Tlhaloso ea GPS Almanac
Haeba u kile ua ipotsa hore na ke hobane'ng ha ka linako tse ling mohala oa hau oa GPS a nka nako hore a itokisetse ho tsamaea ka mor'a hore a bule, ke hobane o lokela ho fumana boitsebiso bo itseng ba motheo ho phaella ho tšoara litokomane tsa GPS tsa satellite.
U ka 'na ua thulana le qalo e liehang haeba GPS e sa sebelisetsoe matsatsi kapa libeke, kapa e tsamaisitsoe sebaka se seholo ha e ntse e tima. Maemong ana, GPS e lokela ho ntlafatsa data ea almanac le ephemeris ebe e e boloka mohopolong.
Sebaka sa khale sa GPS se se nang almanac, nka nako e telele ho "boot" 'me u sebelise hobane e tlameha ho etsa lipatlisiso tse telele tsa sathalase. Leha ho le joalo, ts'ebetso ena e potlakile haholo ka hardware e ncha esita leha e se na almanac.
Nako e lekaneng ea ho bokella data ena ea GPS e bitsoa TTFF, e bolelang Time to First Fix , mme hangata e ka ba metsotso e 12 e telele.
Seo & # 39; s se kenyelelitsoe le Data Almanac Data
GPS almanac ke sete sa boitsebiso bo bong le bo bong ba GPS bo fetisetsang, 'me bo akarelletsa tlhahisoleseding ka boemo (bophelo bo botle) ba linaleli tsohle tsa GPS le li-constellation tse nang le boitsebiso bo pota-potiloeng ka li-satellite.
Ha moemeli oa GPS a e-na le lintlha tsa morao-rao tsa almanac ka mohopolo, a ka fumana melaetsa ea sathelaete mme a lekanyetsa boemo ba pele ka potlako.
Almanac ea GPS e boetse e kenyelletsa lintlha tsa boitsebiso ba mahora a GPS le data ho thusa ho lokisa tšitiso e bakiloeng ke bonono ba lefatše.
U ka kopitsa lintlha tsa almanac ho tloha ho mofuta oa ALM, AL3, le TXT lefapheng la websaete ea United States Coast Guard's Navigation Center.