{"id":2517,"date":"2019-02-13T14:25:08","date_gmt":"2019-02-13T06:25:08","guid":{"rendered":"https:\/\/www.fly19.net\/?p=2517"},"modified":"2019-02-13T14:25:08","modified_gmt":"2019-02-13T06:25:08","slug":"gps%e5%91%a8%e6%95%b0%e7%bf%bb%e8%bd%acweek-rollover","status":"publish","type":"post","link":"https:\/\/www.fly19.net\/?p=2517","title":{"rendered":"GPS\u5468\u6570\u7ffb\u8f6cWeek Rollover"},"content":{"rendered":"\n<p>\u4eca\u5929\u542c\u8bf4GPS\u7684\u5468\u6570\u7ffb\u8f6c\u95ee\u9898\u201cGPS Week Number Rollover\u201d\u3002\u539f\u7406\u4e48\u5f88\u7b80\u5355\uff0c\u53d1\u5c04\u7684\u4fe1\u53f7\u91cc\u5468\u6570\u752810\u4f4d\u4e8c\u8fdb\u5236\u8868\u793a\uff0c\u53ea\u80fd\u8868\u793a0-1023\u5468\u3002\u6570\u5b8c\u4e86\u5c31\u8981\u4ece\u5934\u5f00\u59cb\u3002<\/p>\n\n\n\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\u65f6\u95f4\uff0c\u6211\u770b\u5230\u4e00\u4e9b\u6c11\u822a\u53d1\u7684\u6587\u4ef6\u5199\u7684\u90fd\u662f2019\u5e744\u67086\u65e5\u7ffb\u8f6c\uff0c\u8fd9\u5f88\u5bb9\u6613\u8ba9\u4eba\u8bef\u89e3\u4e3a4\u67086\u65e5\u96f6\u65f6\u7ffb\u8f6c\u3002\u5176\u5b9e\u5e94\u8be5\u662f\u57284\u67087\u65e5\u7684\u56fd\u9645\u65f60\u70b9\uff0c\u4ece1023\u53d8\u4e3a0\u7684\u4e00\u77ac\u95f4\u3002\u6211\u7528UNIX\u65f6\u95f4\u6233\u8ba1\u7b97\u4e86\u4e00\u4e0b\uff1a<\/p>\n\n\n\n<p>GPS\u7684\u8d77\u59cb\u65e5\u671f\u662f1980-01-06 00:00:00UTC \u3002UNIX\u65f6\u95f4\u6233\u662f315964800\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e00\u6b21\u7ffb\u8f6c\u53d1\u751f\u57281024\u5468\u540e\uff0c\u5c31\u662f315964800 + 1024 \u00d7 604800 = 935280000\u3002\u4ee3\u88681999-08-22 00:00:00UTC\u3002<\/p>\n\n\n\n<p>\u7b2c\u4e8c\u6b21\u7ffb\u8f6c\u53d1\u751f\u5728935280000 + 1024 \u00d7 604800 = 1554595200\u3002\u4ee3\u88682019-04-07 00:00:00UTC\u3002<strong>\u6362\u5728\u5317\u4eac\u65f6\u95f4\u5c31\u662f2019-04-07 08:00:00<\/strong><\/p>\n\n\n\n<p>\u6211\u731c\u60f3\u5bf9\u4e8e\u5b9a\u4f4d\u5e94\u8be5\u6ca1\u4ec0\u4e48\u5f71\u54cd\uff08\u6211\u731c\u8981\u6709\u5f71\u54cd\u4e5f\u662f\u5728\u7ffb\u8f6c\u77ac\u95f4\uff09\uff0c\u6bd5\u7adf\u98de\u673a\u4e0a\u7684\u4f4d\u7f6e\u66f4\u65b0\uff0cGPS\u53ea\u662f\u6570\u636e\u6e90\u4e4b\u4e00\uff0c\u65e0\u7ebf\u7535\u5b9a\u4f4d\u548c\u60ef\u5bfc\u90fd\u8fd8\u80fd\u53d1\u6325\u4f5c\u7528\u3002<\/p>\n\n\n\n<p>\u53ef\u80fd\u8fd8\u6709\u5f71\u54cd\u7684\u662f\u5bfc\u822a\u6570\u636e\u5e93\u7248\u6709\u6548\u671f\uff0c\u6211\u770bFCOM\u4e0a\u5199\uff0c\u5982\u679c\u5bfc\u822a\u6570\u636e\u5e93\u7684\u6709\u6548\u65e5\u671f\u4e0e\u59cb\u7ec8\u8f93\u5165\u7684\u65e5\u671f\u4e0d\u4e00\u81f4\uff0c\u5c31\u4f1a\u8df3\u51faNAV DATA OUT OF DATE\u544a\u8b66\u3002<\/p>\n\n\n\n<p>\u53e6\u4e00\u4e2a\u9700\u8981\u5c0f\u5fc3\u7684\u662f\u6570\u636e\u94fe\uff0c\u5982\u679c\u98de\u673a\u7684\u65f6\u95f4\u771f\u7684\u53d8\u6210\u4e861999\u5e74\u751a\u81f31980\u5e74\uff0c\u4e0a\u884c\u548c\u4e0b\u884c\u7684\u6570\u636e\u94fe\u662f\u5426\u80fd\u6b63\u5e38\u5de5\u4f5c\u5462\uff1f\uff08\u6211\u731c\u73b0\u4ee3\u7684\u98de\u673a\u5e94\u8be5\u4e0d\u4f1a\u8fd9\u4e48\u7834\uff09<\/p>\n\n\n\n<p>\u300a<a href=\"https:\/\/www.fly19.net\/wp-content\/uploads\/2019\/02\/Memorandum_on_GPS_2019.pdf\">MEMORANDUM FOR U.S. OWNERS AND OPERATORS USING GPS TO OBTAIN UTC TIME<\/a>\u300b\u53ef\u4f9b\u53c2\u8003\u3002<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u4eca\u5929\u542c\u8bf4GPS\u7684\u5468\u6570\u7ffb\u8f6c\u95ee\u9898\u201cGPS Week Number Rollover\u201d &hellip; <a href=\"https:\/\/www.fly19.net\/?p=2517\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,27],"tags":[],"class_list":["post-2517","post","type-post","status-publish","format-standard","hentry","category-20","category-27"],"_links":{"self":[{"href":"https:\/\/www.fly19.net\/index.php?rest_route=\/wp\/v2\/posts\/2517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fly19.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fly19.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fly19.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fly19.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2517"}],"version-history":[{"count":1,"href":"https:\/\/www.fly19.net\/index.php?rest_route=\/wp\/v2\/posts\/2517\/revisions"}],"predecessor-version":[{"id":2519,"href":"https:\/\/www.fly19.net\/index.php?rest_route=\/wp\/v2\/posts\/2517\/revisions\/2519"}],"wp:attachment":[{"href":"https:\/\/www.fly19.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fly19.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fly19.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}