Ngaba uyazi ukuba zeziphi iinkqubo ezibandakanyiweyo kwi-GNSS?

Iingcamango ezi-5 eziphosakeleyo malunga I-Gnss (Iinkqubo zeSatellite zokuHamba ngeHlabathi)

❌ GNSS kunye IGPS ziyafana.

✅ I-GPS yenye yeenkqubo ezininzi ze-GNSS; i-GNSS ligama elibanzi eliquka zonke iinkqubo zesathelayithi yokuhambahamba kwihlabathi liphela.

❌ I-GNSS iluncedo kuphela ekuzulazuleni.

✅ I-GNSS ikwabalulekile ekusetyenzisweni kwexesha elichanekileyo kwezonxibelelwano, iibhanki, iigridi zamandla nokunye okuninzi.

❌ Udinga uqhagamshelo lwe-intanethi ukuze usebenzise i-GNSS.

✅ I-GNSS Umamkelis isebenza ngokuzimeleyo kwi-intanethi, ngaphandle kwaxa kufuneka ukulungiswa ukuphucula ukuchaneka kwedatha.

❌ Imiqondiso ye-GNSS ifumaneka naphi na eMhlabeni, nokuba ingaphantsi komhlaba, kwaye inamandla kwaye kulula ukuyibona.

✅ Imiqondiso ye-GNSS ibuthathaka kwaye inokuthintelwa lula zizithintelo ezifana nezakhiwo, iitonela, imithi, amagqabi axineneyo, okanye neemeko zomoya.

❌ I-GNSS ayinakusetyenziswa esibhakabhakeni.

✅ I-GNSS isetyenziselwa ukuhambahamba nakwi-Low Earth Orbit (LEO) kwi-spacecraft kunye neesathelayithi.

IiNkqubo zeSathelayithi zokuHamba ngeHlabathi (i-GNSS) ziye zatshintsha indlela esihamba ngayo nesihamba ngayo eMhlabeni. Ezi nkqubo ziye zaba yinxalenye ebalulekileyo yobomi bethu bemihla ngemihla, ukusuka ekusikhokheleni kwiihambo zendlela ukuya ekusincedeni sifumane indlela yethu ngexesha lemisebenzi yangaphandle. Kodwa ezi nkqubo zisebenza njani, kwaye zeziphi iinkqubo ezintandathu eziphambili ze-GNSS ezisebenzisa ubuchwepheshe bethu bokuhamba ngenqanawa?

Ukuze uqonde ukusebenza kwenkqubo ye-GNSS, kufuneka uqonde imigaqo esisiseko esemva kwayo. Iinkqubo ze-GNSS zibonelela ngeenkonzo zokubeka indawo, ukuhambahamba kunye nexesha kubasebenzisi kwihlabathi liphela ngokusebenzisa iinethiwekhi zesathelayithi. Ezi sathelayithi zihlala zithumela imiqondiso enokufunyanwa ngabamkeli be-GNSS, nto leyo ebavumela ukuba babale indawo yabo echanekileyo eMhlabeni.

Iinkqubo ezintandathu eziphambili ze-GNSS yiGPS yase-United States (iNkqubo yokuPosa iHlabathi), iGLONASS yaseRashiya (iNkqubo yeSatellite yokuHamba ngeHlabathi), iGalileo yaseManyano yaseYurophu, iBeidou yaseTshayina, iNavIC yaseIndiya kunye neQZSS (iNkqubo yeSatellite yeQuasi Zenith) evela eJapan. Nganye kwezi nkqubo isebenza ngemigaqo efanayo esisiseko kodwa ineempawu kunye nezakhono ezizodwa.

I-GPS yeyona nkqubo ye-GNSS idumileyo kwaye ineesathelayithi ezingama-24 ezijikeleza umhlaba. Imiqondiso ekhutshwa zezi sathelayithi inokufunyanwa yi-GPS receiver ukuze imisele indawo yomsebenzisi, isantya kunye nexesha. I-GLONASS eyenziwe eRashiya ilandela umgaqo ofanayo kodwa ineesathelayithi ezingama-24. I-Galileo yinkqubo ye-GNSS ye-European Union, eyenzelwe ukubonelela ngeenkqubo zokubeka ezizimeleyo nezichanekileyo zokusetyenziswa ngabantu bomkhosi.

Inkqubo yaseBeidou yaseTshayina ineesathelayithi ezingama-35 ezigubungela ihlabathi liphela kwaye yenzelwe ukubonelela ngeenkonzo zothutho, ezolimo kunye noncedo kwiintlekele. Inkqubo yeNavIC yaseIndiya ineesathelayithi ezisixhenxe, injongo yazo ephambili kukubonelela ngeenkonzo zokubeka indawo echanekileyo eIndiya nakwiindawo ezingqongileyo. Okokugqibela, inkqubo yeQZSS yaseJapan yenzelwe ukuphucula ukuchaneka nokuthembeka kweGPS kummandla weAsia-Oceania ngokusebenzisa indibaniselwano yeesathelayithi ze-geostationary kunye ne-tilt.

Ezi nkqubo zintandathu ze-GNSS zisebenza ngokudlulisa imiqondiso esuka kwiisathelayithi zazo ukuya kwi-GNSS receivers ezisemhlabeni. Emva koko i-receiver isebenzisa imiqondiso evela kwiisathelayithi ezininzi ukubala iindawo zazo ezichanekileyo ngenkqubo ebizwa ngokuba yi-trilateration. Ngokulinganisa ixesha elithathwayo ukuze imiqondiso ihambe ukusuka kwiisathelayithi ukuya kwi-receiver, i-receiver inokumisela umgama wayo ukusuka kwisathelayithi nganye ize ijikeleze indawo yayo eMhlabeni.

Ukongeza ekunikezeni iinkonzo zokubeka indawo kunye nokuhamba ngenqanawa, iinkqubo ze-GNSS zikwadlala indima ebalulekileyo kumashishini ahlukeneyo afana neenqwelo moya, ezolimo, uphando kunye nonxibelelwano. Zivumela ukulungelelaniswa kwexesha elichanekileyo kwenethiwekhi zonxibelelwano, ziququzelela iindlela zolimo ezisebenzayo ngokusebenzisa ezolimo ezichanekileyo, kwaye zixhasa ukuhamba ngeenqwelo moya kunye neenqanawa ngokukhuselekileyo nangokuchanekileyo.

Ngamafutshane, iinkqubo ezintandathu eziphambili ze-GNSS—i-GPS, i-GLONASS, i-Galileo, i-Beidou, i-NavIC, kunye ne-QZSS—zitshintshe indlela esihamba ngayo kunye nokuzibeka eMhlabeni. Ezi nkqubo zisebenza ngokusebenzisa iinethiwekhi zesathelayithi ukuhambisa imiqondiso kubamkeli be-GNSS, okuvumela abasebenzisi ukuba bamisele indawo yabo echanekileyo, isantya kunye nexesha. Njengoko itekhnoloji iqhubeka ihambela phambili, iinkqubo ze-GNSS ziya kudlala indima ebaluleke ngakumbi ekubumbeni ikamva leenkonzo zokuhamba ngenqwelomoya zehlabathi kunye nokubeka indawo.