Zeziphi iitekhnoloji zothumelo lwe-wireless yenqwelo-moya (UAV) eqhelekileyo?

Inkqubo yokuhanjiswa kwevidiyo yenqwelo-moya engaphathwanga (i-UAV) yinxalenye ebalulekileyo yenqwelo-moya engenabantu (UAV).Luhlobo oluthilewirelessizixhobo zokuhambisa.Ngobuchwephesha obuthile, ividiyo ethathwe yikhamera ethwelwe yintsimi yenqwelo moya engenabantu (UAV) ithunyelwa ngaphandle kwamacingo.isikhululo solawulo lomhlabangexesha lokwenyani.Ngoko ke,idroneisidlulisi ividiyo isekwabizwa ngokuba "ngamehlo" eedrones.

Ke, yintoni eqhelekileyo yangokuUgqithiso lwamacingo e-droneiteknoloji?itekhnoloji eqhelekileyo ye-UAVukuhanjiswa kwevidiyoezilandelayos:

1,OFDMUbuchwephesha

Ngokobuchwephesha, iteknoloji yothumelo olusetyenziswa kakhulu kwinqwelo-moya engabonakaliyo yi-OFDM, eyimodulation ye-multi-carrier, iteknoloji ifaneleke ngakumbi ukuhanjiswa kwedatha yesantya esiphezulu, kwaye i-OFDM ineenzuzo ezininzi, umzekelo, inani elikhulu ledatha. ingayiiyasasazwakwi-narrowband bandwidth, i-frequency selective fading okanye i-narrowband interference ingachaswakwaye so kwi.

OFDMtI-echnique isetyenziswa ikakhulu kwiinkqubo zesicelo ezifana ne-LTE (4G) kunye ne-WIFI.

 

2,Indlela yeCOFDM

COFDM, oko kukuthi, ikhowudi ye-OFDM,uyongezaikhowudi ethile yesitishi (ukuqalayongezaukulungisa iimpazamo kunye nokushiya)ngaphambiliUkumodareyithwa kweOFDM ukuphucula ukuthembeka kwenkqubo.Umahluko phakathi kweCOFDM kunye neOFDM kukubayongezaikhowudi yokulungiswa kwempazamo kunye nekhefu lokukhusela ngaphambi kokuguqulwa kwe-orthogonal, ukwenzela ukuba umqondiso uhanjiswe ngokufanelekileyo.I-COFDM ngoku isetyenziswa kakhulu kwi-DVB (usasazo lwevidiyo yedijithali), DVB-T, DVB-S, DVB-Cnjl.

I-COFDM (i-Orthogonal Frequency Division Multiplexing) ubuchwephesha bokumodareyitha bubuchwephesha bokuhambisa i-wireless yamva nje, eyona teknoloji ye-multi-carrier yokwenene, kwaye inani lifikelela kwi-1704 carrier (imo ye-2K), nokuba imo ye-8K, kwaye iqonda ngokwenene ukuhanjiswa kwedatha yesantya esiphezulu (2 -20Mbps) ye "anti-blocking" kunye ne "NLSO umgama" ekusetyenzisweni kwangempela kwaye ibonisa "i-diffraction" egqwesileyo kunye "nokungena" ukusebenza.

Itekhnoloji ye-COFDM yitekhnoloji engcono esetyenziswa kwi-wirelessixesha elide uluhluHDiividiyoukuhanjiswa kweidrone.

 

3,Ubuchule be-WIFI

Ukugqithiswa kwedatha ye-Wi-Fi kufuna ukuba isiphelo sothumelo kunye nesiphelo sokufumana kuqala simise indlela yokunxibelelana ngokuxhawula izandla, kwaye ngoko ubukhulu ngamnye bungama-512 bytes.Ukuhanjiswa kwepakethi yedatha nganye kufuneka kugqitywe ngokupheleleyo, kwaye i-byte enye kwipakethi yedatha ilahlekile ukuze ibangele ukuba ipakethi yedatha yonke idluliselwe kwakhona, kwaye ipakethi elandelayo yedatha ihanjiswa kuphela emva kokufunyanwa ngokupheleleyo kwepakethi yedatha enye, eyi unobangela wokulibaziseka kosasazo.

