Amayunithi we-GPS asebenzisa ukuhanjiswa ukukhomba isikhundla esiphakamweni somhlaba
Ama-Global Positioning System amayunithi asebenzisa isisombululo sesibalo sokuhlukaniswa ukuze anqume isikhundla somsebenzisi, isivinini, nokuphakama. Amayunithi we-GPS athola njalo ahlaziye isignali zemisakazo evela kuma satellite amaningana e-GPS. Basebenzisa lezi zibonakaliso ukubala ibanga eliqondile noma ibanga ku-satellite ngayinye elandelwayo.
Indlela Ukuqothulwa Kusebenza Kanjani
Ukuqothulwa yiyona nguqulo eyinkimbinkimbi yokuxolisa. Idatha evela kwi-satellite eyodwa ibonisa isimo endaweni enkulu yomhlaba. Ukwengeza idatha kusuka ku-satellite yesibili kunciphisa isimo esiya esifundeni lapho izinhlangothi ezimbili zedatha yesathelayithi zihamba khona. Ukwengeza idatha kusuka kwisitetjhi sesithathu kunika isikhundla esinembile, futhi wonke amayunithi we-GPS adinga ama-satellite amathathu ukuze abekwe kahle. Idatha evela ku-satellite yesine-noma ngaphezulu kokuthuthukiswa kweziphuphutheki ezine futhi inquma ukuphakama okunembile noma, uma kwenzeka izindiza, ukuphakama. Abamukeli be-GPS bavame ukulandelela ama-satellite amane kuya kwayisishiyagalombili noma ngaphezulu nangesikhathi esisodwa futhi basebenzise izilwanyana ukuze bahlaziye ulwazi.
UMnyango Wezokuvikela wase-United States ugcina ama-satellite angu-24 ahambisa idatha emhlabeni wonke. Idivayisi yakho ye-GPS ingakwazi ukuxhumana nokungenani ama-satellite amane kungakhathaliseki ukuthi ukhona emhlabeni, ngisho nasezindaweni ezenziwe ngezinkuni noma emadolobheni amakhulu anezakhiwo ezide. I-satellite ngayinye ijikeleza umhlaba kabili ngosuku, ukuthumela njalo izimpawu emhlabeni, endaweni engamamitha angu-12 500. Ama-satellite agijima ngamandla we-solar futhi abe namabhethri wokusekela.
Umlando we-GPS
I-GPS yasungulwa ngo-1978 ngokuqaliswa kwe-satellite yokuqala. Ilawulwa futhi isetshenziselwa kuphela amasosha kuze kube ngawo-1980. Inqola egcwele yama-satellite angu-24 alawulwa yi-US ayengekho endaweni ka-1994.
Uma i-GPS ihluleka
Uma isistimu ye-GPS ithola idatha engaphelele yethelayithi ngoba ayikwazi ukulandelela ama-satellite anele, ukushabalalisa kwehluleka. Umshayeli wesaziso uzisa umsebenzisi kunokuba anikeze ulwazi olungalungile lwesikhundla. Ama-Satellite ngezinye izikhathi ahluleka okwesikhashana ngoba izimpawu zihamba kancane kakhulu ngenxa yezici ku-troposphere nase-ionosphere. Izimpawu zingase ziphinde ziqede izindlela ezithile nezakhiwo emhlabeni, kubangele iphutha lokuthutha.