Vhidhiyo kutapuriranandeyekufambisa vhidhiyo nemazvo uye nekukurumidza kubva kune imwe nzvimbo kuenda kune imwe, izvo zvinopesana nekupindira uye zvakajeka munguva chaiyo.
The unmanned aerial vehicle (UAV) video transmission system chikamu chakakosha chemotokari yemuchadenga isina munhu (UAV).Imhando yewirelesskutapurirana michina.Nehumwe tekinoroji, vhidhiyo yakatorwa nekamera inotakurwa nemunda isina kufambisa ndege yemudenga (UAV) inofambiswa zvisina wayapasi control stationmunguva chaiyo.Naizvozvo,dronevhidhiyo transmitter isanozivikanwawo se "meso" emadrones.
Saka, chii chinowanzoitikadrone wireless transmissionteknolojia?tekinoroji yakakura yeUAVvhidhiyo kutumira varizvinoteveras:
1,OFDMTechnique
Nehunyanzvi, iyo inonyanya kushandiswa tekinoroji yekutapurirana pamotokari isina kutakurwa yemuchadenga ndeyeOFDM, inova yakawanda-inotakura modulation, tekinoroji yakanyatsokodzera kumhanyisa data data, uye OFDM ine zvakawanda zvakanaka, semuenzaniso, yakawanda data. anogona kuvatransmittedmune narrowband bandwidth, frequency selective fading kana narrowband kupindira kunogona kudziviswauye so on.
OFDMtechnique inonyanya kushandiswa kune masisitimu ekushandisa akadai seLTE (4G) uye WIFI.
2,COFDM Technique
COFDM, kureva, coded OFDM,anowedzeraimwe chiteshi kodhi (kunyanyawedzerakugadzirisa kukanganisa uye kupindirana)pamberiOFDM modulation yekuvandudza kuvimbika kwehurongwa.Musiyano uripo pakati peCOFDM neOFDM ndewewedzeraiko kukanganisa kugadzirisa coding uye nguva yekudzivirira pamberi pe orthogonal modulation, kuitira kuti chiratidzo chifambiswe zvakanyanya.COFDM parizvino inonyanya kushandiswa muDVB (digital vhidhiyo kutepfenyura), DVB-T, DVB-S, DVB-Cetc.
Iyo COFDM (Orthogonal Frequency Division Multiplexing) modulation tekinoroji ndiyo ichangoburwa isina waya yekutapurirana tekinoroji, inova chaiyo yakawanda-inotakura tekinoroji, uye nhamba inosvika 1704 mutakuri (2K modhi), kunyangwe 8K modhi, uye inonyatso kuona kumhanyisa data kutapurirana (2. -20Mbps) ye "anti-blocking" uye "NLSO chinhambwe" mukushandiswa chaiko uye inoratidza yakanakisa "diffraction" uye "kupinza" kuita.
COFDM tekinoroji tekinoroji iri nani inoshandiswa kune isina wayarefu rangeHDmavhidhiyokutapurirana kwedrone.
3,WIFI Technique
Iyo data yekufambiswa kweWi-Fi kutapurirana kunoda kuti magumo ekutumira uye magumo ekugamuchira atange amisa nzira yekukurukurirana yekubata maoko, uyezve saizi yega yega i512 bytes.Kufambiswa kwepakiti yega yega data kunofanirwa kupedzwa kwakasimba, uye imwe byte mupaketi yedata inorasika kuti iite kuti data rese packet ritumirwezve, uye inotevera data packet inofambiswa chete mushure mekugamuchira kwakazara kweimwe data packet, inova iyo chikonzero chikuru chekunonoka kutapurirana.
Pakubhururuka kwedrone, "chaiyo-nguva" isina waya vhidhiyo kutapurirana kwakakosha.Nekuda kweimwe byte, zvinotora nguva zvakanyanya kuendesa paki yese.Wi-Fi transmission tekinoroji yekumhanyisa isina waya yekufambisa.Zviri nyore kutamisauye gamuchira video munguva chaiyo yakavakirwa paTCP/IP protocol, asi kubhururuka kwema drones kunoda yakakwira chaiyo-nguva kuita.Kana iyo data packet ikatumirwazve, mushandisi haakwanise kuona vhidhiyo yenguva chaiyo.Isina kunonoka-chaiyo-nguva HD-vhidhiyokutapuriranavarikutsoropodzanokutiopareta.
Iko kugadzirwa kweWi-Fi tekinoroji haina kuitirwa kushandiswa kune "Air-to-Ground" yekufambisa application mamiriro.s.Iyo nzira mbiri yekubata ruoko inoita kuti zvisaite kugadzirisa chinhambwe uyelatencyyeUAV vhidhiyo kutapurirana, saka haigone kusangana nezvinodiwa zveUAV vhidhiyotransmitting and kugamuchira.
4,Lightbridge digitaalinen image transmission Technique
Lightbridge inyanzvi yekutaurirana yekubatanidza tekinoroji yakagadziriswa neDJI, inogonatransmit720p yakakwirira-tsanangudzovhidhiyouye kuratidza.Nhambwe inowanzosvika 2 km, uye anopfuura 5 km (LOS).
Lightbridge tekinoroji inoshandisa nzira imwe-yekufambiswa kwedata, iyo yakafanana neiyo nzira yekufambisa yeyepamusoro-yepamusoro TV shongwe yekutepfenyura.Kuenzaniswa neWIFI, inogona kuderedzavhidhiyokutapurirana kunonoka, inova 2-3 nguva iyo WIFI yekufambisa kureba.Inonyanya kushandiswa mukushandisa kwemunhu drones senge DJI.
5,Simulation Transfer Techniques
Kunyange zvazvo pane inenge isina kunonoka mune analogdatakutapurirana, inzira imwe-yenzira yekufambisa tekinoroji, yakangofanana nekufambiswa kwemasaini eanalog TV nhepfenyuro isati yabuda masaini edhijitari eTV.Kana chiratidzo chikapera simba, pachava nechidzitiro chechando chechando, ichiyambira kuti mutyairi wendege anofanira kugadzirisa mafambiro endege kana kubhururuka achidzokera, pedyo nenzvimbo yekudzokera.
Iko kushandiswa kwesimba kweanalogdatakutapurirana kwakakura kwazvo.Kana ichida kusvika kurebarang, simba rayo rekutapurirana rakapfuura danho rakatarwa.Iyi tekinoroji yakapotsa yabviswa mukushandiswa kweDrone Vhidhiyo Transmitter.
Summary
Ongororo inoratidza kuti tekinoroji yeOFDM uye tekinoroji yeCOFDM ndiyo yakakura yeDrone Transmitter, uye tekinoroji yeCOFDM yakawedzera.Yakareba Range Drone Vhidhiyo Transmitter chiyero pakati pechinhambwe uye mashandisiro emagetsi, uye zvakare chine chekuita neakawanda tekinoroji tekinoroji, senge kupararira spectrum kuvandudza anti-kupindira kugona, chiteshi ruzivo sosi tekinoroji optimization uye.so on.
COFDM tekinoroji chigadzirwa kurudziro
Nguva yekutumira: Mar-09-2023