Dab Tsi Lawv, Yuav Ua Li Cas Thiaj Tau, Thiab Yuav Ua Dab Tsi Lawv
Feem coob ntawm peb tsis tas yuav siv cov lej GPS ntau los ua kom zoo dua ntawm ntau qhov chaw pabcuam uas muaj rau peb. Peb tsuas sau cov npe chaw, los yog nias ntawm qhov kev tshawb nrhiav hauv Internet, lossis qhov chaw pib geotag, thiab peb cov khoom siv hluav taws xob saib xyuas qhov qub. Tab sis sab nraud sab nraum zoov-neeg, geocachers, pilots, sailors, thiab ntau dua feem ntau yuav tsum tau siv thiab to taub txog cov zauv GPS. Thiab qee yam ntawm peb cov technophiles xav tau cov haujlwm ua haujlwm ntawm GPS systems xwb tsis xav paub. Ntawm no yog koj phau ntawv taw qhia rau GPS tswj.
Lub ntiaj teb GPS system yeej tsis muaj ib qhov system tswj ntawm nws tus kheej. Nws siv "thaj chaw sib txuas" systems uas twb muaj ua ntej GPS, xws li:
Latitude thiab Longitude
GPS coordinates yog feem ntau qhia raws latitude thiab longitude. Cov txheej txheem no faib lub ntiaj teb mus rau hauv cov kab khiav tsheb, uas qhia txog deb npaum li cas sab qaum teb los yog sab qab teb ntawm qhov chaw nruab nrab yog qhov chaw, thiab cov kab kev sib txuas, uas qhia tias nyob deb npaum li cas sab hnub poob los yog sab hnub poob ntawm qhov chaw ua hauj lwm.
Hauv qhov system no, tus equator yog nyob rau ntawm 0 degrees latitude, nrog cov ncej nyob ntawm 90 degrees qaum thiab sab qab teb. Tus thawj meridian yog 0 degrees degrees, txuas sab hnub tuaj thiab sab hnub poob.
Raws li lub sijhawm no, qhov chaw nyob ntawm lub ntiaj teb daim ntawv qhia tau hais tias yog cov lej. Lub latitude thiab longitude ntawm lub teb chaws Ottoman State Tsev, piv txwv li, yog hais tias N40 ° 44.9064 ', W073 ° 59.0735'. Qhov chaw kuj yuav hais tau rau hauv ib hom ntawv nkaus xwb, ib qho: 40.748440, -73.984559. Nrog thawj tus naj npawb ntawm latitude, thiab tus naj npawb thib ob uas muaj qhov sib npaug (daim ntawv txhais lus rho tawm hais tias "sab hnub poob"). Ua numeric-tsuas, txhais tau tias ob txoj kev cim yog qhov feem ntau siv rau kev nkag mus rau cov haujlwm hauv GPS.
UTM
Cov cuab yeej GPS kuj yuav raug teem los qhia txoj haujlwm ntawm "UTM" lossis Universal Transverse Mercator. UTM tau tsim los siv nrog cov ntawv cim, pab tshem tawm cov teebmeem ntawm qhov distortion uas tsim los ntawm kev nkag ntawm lub ntiaj teb. UTM faib lub ntiaj teb mus rau hauv ib lub voj ntawm ntau lub aav. UTM tsis tshua siv tsawg tshaj latitude thiab longitude thiab zoo dua rau cov uas xav tau kev ua hauj lwm nrog cov ntawv cim.
Muab Kev Pab Qhia
Yog tias koj siv lub nrov GPS app , xws li MotionX, tau koj daim duab kos yog ib qho yooj yim. Cia li hu rau cov ntawv qhia zaub mov thiab xaiv "kuv txoj hauj lwm" kom pom koj lub koob thiab qhov ntev. Feem ntau cov handheld GPS cov cuab yeej siv yuav muab koj nrog ib qhov chaw los ntawm kev xaiv cov lus qhia yooj yim zoo li.
Nyob rau hauv Google Maps , tsuas yog tshuav-nias ntawm koj qhov chaw xaiv nyob rau hauv daim ntawv qhia, thiab lub GPS coordinates yuav tshwm nyob rau hauv lub thawv nqes-down ntawm sab laug sab laug ntawm qhov screen. Koj yuav pom cov leb lemitude thiab longitude rau qhov chaw. Koj tuaj yeem yooj yim thiab luam tau cov haujlwm no.
Kua Maps Maps tsis muab ib txoj hauv kev los mus nrhiav haujlwm GPS. Txawm li cas los xij, muaj pes tsawg tus pheej yig iPhone apps uas yuav ua txoj haujlwm rau koj. Kuv xav tias, txawm li cas los, mus nrog ib tug puv-featured sab nraum zoov GPS hiking app uas muab koj nrog coordinates rau tag nrho cov txiaj ntsim zoo thiab tag nrho.
Cov tsheb GPS hauv tsev feem ntau muaj cov khoom noj khoom haus uas qhia rau koj saib GPS coordinates. Los ntawm cov ntawv qhia zaub mov ntawm Garmin tsheb GPS , piv txwv li, tsuas yog xaiv "Cov cuab yeej" los ntawm cov ntawv qhia zaub mov tseem ceeb. Tom qab ntawd xaiv "Kuv Nyob Qhov Twg?" Qhov kev xaiv no yuav qhia koj txog koj txoj kev ua siab ntev thiab qhov ntev, qhov siab, qhov chaw nyob ze, thiab kev sib tshuam nyob ze.
Lub peev xwm nkag siab, tau, thiab tawm tswv yim GPS cov kev pab cuam kuj tseem ceeb rau cov khoom siv high-tech hunt uas hu ua geocaching. Feem ntau ntawm cov apps thiab cov cuab yeej tsim los txhawb kev geocaching cia koj xaiv thiab nrhiav caches tsis muaj kev tiv thaiv kev tswj, tab sis feem ntau kuj tso cai cov lus qhia ntawm cache qhov chaw.