Kwinqwelomoya yedrone, "ixesha lokwenyani" ukuhanjiswa kwevidiyo engenazingcingo kubalulekile.Ngenxa ye-byte enye, kuthatha ixesha elide ukuphinda uthumele yonke ipakethi.Ugqithiso lwe-Wi-Fi bubuchwephesha obuhamba ngesantya esiphezulu obungenazingcingo.Kulula kakhulu ukuhambisakwaye yamkela video ngexesha langempela ngokusekelwe kwiprotocol ye-TCP / IP, kodwa ukuhamba kweedrones kufuna ukusebenza kwexesha langempela.Ukuba ipakethi yedatha iphinde yathunyelwa, umsebenzisi akanakuyibona ividiyo yexesha lokwenyani.Ayilibazisekanga ngexesha lokwenyani HD-ividiyousulelozigxekangenxaumsebenzisi.

Ukuveliswa kobuchwephesha be-Wi-Fi akwenzelwanga ukuba kusetyenziswe kwimo yesicelo sothumelo lwe-"Air-to-Ground"s.Indlela yokuxhawula izandla ezimbini yenza kube nzima ukusombulula umgama kunyeukubambezelekayokuhanjiswa kwevidiyo ye-UAV, ngoko ayinakuhlangabezana neemfuno zevidiyo ye-UAVtransmitinto akunye nokwamkela.

 

4,Lightbridge umfanekiso wedijithali Technique yokuhambisa umfanekiso

I-Lightbridge yitekhnoloji yonxibelelwano olukhethekileyo oluphuhliswe yi-DJI, enokuthihambisa720p ephezulu-definitionividiyokunye nomboniso.Umgama ungafikelela kwi-2 kmkwaye ngaphezu kwe-5 km (LOS).

I-teknoloji ye-Lightbridge isebenzisa ukuhanjiswa kwedatha yendlela enye, efana nefomu yokuhanjiswa kweyona ndawo iphakamileyo yokusasaza i-TV.Xa kuthelekiswa ne-WIFI, inokunciphisaividiyoukulibaziseka kokudluliselwa, okuyi-2-3 amaxesha umgama wokuhanjiswa kwe-WIFI.Isetyenziswa ikakhulu kwiidrones zokusetyenziswa komntu ezifana ne-DJI.

 

5,Iindlela zokuTshintshela zokulinganisa

Nangona kukho phantse akukho kulibaziseka kwi-analogidathaUgqithiso, bubuchwephesha bosasazo lwendlela enye, obufana nokuhanjiswa kwemiqondiso yosasazo ye-analog kamabonakude phambi kokuvela kwemiqondiso yedijithali ye-TV.Xa umqondiso usiba buthathaka, kuya kubakho i-snowflake screen, isilumkiso sokuba umqhubi wenqwelomoya kufuneka ahlengahlengise indlela yenqwelomoya okanye abhabhe ngasemva, kufutshane nendawo yokubuya.

Ukusetyenziswa kwamandla e-analogidathaUsulelo lukhulu kakhulu.Xa ifuna ukufikelela ixesha elideyakhala, amandla ayo othumelo agqithise uluhlu oluchaziweyo.Le teknoloji iphantse yapheliswa kwisicelo seDrone Video Transmitter.

 

Isishwankathelo

Uhlalutyo lubonisa ukuba iteknoloji ye-OFDM kunye neteknoloji ye-COFDM iyona nto iphambili ye-Drone Transmitter, kwaye iteknoloji ye-COFDM iqhubele phambili.I-Long Range Drone Video Transmitter yibhalansi phakathi komgama kunye nokusetyenziswa kwamandla, kwaye inxulumene ngakumbi nobuninzi betekhnoloji yokumodareyitha, efana ne-spectrum yokusasaza ukuphucula amandla okuchasana nokuphazamiseka, ukusetyenziswa kwetekhnoloji yomthombo wolwazi wetshaneli kunyeso kwi.

 

COFDM iteknoloji imveliso isincomo