I-RTK GPS vs DGPS: Yeyiphi eNgcono kwiiMfuno zakho?
Kwihlabathi lanamhlanje, ukuchaneka kunye nokusebenza kakuhle ngundoqo kwiiprojekthi ze-geospatial. Abavavanyi, iinjineli, kunye nabanye bafuna isisombululo esifanelekileyo sovavanyo. Abamkeli be-GNSS abakwinqanaba eliphezulu njenge-RTK GPS kunye ne-DGPS zibonelela ngokuchaneka okungcono kunye nokuthembeka.
Eli nqaku lijonga umahluko phakathi kwe-RTK GPS kunye ne-DGPS. Siza kubona ukuba basebenza njani kwaye balungele ntoni na. Ukwazi amandla kunye nobuthathaka babo kukunceda ukhethe eyona ilungileyo kwiiprojekthi zakho.
Isiqulatho
- 1. Ukuqonda i-GNSS kunye nokubeka iimpazamo
- 2. I-GPS eyahlukileyo (i-DGPS)
- 3. I-Real-Time Kinematic (RTK) GPS
- 4. Iiyantlukwano eziphambili phakathi kwe-RTK GPS kunye ne-DGPS
- 5. Izinto eziluncedo kunye neMida ye-RTK GPS
- 6. Ukusetyenziswa kwe-RTK GPS kunye ne-DGPS
- 7. IiNdlela eziNgqongileyo kwikamva kuPhuculo lokuChaneka kwe-GNSS
- 8. Isiphelo
Izinto eziphambili zokuThatha
I-RTK GPS kunye ne-DGPS ziitekhnoloji zokubeka ezikumgangatho ophezulu ezisetyenziswa kwiiprojekthi ze-geospatial.
RTK GPS ibonelela ngexesha lokwenyani, inqanaba lesentimitha ukuchaneka.
I-DGPS iphucula ukuchaneka kwendawo ngokulungisa iimpawu ezivela kwiisathelayithi ze-GNSS.
Zombini i-RTK GPS kunye ne-DGPS zinezibonelelo zazo ezizodwa kunye nemida.
Ukukhetha iteknoloji efanelekileyo kuxhomekeke kwiimfuno ezithile zesisombululo sovavanyo esifunekayo.
Ukuqonda i-GNSS kunye neempazamo zokubeka indawo
| Uhlobo lwempazamo | Unobangela | IQhinga lokuNciphisa |
| Ukulibaziseka kwe-Ionospheric | Ii-electron zamahhala kwi-ionosphere | Imodeli yexesha langempela kunye nezilungiso |
| Ukulibaziseka kweTropospheric | Ukwahluka koxinzelelo kwitroposphere | Izilungiso zomoya |
| Iimpazamo zeClock yeSathelayithi | Khuleka kwiwotshi yesathelayithi | Izilungiso zewotshi yesathelayithi |
| Iimpazamo kwiindlela ezininzi | Ukubonakaliswa komqondiso ukusuka kumphezulu | Abamkeli beGNSS abakumgangatho ophezulu |
| Ukungachaneki kweDatha ye-Ephemeris | Idatha yendawo yesatellite ayichanekanga | Ukusetyenziswa kwedatha ehlaziyiweyo ye-ephemeris |
| Ingxolo yomamkeli | Ingxolo yomamkeli wangaphakathi | Uyilo oluphuculweyo lomamkeli |
I-GPS eyahlukileyo (i-DGPS)
| Icandelo | Inkcazo | Umsebenzi |
| Isitishi esisisiseko | Isikhululo esisisigxina esisekelwe emhlabeni | Ifumana imiqondiso yeGPS kwaye ibale idatha yolungiso |
| Rover | Iyunithi yeGPS ehambayo | Ifumana imiqondiso yeGPS kwaye isebenzise idatha yolungiso |
| Ikhowudi yePseudorange | Ikhowudi isasazwe ngeesathelayithi zeGPS | Uqikelelo lomgama wesathelayithi |
| Umlinganiselo weSigaba | Umlinganiselo ochanekileyo wezigaba zamaza ophethe | Yandisa ukuchaneka kwendawo |
| Idatha yoLungiso | Idatha ibalwe sisikhululo esisisiseko | Lungisa ubume beGPS uqikelelo ukulungisa iimpazamo |
I-Real-Time Kinematic (RTK) GPS
| Umba | Inkcazo |
| Ukuchaneka | Ukuchaneka kwenqanaba lesentimitha ngenxa yemilinganiselo echanekileyo. |
| Indlela yokulinganisa | Isebenzisa umlinganiselo wesigaba somthwali ukuchaneka okwandisiweyo. |
| Inkqubo engundoqo | Isisombululo esipheleleyo se-ambiguity yenani elichanekileyo lemijikelo yobude bobude. |
| Izilungiso zexesha lokwenyani | Ithembele ekuhambeni kwedatha eqhubekayo ngerediyo okanye ikhonkco lesathelayithi. |
Umahluko ophambili phakathi kwe-RTK GPS kunye ne-DGPS
| Izinto | I-RTK GPS | I-DGPS |
| iTechnique yokulinganisa | Umlinganiselo weSigaba soMthwali | Umlinganiselo weKhowudi |
| Inqanaba lokuchaneka | Inqanaba lemilimitha | Inqanaba lemitha |
| Isisombululo sokungacacanga | Kufuneka | Ayifuneki |
| Indlela Yokulungisa Imposiso | Ukwahluka kabini | Umahluko omnye |
Izinto eziluncedo kunye neMida ye-DGPS
I-GPS eyahlukileyo (i-DGPS) iyaziwa ngokuchaneka okungcono kune-GPS eqhelekileyo. Ngokuqhelekileyo inika umgangatho wemitha ukuchaneka. Oku kwenza ukuba i-DGPS ibe ntle kusetyenziso oluninzi apho ufuna indawo echanekileyo kodwa hayi ngokuthe ngqo ngokwenqanaba lesentimitha.
