Vs Active I-Passive GPS Antennas
I-Global Positioning System (GPS) izinhlelo zokuhamba zisebenza ngokuthola izibonakaliso ezivela kuma-satellites, futhi lokho akunakwenzeka ngaphandle kwe-antenna ethile. Isizathu ukuthi ngokuvamile awuboni noma iyiphi uphawu lwe-antenna uma ubheka i-GPS iyunithi zazo zinama-antenna ezifihliwe ngaphakathi, noma zakhiwe ngqo, icala.
Ngaphandle kwama-antenna akhiwe, amadivayisi amaningi we-GPS anakho nokukhetha ukusebenzisa i-antenna yangaphandle. Nakuba ngokuvamile kungadingeki ukufaka i-antenna yangaphandle ye-GPS, kunezimo lapho zingasiza khona.
Ubani ofuna i-Antenne ye-GPS?
Uma ngabe usebenzise i-GPS yesikhashana okwesikhashana, futhi awukaze uqaphele noma yikuphi ukulahlekelwa kwesignali noma izinkinga, ngakho-ke awudingi noma yiluphi uhlobo lwe-antenna yangaphandle. Ukuphela kweqiniso kuphela uma uhlela ukushayela endaweni ethile ongakaze ube khona ngaphambili, lapho izimo ezihlukile endaweni entsha zingenza i-antenna iyadingeka.
Uma, ngakolunye uhlangothi, uhlangabezane nezinkinga ezifana nokulahleka kwezignali noma ukungahambi kahle nge-GPS unit, khona-ke amathuba amnandi ukuthi i-antenna yangaphandle ye-GPS ingafaneleka inani lentengo.
Kwenzeka ngempela ezintweni ezimbili: ikhwalithi ye-antenna yangaphakathi lapho idivayisi yakho ye-GPS ifika nayo kanye nokuvimbela okuqondile okusebenzayo.
Ezinye izimo ezingase zibandakanye ukushintsha ukusuka kudivayisi ephathekayo ye-GPS ukuya ku-in-dash unit , noma ukuthenga idivayisi entsha ye-GPS ngokuqala. Ezimweni ezinjengalezi, zingakhokha ukubuza nxazonke uma umuntu endaweni enesibonakaliso noma izinkinga ze-GPS ngaphambi kokuba enze utshalomali.
Imiphumela Yezimiso Nokungaboni Kwamukelwa Kwe GPS
Amadivaysi ekuzulazula kwe-GPS asebenza ngokuthola izimpawu kusuka kwinethiwekhi yama-satellite ayingxenye yeSistimu Yokumiswa Kwamazwe Omhlaba. Ngokuthatha ukuqondisa nokubonisa amandla ama-satellite amaningi ku-akhawunti, idivayisi ye-GPS ikwazi ukubala ngesimo sayo sangempela ngesilinganiso esincane sephutha.
Uma idivaysi ye-GPS ingaboni ngokucacile esibhakabhakeni ngenxa yokuvinjelwa, kungenzeka ukuthi ayikwazi ukuthola izithameli zedilaythi ezwanele, ezingabangela ukwehluleka okuphelele ukusebenza noma ukuchithwa okungalungile. Lokhu kungabangelwa izinto ezinjengezakhiwo ezide, kodwa uphahla (futhi ngokuvamile amafasitela) wezimoto namaloli nakho kwenza ukuvimbela okungakwenyusa amandla esignali se-GPS.
Imiphumela yokuvimbela ingavinjelwa ngokubeka indawo ye-GPS efasiteleni, kodwa ezinye izimoto zinzima ukubhekana nazo kunabanye. Isibonelo, uphahla lwensimbi lwenza ngaphezulu kwe-RF isihlangu kunama-ragtops, futhi amafasitela agciniwe angabandakanya izinhlayiya ezincane zensimbi ezingavimbela nesignali ye-GPS.
Vs. zangaphakathi I-Antennas yangaphandle ye-GPS
Amadivayisi amaningi okuzulazula kwe-GPS afika nama-antenna angaphakathi asebenza kahle lapho evezwa ngombono ocacile, ongabonakali wesibhakabhaka.
Kodwa-ke, lawa antenna angaphakathi awanamakhono aphansi kunamaphenyana angaphandle amakhulu, okungenzeka kube okungahambi kahle noma okukhulisiwe. Endabeni ye-antenna ekhulisiwe yangaphandle, amandla esignali ye-GPS angacishe abe kabili ngokuhambisana ne-antenna engenamandla.
Uma uthola ukuthi ngezinye izikhathi i-GPS unit yakho ihluleka ukuthola isignali, noma uma kubonakala ingalungile ngezinye izikhathi, i-antenna yangaphandle iyovame ukulungisa inkinga. Kuyinto eshibhile futhi kulula ukuzama ukuhambisa i-unit ehamba phambili emotweni yakho kuqala, ngoba lokho kungasiza ekunciphiseni izinkinga nokuphazanyiswa, kodwa ungathola ukuthi isisombululo esifanele kuphela ukufaka i-antenna yangaphandle ekhulisiwe.
Passive Vs. Amplified GPS Antennas
Ama-antenna e-GPS angaphandle angaba noma ayenziwe. Ama-antennas asheshayo athola isignali ye-GPS futhi ayidlulisele kudivayisi ye-GPS yokuhamba, kuyilapho amayunithi asebenzayo afaka i-amplifier ene-powered eqinisa amandla esignali.
I-last is ngokuvamile ebiza kakhulu futhi enzima ukuyifaka, kodwa ingafakwa futhi kude kude ne-GPS iyunithi kune-antenna engakwazi ukuyenza. Ezimweni eziningi, i-antenna engekho kufanele ifakwe ngaphandle kwekhebula le-coaxia elingamamitha amathathu phakathi kwalo ne-GPS unit.
Njengoba ama-antenna asebenzayo angasetshenziswa kakhulu, afaneleka kangcono ukusetshenziswa kwezimoto ezinkulu.