheshe bokudlulisa obusetshenziswa kakhulu emotweni yendiza engenamuntu yi-OFDM, okuwukushintshaniswa kwezinkampani eziningi, ubuchwepheshe bufaneleka kakhulu ekudluliselweni kwedatha ngesivinini esikhulu, futhi i-OFDM inezinzuzo eziningi, isibonelo, inani elikhulu ledatha. kungaba njaloidluliselwekumkhawulokudonsa we-narrowband, ukufiphala okukhetha imvamisa noma ukuphazamiseka kwe-narrowband kungaphikiswafuthi so ku.

OFDMtI-echnique isetshenziswa kakhulu ezinhlelweni zohlelo ezifana ne-LTE (4G) ne-WIFI.

 

2,I-COFDM Technique

I-COFDM, okungukuthi, i-OFDM enekhodi,uyanezelaukufakwa kwekhodi kwesiteshi okuthile (ikakhulukaziengezaukulungisa iphutha nokushiya phakathi)ngaphambiliUkuguqulwa kwe-OFDM ukuthuthukisa ukwethembeka kwesistimu.Umehluko phakathi kwe-COFDM ne-OFDM ukuthiengezaikhodi yokulungiswa kokulungiswa kwephutha kanye nesikhawu sokuvikela ngaphambi kokushintshwa kwe-orthogonal, ukuze isignali idluliselwe ngempumelelo kakhulu.I-COFDM okwamanje isetshenziswa kabanzi ku-DVB (ukusakazwa kwevidiyo yedijithali), i-DVB-T, i-DVB-S, i-DVB-Cnjll.

Ubuchwepheshe bokumodulation be-COFDM (Orthogonal Frequency Division Multiplexing) ubuchwepheshe bamuva nje bokudlulisa okungenantambo, okuwubuchwepheshe bangempela obuthwala izinto eziningi, futhi inombolo ifinyelela inkampani yenethiwekhi engu-1704 (imodi engu-2K), ngisho nemodi engu-8K, futhi ibona ukudluliswa kwedatha ngesivinini esikhulu (2 -20Mbps) "ye-anti-blocking" kanye "nebanga le-NLSO" ekusetshenzisweni kwangempela futhi ibonisa ukusebenza kahle "kwe-diffraction" kanye "nokungena".

Ubuchwepheshe be-COFDM ubuchwepheshe obungcono obusetshenziswa ku-wirelesseside ububanziI-HDamavidiyoukudluliswa kweindiza engenazindiza.

 

3,I-WIFI Technique

Ukudluliswa kwedatha yokudluliswa kwe-Wi-Fi kudinga ukuthi isiphetho sokudlulisela kanye nesiphetho sokwamukela kuqala kumise indlela yokuxhumana yokuxhawula, bese usayizi ngamunye ube ngamabhayithi angu-512.Ukudluliswa kwephakethe ledatha ngalinye kufanele kugcwaliswe kuphelele, futhi i-byte eyodwa ephaketheni ledatha iyalahleka ukuze kubangele ukuthi lonke iphakethe ledatha lidluliselwe kabusha, futhi iphakethe ledatha elilandelayo lidluliselwa kuphela ngemva kokuthola okuphelele kwephakethe elilodwa ledatha, okuyi Imbangela eyinhloko yokubambezeleka kokudlulisela.

Endizeni ye-drone, ukuhanjiswa kwevidiyo "yesikhathi sangempela" kubalulekile.Ngenxa yebhayithi eyodwa, kudla isikhathi esiningi ukudlulisa kabusha iphakethe lonke.Ukudluliswa kwe-Wi-Fi ubuchwepheshe bokudlulisa okungenazintambo obunesivinini esikhulu.Kulula kakhulu ukudlulisafuthi thola vi-ideo ngesikhathi sangempela esekelwe kuphrothokholi ye-TCP/IP, kodwa ukundiza kwama-drones kudinga ukusebenza kwesikhathi sangempela okuphezulu.Uma iphakethe ledatha lidluliselwa kabusha, u-opharetha akakwazi ukubona ividiyo yesikhathi sangempela.Ividiyo ye-HD yesikhathi sangempela engalibazisiukudluliswakukhonaokugxekayookweopharetha.

Ukusungulwa kobuchwepheshe be-Wi-Fi akuhloselwe ukuthi kusetshenziswe esimweni sohlelo lokudlulisa "Air-to-Ground"s.Indlela yokuxhawula yezindlela ezimbili yenza kungenzeki ukuxazulula ibanga kanyeukubambezelekayokudluliswa kwevidiyo ye-UAV, ngakho ayikwazi ukuhlangabezana nezidingo zevidiyo ye-UAVtransmitting anokwamukela.

 

4,I-Lightbridge Digital Transmission Technique

I-Lightbridge ubuchwepheshe obukhethekile bokuxhumanisa ukuxhumana obuthuthukiswe yi-DJI, obungakwazidlulisa720p high-definitionividiyokanye nesibonisi.Ibanga ngokuvamile lingafinyelela ku-2 kmfuthi ngaphezu kuka-5 km (LOS).

Ubuchwepheshe be-Lightbridge busebenzisa indlela eyodwa yokudlulisa idatha, efana nefomu lokudlulisela lombhoshongo wokusakaza we-TV wezinga eliphezulu.Uma kuqhathaniswa ne-WIFI, inganciphisaividiyoukubambezeleka kokudlulisela, okuyizikhathi ezingu-2-3 zebanga lokudlulisela i-WIFI.Isetshenziswa kakhulu kuma-drones okusetshenziswa komuntu siqu njenge-DJI.

 

5,Ukulingisa Ukudlulisa Amasu

Nakuba cishe akukho ukubambezeleka ku-analogidathaukudluliswa, ubuchwepheshe bokudlulisa isignali bendlela eyodwa, obufana nokudluliswa kwamasiginali okusakaza kumabonakude we-analogi ngaphambi kokuvela kwamasiginali we-TV yedijithali.Uma isignali iba buthaka, kuzoba nesikrini seqhwa, esixwayisa ngokuthi umshayeli kufanele alungise indlela yendiza noma andizele abuyele emuva, eduze nendawo yokubuya.

Ukusetshenziswa kwamandla kwe-analogidathaukudluliswa kukhulu kakhulu.Lapho ifuna ukufinyelela isikhathi esidekukhala, amandla ayo okudlulisela eqe ububanzi obushiwo.Lobu buchwepheshe sebucishe baqedwa ekusetshenzisweni kwe-Drone Video Transmitter.

 

Isifinyezo

Ukuhlaziya kukhombisa ukuthi ubuchwepheshe be-OFDM kanye nobuchwepheshe be-COFDM yibo obuhamba phambili be-Drone Transmitter, kanti ubuchwepheshe be-COFDM buthuthuke kakhulu.I-Long Range Drone Video Transmitter ibhalansi phakathi kwebanga namandla okusetshenziswa, futhi ihlobene futhi nobuchwepheshe obuningi bokuguquguquka, obufana ne-spectrum yokusabalalisa ukuze kuthuthukiswe amandla okulwa nokuphazamiseka, ukwenziwa ngcono kobuchwepheshe bomthombo wolwazi wesiteshi kanyeso ku.

 

Izincomo zemikhiqizo yobuchwepheshe be-COFDM