P\u0159echod t\u00fddne GPS je ud\u00e1lost, p\u0159i kter\u00e9 satelitn\u00ed syst\u00e9m GPS vynuluje po\u010d\u00edtadlo pro \u010d\u00edslo t\u00fddne, a t\u00edm ovlivn\u00ed v\u00fdpo\u010det aktu\u00e1ln\u00edho data. K tomu doch\u00e1z\u00ed ka\u017ed\u00fdch 1024 t\u00fddn\u016f (p\u0159ibli\u017en\u011b 19,7 let). V\u011bt\u0161ina p\u0159ij\u00edma\u010d\u016f GPS se p\u0159izp\u016fsobila a m\u00e1 firmware pro spr\u00e1vn\u00fd v\u00fdpo\u010det \u010dasu a data UTC. Star\u0161\u00ed p\u0159ij\u00edma\u010de GPS nemus\u00ed toto vynulov\u00e1n\u00ed zvl\u00e1dat a mohlo by to m\u00edt p\u0159\u00edm\u00fd dopad na pou\u017e\u00edv\u00e1n\u00ed koordinovan\u00e9ho sv\u011btov\u00e9ho \u010dasu (UTC) a p\u0159\u00edpadn\u011b ovlivnit polohu hl\u00e1\u0161enou p\u0159ij\u00edma\u010dem GPS . <\/p>\n
Parametr \u201e\u010c\u00edslo t\u00fddne GPS je desetibitov\u00e1 hodnota v rozsahu 0\u20131023, kter\u00e1 se opakuje ka\u017ed\u00fdch 1024 t\u00fddn\u016f. T\u00fdden 0 za\u010dal v ned\u011bli 6. ledna 1980 v 00:00:00 UTC, tak\u017ee \u010d\u00edslo t\u00fddne se \u201ep\u0159esunulo z 1023 na 0 ve 23:59:47 UTC v sobotu 21. srpna 1999\u201c. K tomuto p\u0159esunut\u00ed \u010d\u00edsla t\u00fddne dojde znovu 6. dubna 2019. <\/p>\n
Ministerstvo vnit\u0159n\u00ed bezpe\u010dnosti USA vydalo memorandum s n\u00e1zvem \u201eAmeri\u010dt\u00ed vlastn\u00edci a provozovatel\u00e9 pou\u017e\u00edvaj\u00ed GPS k z\u00edsk\u00e1v\u00e1n\u00ed \u010dasu\u201c, kter\u00e9 m\u00e1 poskytnout pochopen\u00ed mo\u017en\u00fdch dopad\u016f tohoto probl\u00e9mu.<\/p>\n
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Akce: ACR p\u0159ijala opat\u0159en\u00ed k ov\u011b\u0159en\u00ed, \u017ee u na\u0161ich ned\u00e1vn\u00fdch produkt\u016f uveden\u00fdch v t\u00e9to certifikaci SIL NEBUDE<\/strong> doch\u00e1zet k probl\u00e9mu s funkc\u00ed GPS Week Rollover. Tyto produkty nejsou nep\u0159\u00edzniv\u011b ovlivn\u011bny funkc\u00ed GPS Week Rollover a budou fungovat tak, jak byly navr\u017eeny. Metoda ov\u011b\u0159en\u00ed byla stanovena prohl\u00e1\u0161en\u00edm dodavatele GPS p\u0159ij\u00edma\u010de, testov\u00e1n\u00edm produktu nebo po\u010d\u00e1te\u010dn\u00ed certifikac\u00ed produktu. <\/p>\n <\/p>\n