Yuav ua li cas yog lub hom unmanned aerial tsheb (UAV) wireless kis tau tus mob technologies?

Lub unmanned aerial tsheb (UAV) video kis tau tus mob yog ib feem tseem ceeb ntawm unmanned aerial tsheb (UAV).Nws yog ib homwirelesskhoom siv kis tau tus mob.Nrog rau qee yam thev naus laus zis, cov yeeb yaj kiab ntes tau los ntawm lub koob yees duab nqa los ntawm lub tshav dav hlau tsis muaj neeg tsav tsheb (UAV) yog wirelessly xa mus rauhauv av tswj chaw nres tshebhauv lub sijhawm tiag tiag.Yog li ntawd,dronevideo transmitter istseem hu ua "qhov muag" ntawm drones.

Yog li, dab tsi yog qhov tam sim nowireless kis tau tus mob dronetshuab?the mainstream technology of UAVvideo kis tau tus mobcov hauv qab nos:

1,OFDMCov txheej txheem

Technically, cov tshuab siv dav siv ntau tshaj plaws ntawm lub tsheb tsis muaj neeg tsav dav hlau yog OFDM, uas yog kev hloov pauv ntau tus neeg nqa khoom, cov cuab yeej siv tau zoo dua rau kev sib kis cov ntaub ntawv ceev, thiab OFDM muaj ntau yam zoo, piv txwv li, cov ntaub ntawv loj. tuaj yeem yogkis taunyob rau hauv ib tug nqaim bandwidth, zaus xaiv fading los yog narrowband cuam tshuam tuaj yeem tiv tausthiab so ntawm.

OFDMtechnique tsuas yog siv rau cov ntawv thov xws li LTE (4G) thiab WIFI.

 

2,COFDM Technique

COFDM, piv txwv li, coded OFDM,ntxivqee qhov channel coding (feem ntauntxiving yuam kev kho thiab interleaving)ua ntejOFDM modulation los txhim kho kev ntseeg tau.Qhov txawv ntawm COFDM thiab OFDM yog rauntxivqhov yuam kev kho coding thiab lub sij hawm tiv thaiv ua ntej lub orthogonal modulation, kom lub teeb liab kis tau zoo dua.COFDM yog tam sim no siv dav hauv DVB (digital video broadcasting), DVB-T, DVB-S, DVB-Clwm.

COFDM (Orthogonal Frequency Division Multiplexing) kev hloov kho thev naus laus zis yog qhov tseeb wireless kis tau tus mob thev naus laus zis, uas yog cov cuab yeej siv hluav taws xob tiag tiag, thiab tus lej nce mus txog 1704 tus neeg nqa khoom (2K hom), txawm tias 8K hom, thiab tiag tiag paub cov ntaub ntawv xa mus ceev (2 -20Mbps) ntawm "kev tiv thaiv kev thaiv" thiab "NLSO qhov deb" hauv kev siv tiag tiag thiab qhia tau zoo heev "diffraction" thiab "kev nkag mus" kev ua haujlwm.

COFDM thev naus laus zis yog cov thev naus laus zis zoo dua siv rau wirelessntev ntauHDyeeb yaj duabkis ntawmdrone.

 

3,WIFI Technique

Cov ntaub ntawv kis tau tus mob ntawm Wi-nkaus yuav tsum tau xa mus rau qhov kawg thiab qhov kawg tau txais ua ntej tsim kom muaj kev sib txuas lus handshake mechanism, thiab tom qab ntawd txhua qhov loj yog 512 bytes.Kev xa tawm ntawm txhua pob ntawv cov ntaub ntawv yuav tsum ua kom tiav tsis tu ncua, thiab ib byte hauv cov ntaub ntawv pob ntawv ploj mus ua rau tag nrho cov ntaub ntawv pob ntawv rov qab, thiab cov ntaub ntawv txuas ntxiv tom ntej tsuas yog tom qab tau txais tag nrho ntawm ib pob ntawv, uas yog hauv paus ua rau kev sib kis qeeb.

