GPS Almanac Inkcazo
Ukuba uye wakha wazibuza ukuba kutheni ngezinye iinkcukacha i- GPS yakho isamkela ixesha elithile ukuba ilungele ukuhamba emva kokuba ivuliwe, kuba kukuba kufuneka ifumane ulwazi olusisiseko ngaphezu kokubamba izibonakaliso zeSpeet.
Unokuhlangabezana nesiqalo esicothayo ukuba i-GPS yakho ingasetyenziswanga iintsuku okanye iiveki, okanye ithathelwe umgama obalulekileyo xa iphelile. Kule meko, i-GPS kufuneka ihlaziye idatha yayo ye- almanac kunye ne- ephemeris uze uyigcine kwimemori.
I-GPS ye-hardware endala engenayo i-almanac, thabatha ixesha elide ukuba "uqalise" kwaye isetyenziswe kuba kufuneka lenze uphando olude lweSatellite. Nangona kunjalo, le nkqubo ihamba ngokukhawuleza kwi-hardware entsha, nokuba ingaba i-almanac.
Isixa esithathayo ukuqokelela le data ye-GPS ibizwa ngokuba yiTTFF, oku kuthetha ixesha lokuQala ukuQala , kwaye ngokuqhelekileyo lijikeleze imizuzu engama-12 ubude.
Yintoni & # 39; efakwe kwi-GPS Almanac Data
I-almanac yeGPS yiseti yedatha ehamba nayo yonke i-GPS yesatellite, kwaye ibandakanya ulwazi malunga ne-state (impilo) ye-GPS ye-constellation yonke ye-satellite kunye nedatha ebanzi kwi-orbit nganye.
Xa ummkeli we-GPS ene-almanac ekhoyo kwimemori, unokufumana izibonakaliso ze-satellite kunye nokugqiba isikhundla sokuqala ngokukhawuleza.
I-almanac yeGPS ikwabandakanya idatha ye-GPS yamanqaku okulinganisa kunye nedatha yokunceda ukulungisa ukuphazamiseka okubangelwa yi-ionosphere.
Unokukhuphela idatha ye-almanac ukusuka kwifom ye-ALM, AL3, ne-TXT ifayile kwi-website ye-United States yoLondolozo lwe-Coast Guard Navigation Center.