Tanthauzo la GPS Almanac
Ngati munayamba mwadzifunsapo kuti nthawi yanji GPS yanu yamagetsi imatenga nthawi kuti ikonzekere kuyendayenda itatha, ndi chifukwa chakuti iyenera kupeza mfundo zina zowonjezera kuphatikizapo kulanda chizindikiro cha GPS.
Mwina mungakumane ndi kuyamba kochepa ngati GPS yanu yasagwiritsidwa ntchito kwa masiku kapena masabata, kapena yayendetsedwa mtunda wochepa pamene itsekedwa. Pazochitikazi, GPS iyenera kusinthira deta yake ya almanac ndi ephemeris ndikuisungira kukumbukira.
Galamala yakale ya GPS yomwe ilibe almanac, mutenge nthawi yaitali kuti "yambani" ndipo mugwiritse ntchito chifukwa imayenera kufufuza nthawi yaitali. Komabe, ndondomekoyi imapita mofulumira mu hardware yatsopano ngakhale alibe almanac.
Nthawi yonse yomwe imatengera kusonkhanitsa galimotoyi imatchedwa TTFF, yomwe imatanthawuza nthawi yoyamba , ndipo nthawi zambiri imakhala pafupi maminiti khumi ndi awiri.
Zomwe zili M'gulu la GPS Almanac Data
GPS almanac ndi ndondomeko ya deta iliyonse ya GPS yomwe imatumiza, ndipo imaphatikizapo zambiri zokhudza boma (zaumoyo) za magetsi onse a GPS ndi ma data ozungulira pamtunda uliwonse wa satana.
Pamene wolandira GPS ali ndi deta yamakono yamakono akumbukira, amatha kupeza zizindikiro za satelesi ndikupeza malo oyambirira mwamsanga.
Ndalama ya GPS imaphatikizapo deta yolumikizira GPS ndi data kuti zithetse kusokoneza kumene kumayambitsa zamoyo.
Mungathe kukopera deta ya almanac kuchokera ku ma fayilo a ALM, AL3, ndi TXT kuchokera ku webusaiti ya United States Coast Guard's Navigation Center.