Rau kev ya davhlau drone, "lub sijhawm tiag tiag" wireless video kis tau yog qhov tseem ceeb.Vim hais tias ntawm ib byte, nws yog lub sij hawm siv heev rau retransmit tag nrho pob ntawv.Wi-Fi kis tau tus mob yog ib tug high-ceev wireless kis tau tus mob technology.Nws yog qhov yooj yim heev rau kev kisthiab txais video nyob rau lub sijhawm tiag tiag raws li TCP / IP raws tu qauv, tab sis lub davhlau ntawm drones yuav tsum muaj kev ua haujlwm siab ntawm lub sijhawm.Yog tias cov ntaub ntawv xa rov qab, tus neeg teb xov tooj tsis tuaj yeem pom cov yeeb yaj kiab tiag tiag.Tsis-delayed real-time HD-videokis tau tus mobyogtseem ceebrautus neeg ua haujlwm.

Lub invention ntawm Wi-Fi technology tsis yog yuav tsum tau siv rau "Air-to-Ground" kis tau tus mob daim ntawv thov scenarios.Ob txoj kev sib tuav tes mechanism ua rau nws tsis yooj yim sua kom daws tau qhov kev ncua deb thiablatencyntawm UAV video kis tau tus mob, yog li nws tsis tuaj yeem ua tau raws li qhov xav tau ntawm UAV videotransmitting and txais.

 

4,Lightbridge cov duab kis tau tus mob Technique

Lightbridge yog ib qho kev sib txuas lus tshwj xeeb uas tsim los ntawm DJI, uas tuaj yeem ua tauxa720p siab txhaisyees duabthiab tso saib.Qhov kev ncua deb tuaj yeem ncav cuag 2 km, thiab ntau tshaj 5 km (LOS).

Lightbridge thev naus laus zis siv cov ntaub ntawv ib-txoj kev kis tau tus mob, uas zoo ib yam li daim ntawv kis tau tus mob ntawm lub TV tshaj tawm theem siab.Piv nrog WIFI, nws tuaj yeem txo qhovyees duabkis tau tus mob ncua, uas yog 2-3 zaug ntawm WIFI kis tau tus mob.Nws yog tsuas yog siv nyob rau hauv tus kheej noj drones xws li DJI.

 

5,Simulation Transfer Techniques

Txawm hais tias yuav luag tsis muaj kev ncua hauv analogcov ntaub ntawvkis tau tus mob, nws yog ib-txoj kev teeb liab kis tau tus mob thev naus laus zis, uas yog me ntsis zoo li kev sib kis ntawm analog TV tshaj tawm cov cim ua ntej tshwm sim ntawm cov teeb liab TV.Thaum lub teeb liab tsis muaj zog, yuav muaj lub vijtsam snowflake, ceeb toom tias tus tsav yuav tsum kho lub davhlau kev taw qhia lossis ya rov qab, ze rau qhov rov qab taw tes.

Lub zog siv ntawm analogcov ntaub ntawvkis tau tus mob loj heev.Thaum nws xav mus txog ntevnrov, nws lub zog xa hluav taws xob tau tshaj li qhov tau teev tseg.Cov thev naus laus zis no yuav luag raug tshem tawm hauv daim ntawv thov ntawm Drone Video Transmitter.

 

Cov ntsiab lus

Kev tshuaj xyuas qhia tau hais tias OFDM thev naus laus zis thiab COFDM thev naus laus zis yog qhov tseem ceeb ntawm Drone Transmitter, thiab COFDM thev naus laus zis tau nce siab dua.Long Range Drone Video Transmitter yog qhov sib npaug ntawm qhov kev ncua deb thiab kev siv hluav taws xob, thiab txuas ntxiv mus rau ntau qhov kev hloov kho thev naus laus zis, xws li kev sib kis spectrum los txhim kho kev tiv thaiv kev cuam tshuam, channel xov xwm kev siv tshuab optimization thiabso ntawm.

 

COFDM technology khoom pom zoo