{"id":753,"date":"2026-01-09T10:19:11","date_gmt":"2026-01-09T02:19:11","guid":{"rendered":"https:\/\/hsiang.cc\/?p=753"},"modified":"2026-01-05T10:23:20","modified_gmt":"2026-01-05T02:23:20","slug":"gnss%e7%ad%86%e8%a8%98%e8%a1%9b%e6%98%9f%e5%b0%8e%e8%88%aa%e7%b3%bb%e7%b5%b1%e7%9a%84%e5%8d%83%e7%a6%a7%e8%9f%b2%e5%95%8f%e9%a1%8crollover","status":"publish","type":"post","link":"https:\/\/hsiang.cc\/?p=753","title":{"rendered":"[GNSS\u7b46\u8a18]\u885b\u661f\u5c0e\u822a\u7cfb\u7d71\u7684\u5343\u79a7\u87f2\u554f\u984c(Rollover)"},"content":{"rendered":"<p>\u5168\u7403\u5c0e\u822a\u885b\u661f\u7cfb\u7d71(GNSS)\u662f\u73fe\u4ee3\u751f\u6d3b\u4e0d\u53ef\u6216\u7f3a\u7684\u57fa\u790e\u8a2d\u65bd,\u5f9e\u667a\u6167\u578b\u624b\u6a5f\u5b9a\u4f4d\u3001\u8eca\u8f1b\u5c0e\u822a\u5230\u7cbe\u5bc6\u6e2c\u91cf,\u90fd\u4ef0\u8cf4\u9019\u4e9b\u885b\u661f\u7cfb\u7d71\u3002\u7136\u800c,\u9019\u4e9b\u7cfb\u7d71\u5b58\u5728\u4e00\u500b\u9bae\u70ba\u4eba\u77e5\u7684\u6280\u8853\u9650\u5236\u2014\u2014<strong>\u9031\u6578\u7ffb\u8f49<\/strong>(Week 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1980\u5e741\u67086\u65e5\u5348\u591c(GPS\u6642\u9593\u7684\u8d77\u9ede)<\/li>\n<li><strong>\u9031\u6578\u6b04\u4f4d<\/strong>: \u4f7f\u752810\u4f4d\u5143(bit)\u4f86\u5132\u5b58\u9031\u6578<\/li>\n<li><strong>\u6700\u5927\u503c<\/strong>: 2\u00b9\u2070 = 1024\u9031<\/li>\n<li><strong>\u9031\u671f<\/strong>: 1024\u9031 \u00d7 7\u5929 \u2248 19.7\u5e74<\/li>\n<\/ul>\n<p>\u9019\u610f\u5473\u8457\u6bcf\u9694\u7d0419.7\u5e74,GPS\u7684\u9031\u6578\u8a08\u6578\u5668\u5c31\u6703\u5f9e1023\u7ffb\u8f49\u56de0,\u91cd\u65b0\u958b\u59cb\u8a08\u6578\u3002<\/p>\n<h3>\u6b77\u53f2\u4e0a\u7684GPS\u9031\u6578\u7ffb\u8f49\u4e8b\u4ef6<\/h3>\n<ol>\n<li><strong>\u7b2c\u4e00\u6b21\u7ffb\u8f49<\/strong>: 1999\u5e748\u670821\u65e5<\/li>\n<li><strong>\u7b2c\u4e8c\u6b21\u7ffb\u8f49<\/strong>: 2019\u5e744\u67086\u65e5<\/li>\n<li><strong>\u7b2c\u4e09\u6b21\u7ffb\u8f49<\/strong>: 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2006\u5e741\u67081\u65e5<\/li>\n<li>\u8a2d\u8a08\u4e0a\u66f4\u80fd\u907f\u514d\u8fd1\u671f\u7684\u7ffb\u8f49\u554f\u984c<\/li>\n<\/ul>\n<h2>\u9031\u6578\u7ffb\u8f49\u7684\u5f71\u97ff<\/h2>\n<h3>\u6f5b\u5728\u98a8\u96aa<\/h3>\n<ol>\n<li><strong>\u5b9a\u4f4d\u932f\u8aa4<\/strong>: \u63a5\u6536\u5668\u53ef\u80fd\u8a08\u7b97\u51fa\u932f\u8aa4\u7684\u4f4d\u7f6e<\/li>\n<li><strong>\u6642\u9593\u6233\u8a18\u932f\u8aa4<\/strong>: \u7cfb\u7d71\u6642\u9593\u53ef\u80fd\u8df3\u56de19.7\u5e74\u524d<\/li>\n<li><strong>\u7cfb\u7d71\u6545\u969c<\/strong>: \u4f9d\u8cf4GPS\u6642\u9593\u7684\u8a2d\u5099\u53ef\u80fd\u505c\u6b62\u904b\u4f5c<\/li>\n<li><strong>\u8cc7\u6599\u640d\u58de<\/strong>: \u6642\u9593\u6233\u8a18\u932f\u8aa4\u53ef\u80fd\u5c0e\u81f4\u8cc7\u6599\u8a18\u9304\u6df7\u4e82<\/li>\n<\/ol>\n<h3>\u53d7\u5f71\u97ff\u7684\u9818\u57df<\/h3>\n<ul>\n<li><strong>\u96fb\u4fe1\u7db2\u8def<\/strong>: \u57fa\u5730\u53f0\u540c\u6b65\u4f9d\u8cf4GPS\u6642\u9593<\/li>\n<li><strong>\u91d1\u878d\u4ea4\u6613<\/strong>: \u4ea4\u6613\u6642\u9593\u6233\u8a18\u7684\u6e96\u78ba\u6027\u81f3\u95dc\u91cd\u8981<\/li>\n<li><strong>\u96fb\u529b\u7cfb\u7d71<\/strong>: \u667a\u6167\u96fb\u7db2\u9700\u8981\u7cbe\u78ba\u7684\u6642\u9593\u540c\u6b65<\/li>\n<li><strong>\u4ea4\u901a\u904b\u8f38<\/strong>: \u822a\u7a7a\u3001\u822a\u6d77\u3001\u9435\u8def\u5c0e\u822a\u7cfb\u7d71<\/li>\n<li><strong>\u79d1\u5b78\u7814\u7a76<\/strong>: \u5730\u9707\u76e3\u6e2c\u3001\u5929\u6587\u89c0\u6e2c\u7b49\u7cbe\u5bc6\u61c9\u7528<\/li>\n<\/ul>\n<h2>\u5982\u4f55\u61c9\u5c0d\u9031\u6578\u7ffb\u8f49?<\/h2>\n<h3>\u88fd\u9020\u5546\u7684\u89e3\u6c7a\u65b9\u6848<\/h3>\n<ol>\n<li><strong>\u97cc\u9ad4\u66f4\u65b0<\/strong>: \u66f4\u65b0\u63a5\u6536\u5668\u8edf\u9ad4\u4ee5\u6b63\u78ba\u8655\u7406\u7ffb\u8f49<\/li>\n<li><strong>\u64f4\u5c55\u9031\u6578\u6b04\u4f4d<\/strong>: \u5728\u5167\u90e8\u4f7f\u7528\u66f4\u591a\u4f4d\u5143\u5132\u5b58\u9031\u6578<\/li>\n<li><strong>\u4ea4\u53c9\u9a57\u8b49<\/strong>: \u7d50\u5408\u591a\u500bGNSS\u7cfb\u7d71\u9032\u884c\u6642\u9593\u9a57\u8b49<\/li>\n<li><strong>\u53c3\u8003\u6642\u9593<\/strong>: \u4f7f\u7528\u5916\u90e8\u6642\u9593\u6e90\u9032\u884c\u6821\u6b63<\/li>\n<\/ol>\n<h3>\u4f7f\u7528\u8005\u61c9\u63a1\u53d6\u7684\u63aa\u65bd<\/h3>\n<p>\u2705 <strong>\u5b9a\u671f\u66f4\u65b0\u8a2d\u5099\u97cc\u9ad4<\/strong>: \u78ba\u4fddGNSS\u63a5\u6536\u5668\u4f7f\u7528\u6700\u65b0\u7248\u672c<\/p>\n<p>\u2705 <strong>\u6e2c\u8a66\u820a\u8a2d\u5099<\/strong>: \u6aa2\u67e52019\u5e74\u524d\u88fd\u9020\u7684\u8a2d\u5099\u662f\u5426\u53d7\u5f71\u97ff<\/p>\n<p>\u2705 <strong>\u5099\u63f4\u7cfb\u7d71<\/strong>: \u95dc\u9375\u61c9\u7528\u61c9\u6e96\u5099\u5099\u7528\u5c0e\u822a\u548c\u8a08\u6642\u7cfb\u7d71<\/p>\n<p>\u2705 <strong>\u76e3\u63a7\u7570\u5e38<\/strong>: \u6ce8\u610f\u8a2d\u5099\u662f\u5426\u51fa\u73fe\u6642\u9593\u6216\u4f4d\u7f6e\u7570\u5e38<\/p>\n<p>\u2705 <strong>\u8aee\u8a62\u88fd\u9020\u5546<\/strong>: \u5411\u8a2d\u5099\u4f9b\u61c9\u5546\u78ba\u8a8d\u662f\u5426\u6709\u7ffb\u8f49\u554f\u984c<\/p>\n<h2>2019\u5e74\u7ffb\u8f49\u4e8b\u4ef6\u7684\u7d93\u9a57<\/h2>\n<p>2019\u5e744\u67086\u65e5\u7684GPS\u9031\u6578\u7ffb\u8f49\u662f\u4e00\u6b21\u91cd\u8981\u7684\u6e2c\u8a66\u3002\u96d6\u7136\u5927\u591a\u6578\u73fe\u4ee3\u8a2d\u5099\u90fd\u9806\u5229\u5ea6\u904e,\u4f46\u4ecd\u6709\u4e00\u4e9b\u554f\u984c\u5831\u544a:<\/p>\n<ul>\n<li>\u90e8\u5206\u820a\u578bGPS\u63a5\u6536\u5668\u986f\u793a\u932f\u8aa4\u65e5\u671f<\/li>\n<li>\u67d0\u4e9b\u5de5\u696d\u63a7\u5236\u7cfb\u7d71\u51fa\u73fe\u6642\u9593\u7570\u5e38<\/li>\n<li>\u5c11\u6578\u5c0e\u822a\u8a2d\u5099\u9700\u8981\u624b\u52d5\u91cd\u7f6e<\/li>\n<\/ul>\n<p>\u9019\u6b21\u4e8b\u4ef6\u63d0\u9192\u6211\u5011,\u5373\u4f7f\u5728\u6578\u4f4d\u6642\u4ee3,\u5e95\u5c64\u7cfb\u7d71\u7684\u8a2d\u8a08\u9650\u5236\u4ecd\u53ef\u80fd\u9020\u6210\u5ee3\u6cdb\u5f71\u97ff\u3002<\/p>\n<h2>\u672a\u4f86\u5c55\u671b<\/h2>\n<h3>\u6280\u8853\u6539\u9032<\/h3>\n<p>\u73fe\u4ee3GNSS\u7cfb\u7d71\u6b63\u5728\u63a1\u7528\u66f4\u597d\u7684\u8a2d\u8a08:<\/p>\n<ul>\n<li><strong>\u66f4\u9577\u7684\u9031\u671f<\/strong>: \u4f7f\u7528\u66f4\u591a\u4f4d\u5143\u5132\u5b58\u6642\u9593\u8cc7\u8a0a<\/li>\n<li><strong>\u591a\u7cfb\u7d71\u6574\u5408<\/strong>: \u7d50\u5408GPS\u3001Galileo\u3001BeiDou\u3001GLONASS<\/li>\n<li><strong>\u667a\u6167\u6f14\u7b97\u6cd5<\/strong>: \u81ea\u52d5\u5075\u6e2c\u548c\u4fee\u6b63\u7ffb\u8f49\u554f\u984c<\/li>\n<\/ul>\n<h3>\u6a19\u6e96\u5316\u52aa\u529b<\/h3>\n<p>\u570b\u969b\u7d44\u7e54\u6b63\u5728\u63a8\u52d5:<\/p>\n<ul>\n<li>\u7d71\u4e00\u7684\u6642\u9593\u53c3\u8003\u6a19\u6e96<\/li>\n<li>\u66f4\u597d\u7684\u4e92\u64cd\u4f5c\u6027<\/li>\n<li>\u5f37\u5236\u6027\u7684\u7ffb\u8f49\u8655\u7406\u8981\u6c42<\/li>\n<\/ul>\n<h2>\u7d50\u8ad6<\/h2>\n<p>GNSS\u9031\u6578\u7ffb\u8f49\u662f\u4e00\u500b\u5178\u578b\u7684\u300c\u6280\u8853\u50b5\u300d\u554f\u984c\u2014\u2014\u65e9\u671f\u8a2d\u8a08\u7684\u9650\u5236\u5728\u5e7e\u5341\u5e74\u5f8c\u6210\u70ba\u6f5b\u5728\u98a8\u96aa\u3002\u96d6\u7136\u9019\u500b\u554f\u984c\u807d\u8d77\u4f86\u6280\u8853\u6027\u5f88\u5f37,\u4f46\u5b83\u63d0\u9192\u6211\u5011:<\/p>\n<ol>\n<li><strong>\u7cfb\u7d71\u8a2d\u8a08\u7684\u9060\u898b\u5f88\u91cd\u8981<\/strong>: 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