I-DGPS ikwalula ukuyisebenzisa kwaye isebenza kakuhle kwimozulu embi. Ithembeke ngakumbi kunezinye iinkqubo ezichanekileyo kwimozulu embi. Yiyo loo nto isetyenziswa kakhulu ekulimeni nasekuhambeni elwandle.
Kodwa, i-DGPS ine-downsides yayo. Ichaneke ngakumbi kune-GPS eqhelekileyo kodwa ayichanekanga njenge-Real-Time Kinematic (RTK) GPS. I-DGPS inokuchaphazeleka kukuphazamiseka kunye neengxaki zesignali, ezinokuthoba ukusebenza kwayo.
Izinto ezininzi zinokutshintsha indlela esebenza ngayo i-DGPS. Izinto ezifana nemozulu, amandla omqondiso, kunye nendlela idatha ecutshungulwa ngayo emva kokuba iqokelelwe. Imozulu inokubangela ukulibaziseka kwimiqondiso, nto leyo enokwenza idatha yendawo ingachanekanga kangako. Kwakhona, ukuba nesignali eyomeleleyo kwaye ezinzileyo ngundoqo kwizilungiso ezithembekileyo.
Ukuyisonga, i-DGPS inee-pluses ezinkulu ezifana nokuba kulula ukuyisebenzisa kunye nokusebenza kakuhle kwimiphumo eyahlukeneyo yemozulu. Kodwa, ikwanazo nezinye iiminus ezinkulu. I-DGPS lukhetho olulungileyo kodwa alugqibelelanga xa ufuna ukuchaneka komgangatho wemitha.
Izinto eziluncedo kunye neMida ye-RTK GPS
Ukusetyenziswa kwe-RTK GPS kunye ne-DGPS
| Isicelo | Iteknoloji | Iingenelo |
| Uvavanyo loMhlaba | I-RTK GPS | Ukuchaneka okuphezulu, ukuchaneka kwenqanaba lesentimitha |
| UVavanyo lweHydrographic | I-DGPS | Ukubekwa okuthembekileyo kwezifundo zaselwandle nezejoloji |
| UAV Navigation | I-RTK GPS | Imephu yomoya echanekileyo, ukujonga izityalo |
IiNdlela zexesha elizayo kuPhuculo lwe-GNSS oluChanekileyo
Ukuqukumbela
Eli nqaku lihlolisise umahluko phakathi kwe-RTK GPS kunye ne-DGPS. I-RTK GPS inikezela ngokuchaneka kwenqanaba lesentimitha kunye nezilungiso zexesha lokwenyani. I-DGPS, ngakolunye uhlangothi, ibonelela ngokuchaneka kwemitha engaphantsi, okwenza ukuba zilungele iiprojekthi ezahlukeneyo ze-geospatial.
I-RTK GPS ilungile kwiiprojekthi ezifuna ukuchaneka okuphezulu, njengokwakha kunye nezithuthi ezizimeleyo. I-DGPS ingcono kwimimandla efana nezolimo kunye nezaselwandle, apho ukuchaneka kungabalulekanga kangako.
Ukukhetha phakathi kwe-RTK GPS kunye ne-DGPS kuxhomekeke kwiimfuno zeprojekthi. I-RTK GPS yeyona nto ilungileyo kwimisebenzi efuna ukuchaneka okuthe ngqo kunye nedatha yexesha lokwenyani. I-DGPS ilungele iindawo ezinkulu ezifuna ukuchaneka okungaguqukiyo. Ukwazi amandla kunye nemida yomntu ngamnye kunceda iingcali ukuba zenze izigqibo ezingcono, ukuphucula ukusebenza kakuhle kunye nokuchaneka komsebenzi wabo.
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