{"id":68,"date":"2026-03-01T16:28:24","date_gmt":"2026-03-01T08:28:24","guid":{"rendered":"https:\/\/hpu.gv.uy\/?p=68"},"modified":"2026-03-01T17:00:58","modified_gmt":"2026-03-01T09:00:58","slug":"gps%e6%b5%8b%e9%87%8f%e5%8e%9f%e7%90%86%e5%8f%8a%e5%85%b6%e5%ba%94%e7%94%a8-p21-22%e5%85%a8%e7%90%83%e5%ae%9a%e4%bd%8d%e7%b3%bb%e7%bb%9f%e7%9a%84%e7%bb%84%e6%88%90%e5%8f%8a%e4%bf%a1%e5%8f%b7%e7%bb%93","status":"publish","type":"post","link":"https:\/\/hpu.gv.uy\/?p=68","title":{"rendered":"GPS\u6d4b\u91cf\u539f\u7406\u53ca\u5176\u5e94\u7528 p21 22\u5168\u7403\u5b9a\u4f4d\u7cfb\u7edf\u7684\u7ec4\u6210\u53ca\u4fe1\u53f7\u7ed3\u6784\uff08\u516d\uff09"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u76ee\u5f55<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"#1-ca-\u7801\u7c97\u7801\u6355\u83b7\u7801\u7684\u4ea7\u751f\u539f\u7406\u4e0e\u7ed3\u6784-content-0000\">1. C\/A \u7801\uff08\u7c97\u7801\/\u6355\u83b7\u7801\uff09\u7684\u4ea7\u751f\u539f\u7406\u4e0e\u7ed3\u6784<\/a><\/li>\n\n\n\n<li><a href=\"#2-ca-\u7801\u7684\u7279\u6027\u4e0e\u5e94\u7528-content-0242\">2. C\/A \u7801\u7684\u7279\u6027\u4e0e\u5e94\u7528<\/a><\/li>\n\n\n\n<li><a href=\"#3-p-\u7801\u7cbe\u7801\u7684\u7279\u6027\u4e0e\u4ea7\u751f-content-0358\">3. P \u7801\uff08\u7cbe\u7801\uff09\u7684\u7279\u6027\u4e0e\u4ea7\u751f<\/a><\/li>\n\n\n\n<li><a href=\"#4-p-\u7801\u7684\u4fdd\u5bc6\u6027\u4e0e-as-\u653f\u7b56\u53cd\u7535\u5b50\u6b3a\u9a97-content-0658\">4. P \u7801\u7684\u4fdd\u5bc6\u6027\u4e0e AS \u653f\u7b56\uff08\u53cd\u7535\u5b50\u6b3a\u9a97\uff09<\/a><\/li>\n\n\n\n<li><a href=\"#5-gps-\u73b0\u4ee3\u5316l2c-\u4e0e-l5-\u4fe1\u53f7-content-1040\">5. GPS \u73b0\u4ee3\u5316\uff1aL2C \u4e0e L5 \u4fe1\u53f7<\/a><\/li>\n\n\n\n<li><a href=\"#6-z-\u8ddf\u8e2a\u6280\u672f\u4e0e\u6c11\u7528\u7b56\u7565-content-1446\">6. Z \u8ddf\u8e2a\u6280\u672f\u4e0e\u6c11\u7528\u7b56\u7565<\/a><\/li>\n\n\n\n<li><a href=\"#ai-\u603b\u7ed3\">AI \u603b\u7ed3<\/a><\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">1. C\/A \u7801\uff08\u7c97\u7801\/\u6355\u83b7\u7801\uff09\u7684\u4ea7\u751f\u539f\u7406\u4e0e\u7ed3\u6784 <a href=\"https:\/\/www.bilibili.com\/video\/BV1ia4y1s7sj_p21?t=0\" target=\"_blank\" rel=\"noreferrer noopener\">\u539f\u7247 @ 00:00<\/a>*<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\/A \u7801\uff08Coarse\/Acquisition Code\uff0c\u7c97\u7801\u6216\u6355\u83b7\u7801\uff09\u662f GPS \u4fe1\u53f7\u4e2d\u7ed3\u6784\u6700\u7b80\u5355\u7684\u4e00\u79cd\u6d4b\u8ddd\u7801\uff0c\u4e3b\u8981\u7528\u4e8e\u4fe1\u53f7\u7684\u521d\u6b65\u6355\u83b7\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Screenshot-[00:11]<\/em><\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>\u622a\u56fe\u63d0\u793a<\/strong>\uff1a\u6b64\u5904\u7684\u677f\u4e66\u6216\u56fe\u793a\u901a\u5e38\u5c55\u793a C\/A \u7801\u53d1\u751f\u5668\u7684\u7535\u8def\u539f\u7406\u56fe\uff0c\u91cd\u70b9\u5728\u4e8e\u4e24\u4e2a\u79fb\u4f4d\u5bc4\u5b58\u5668\uff08G1 \u548c G2\uff09\u7684\u5e76\u5217\u7ed3\u6784\u3002<\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\">1. <strong>\u7ebf\u6027\u53cd\u9988\u79fb\u4f4d\u5bc4\u5b58\u5668 (LFSR)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\/A \u7801\u7531\u4e24\u4e2a 10 \u7ea7\u7684\u7ebf\u6027\u53cd\u9988\u79fb\u4f4d\u5bc4\u5b58\u5668\u4ea7\u751f\uff0c\u901a\u5e38\u6807\u8bb0\u4e3a <strong>G1<\/strong> \u548c <strong>G2<\/strong>\u3002<\/li>\n\n\n\n<li><strong>\u4ea7\u751f\u539f\u7406<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5229\u7528\u79fb\u4f4d\u5bc4\u5b58\u5668\u7684\u7279\u5b9a\u62bd\u5934\uff08Tap\uff09\u5185\u5bb9\u8fdb\u884c <strong>\u6a212\u76f8\u52a0 (Modulo-2 Addition)<\/strong>\u3002<\/li>\n\n\n\n<li>\u8fd0\u7b97\u7ed3\u679c\u53cd\u9988\u56de\u5230\u5bc4\u5b58\u5668\u7684\u7b2c\u4e00\u7ea7\uff0c\u5f62\u6210\u5faa\u73af\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">2. <strong>\u7279\u5f81\u591a\u9879\u5f0f (Characteristic Polynomial)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7535\u8def\u7ed3\u6784\u53ef\u4ee5\u7528\u7279\u5f81\u591a\u9879\u5f0f\u6765\u8868\u793a\uff0c\u8fd9\u6bd4\u753b\u590d\u6742\u7684\u7535\u8def\u56fe\u66f4\u7b80\u6d01\u3002<\/li>\n\n\n\n<li><strong>G1 \u5bc4\u5b58\u5668\u793a\u4f8b<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u89c6\u9891\u4e2d\u63d0\u5230\u5c06\u7b2c 3 \u7ea7\u548c\u7b2c 10 \u7ea7\u7684\u5185\u5bb9\u8fdb\u884c\u6a212\u76f8\u52a0\uff0c\u53cd\u9988\u81f3\u7b2c 1 \u7ea7\u3002<\/li>\n\n\n\n<li><em>Screenshot-[01:14]<\/em> <strong>\u622a\u56fe\u63d0\u793a<\/strong>\uff1a\u5c55\u793a\u79fb\u4f4d\u5bc4\u5b58\u5668\u7684\u5177\u4f53\u53cd\u9988\u8fde\u63a5\u65b9\u5f0f\uff08\u4f8b\u5982\u7b2c3\u7ea7\u548c\u7b2c10\u7ea7\u8fde\u63a5\u5230\u6a212\u52a0\u6cd5\u5668\uff09\uff0c\u8fd9\u662f\u7406\u89e3\u591a\u9879\u5f0f\u7269\u7406\u5b9e\u73b0\u7684\u76f4\u89c2\u4f9d\u636e\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">3. <strong>Gold \u7801 (Gold Code) \u7684\u751f\u6210<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>G2 \u5bc4\u5b58\u5668\u7684\u590d\u6742\u6027<\/strong>\uff1aG2 \u7684\u53cd\u9988\u66f4\u4e3a\u590d\u6742\uff0c\u6d89\u53ca\u7b2c 2\u30013\u30016\u30018\u30019\u300110 \u7ea7\u5185\u5bb9\u7684\u6a212\u76f8\u52a0\u3002<\/li>\n\n\n\n<li><strong>C\/A \u7801\u7684\u5408\u6210<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u9996\u5148\u5206\u522b\u4ea7\u751f G1 \u5e8f\u5217\u548c G2 \u5e8f\u5217\u3002<\/li>\n\n\n\n<li>\u5c06 G1 \u5e8f\u5217\u4e0e G2 \u5e8f\u5217\uff08\u7ecf\u8fc7\u76f8\u4f4d\u5e73\u79fb\u540e\uff09\u518d\u6b21\u8fdb\u884c\u6a212\u76f8\u52a0\u3002<\/li>\n\n\n\n<li>\u6700\u7ec8\u751f\u6210\u7684\u5e8f\u5217\u5373\u4e3a <strong>Gold \u7801<\/strong>\uff08C\/A \u7801\u5c5e\u4e8e Gold \u7801\u65cf\uff09\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6570\u5b66\u8868\u8fbe<\/strong>\uff1a<br>C\/A(t) = G1(t) \\oplus G2(t-\\tau) \uff08\u5176\u4e2d \\oplus \u8868\u793a\u6a212\u76f8\u52a0\uff09<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">2. C\/A \u7801\u7684\u7279\u6027\u4e0e\u5e94\u7528 <a href=\"https:\/\/www.bilibili.com\/video\/BV1ia4y1s7sj_p21?t=162\" target=\"_blank\" rel=\"noreferrer noopener\">\u539f\u7247 @ 02:42<\/a>*<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">1. <strong>\u7ed3\u6784\u7279\u70b9<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>C\/A \u7801\u662f GPS \u6d4b\u8ddd\u7801\u4e2d\u7ed3\u6784\u6700\u7b80\u5355\u7684\u4e00\u79cd\u3002<\/li>\n\n\n\n<li>\u901a\u5e38\u4f5c\u4e3a\u6559\u5b66\u793a\u4f8b\u6765\u7406\u89e3\u6d4b\u8ddd\u7801\u7684\u4ea7\u751f\u673a\u5236\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">2. <strong>\u7801\u957f\u4e0e\u5468\u671f<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7801\u957f\u76f8\u5bf9\u8f83\u77ed\uff0c\u5468\u671f\u4e3a <strong>1 \u6beb\u79d2 (ms)<\/strong>\u3002<\/li>\n\n\n\n<li>\u5305\u542b <strong>1023<\/strong> \u4e2a\u7801\u5143\uff08Chips\uff09\u3002<\/li>\n\n\n\n<li>\u8fd9\u79cd\u77ed\u5468\u671f\u7279\u6027\u4f7f\u5f97\u63a5\u6536\u673a\u80fd\u591f\u5feb\u901f\u641c\u7d22\u548c\u6355\u83b7\u4fe1\u53f7\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">3. P \u7801\uff08\u7cbe\u7801\uff09\u7684\u7279\u6027\u4e0e\u4ea7\u751f <a href=\"https:\/\/www.bilibili.com\/video\/BV1ia4y1s7sj_p21?t=238\" target=\"_blank\" rel=\"noreferrer noopener\">\u539f\u7247 @ 03:58<\/a>*<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">P \u7801\uff08Precision Code\uff0c\u7cbe\u7801\uff09\u76f8\u6bd4 C\/A \u7801\u5177\u6709\u663e\u8457\u4e0d\u540c\u7684\u7279\u6027\uff0c\u4e3b\u8981\u7528\u4e8e\u9ad8\u7cbe\u5ea6\u5b9a\u4f4d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1. <strong>\u7801\u7387\u4e0e\u7cbe\u5ea6<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u7801\u7387<\/strong>\uff1aP \u7801\u7684\u7801\u7387\u662f C\/A \u7801\u7684 10 \u500d\uff0c\u5373 <strong>10.23 Mbps<\/strong>\u3002<\/li>\n\n\n\n<li><strong>\u7801\u5bbd<\/strong>\uff1aP \u7801\u7684\u4e00\u4e2a\u7801\u5143\u5bbd\u5ea6\u7ea6\u4e3a C\/A \u7801\u7684 1\/10\u3002\n<ul class=\"wp-block-list\">\n<li>C\/A \u7801\u7801\u5143\u957f\u5ea6 \\approx 293 \u7c73\u3002<\/li>\n\n\n\n<li>P \u7801\u7801\u5143\u957f\u5ea6 \\approx 29.3 \u7c73\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6d4b\u8ddd\u7cbe\u5ea6<\/strong>\uff1a\u7531\u4e8e\u7801\u5143\u66f4\u7a84\uff0c\u6d4b\u91cf\u7cbe\u5ea6\u901a\u5e38\u8bbe\u4e3a\u7801\u5143\u5bbd\u5ea6\u7684 1% \u5de6\u53f3\uff0c\u56e0\u6b64 P \u7801\u7684\u6d4b\u8ddd\u7cbe\u5ea6\uff08\u7ea6 0.29 \u7c73\uff09\u8fdc\u9ad8\u4e8e C\/A \u7801\uff08\u7ea6 2.9 \u7c73\uff09\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">2. <strong>\u8f7d\u6ce2\u8c03\u5236<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P \u7801\u540c\u65f6\u8c03\u5236\u5728 <strong>L1<\/strong> \u548c <strong>L2<\/strong> \u4e24\u4e2a\u8f7d\u6ce2\u9891\u7387\u4e0a\u3002<\/li>\n\n\n\n<li><strong>\u53cc\u9891\u4f18\u52bf<\/strong>\uff1a\u5229\u7528\u4e24\u4e2a\u4e0d\u540c\u9891\u7387\uff08L1, L2\uff09\uff0c\u53ef\u4ee5\u901a\u8fc7\u7ebf\u6027\u7ec4\u5408\u6d88\u9664 <strong>\u7535\u79bb\u5c42\u5ef6\u8fdf (Ionospheric Delay)<\/strong> \u8bef\u5dee\u3002<\/li>\n\n\n\n<li><em>\u6ce8\u610f<\/em>\uff1a\u65e9\u671f\u7684 C\/A \u7801\u4ec5\u8c03\u5236\u5728 L1 \u4e0a\uff0c\u65e0\u6cd5\u76f4\u63a5\u5229\u7528\u53cc\u9891\u6d88\u9664\u7535\u79bb\u5c42\u8bef\u5dee\uff0c\u8fd9\u662f\u9650\u5236\u6c11\u7528\u7cbe\u5ea6\u7684\u4e3b\u8981\u539f\u56e0\u4e4b\u4e00\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">3. <strong>\u5468\u671f\u6781\u957f\u4e0e\u6355\u83b7\u56f0\u96be<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5468\u671f<\/strong>\uff1aP \u7801\u7684\u5468\u671f\u975e\u5e38\u957f\uff0c\u7ea6\u4e3a <strong>7 \u5929<\/strong>\uff08\u5b9e\u9645\u662f 267 \u5929\u957f\u5e8f\u5217\u7684\u4e00\u90e8\u5206\uff0c\u6bcf\u9897\u536b\u661f\u5206\u914d 7 \u5929\u7684\u7247\u6bb5\uff09\u3002<\/li>\n\n\n\n<li><strong>\u6355\u83b7\u6311\u6218<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>1 \u79d2\u949f\u5305\u542b 1000 \u4e07\u4e2a\u7801\u5143\uff0c\u4e14\u63a5\u6536\u673a\u65f6\u949f\u4e0e\u536b\u661f\u65f6\u949f\u5b58\u5728\u8bef\u5dee\u3002<\/li>\n\n\n\n<li>\u82e5\u76f4\u63a5\u641c\u7d22 P \u7801\uff0c\u641c\u7d22\u8303\u56f4\u6781\u5927\uff0c\u8017\u65f6\u6781\u957f\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u89e3\u51b3\u65b9\u6848<\/strong>\uff1a\u63a5\u6536\u673a\u5fc5\u987b\u5148\u6355\u83b7 C\/A \u7801\uff08\u901a\u8fc7 HOW \u5b57\u4e2d\u7684 Z \u8ba1\u6570\uff09\uff0c\u83b7\u5f97\u65f6\u95f4\u540c\u6b65\u4fe1\u606f\u540e\uff0c\u518d\u5f15\u5bfc\u6355\u83b7 P \u7801\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">4. <strong>P \u7801\u4ea7\u751f\u5668\u7684\u590d\u6742\u6027<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em>Screenshot-[09:27]<\/em> <strong>\u622a\u56fe\u63d0\u793a<\/strong>\uff1a\u5c55\u793a P \u7801\u53d1\u751f\u5668\u7684\u590d\u6742\u6846\u56fe\uff0c\u901a\u5e38\u5305\u542b\u56db\u4e2a\u79fb\u4f4d\u5bc4\u5b58\u5668\uff08\u901a\u5e38\u4e3a X1A, X1B, X2A, X2B\uff09\uff0c\u6bcf\u4e2a\u5bc4\u5b58\u5668\u53ef\u80fd\u6709 12 \u7ea7\uff0c\u603b\u8ba1 24 \u7ea7\u4ee5\u4e0a\uff0c\u4ee5\u751f\u6210\u6781\u957f\u5468\u671f\u7684\u5e8f\u5217\u3002<\/li>\n\n\n\n<li>\u7ed3\u6784\u8bbe\u8ba1\u6781\u5176\u590d\u6742\uff0c\u76ee\u7684\u662f\u751f\u6210\u957f\u5468\u671f\u5e8f\u5217\u4ee5\u9632\u6b62\u7834\u8bd1\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">4. P \u7801\u7684\u4fdd\u5bc6\u6027\u4e0e AS \u653f\u7b56\uff08\u53cd\u7535\u5b50\u6b3a\u9a97\uff09 <a href=\"https:\/\/www.bilibili.com\/video\/BV1ia4y1s7sj_p21?t=418\" target=\"_blank\" rel=\"noreferrer noopener\">\u539f\u7247 @ 06:58<\/a>*<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u968f\u7740 GPS \u7cfb\u7edf\u7684\u53d1\u5c55\uff0cP \u7801\u7684\u6027\u8d28\u53d1\u751f\u4e86\u53d8\u5316\uff0c\u6f14\u53d8\u4e3a\u52a0\u5bc6\u7684 Y \u7801\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1. <strong>\u65e9\u671f P \u7801\u72b6\u6001<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6700\u521d P \u7801\u8bbe\u8ba1\u4e3a\u519b\u7528\u4fdd\u5bc6\u7801\u3002<\/li>\n\n\n\n<li>\u4f46\u540e\u6765 P \u7801\u7684\u751f\u6210\u7ed3\u6784\u88ab\u516c\u5f00\uff08\u5982\u6559\u79d1\u4e66\u4e2d\u53ef\u89c1\uff09\uff0c\u975e\u519b\u65b9\u5382\u5546\u4e5f\u80fd\u5236\u9020\u51fa\u751f\u6210 P \u7801\u7684\u63a5\u6536\u673a\u3002<\/li>\n\n\n\n<li>\u968f\u7740 <strong>SA (Selective Availability)<\/strong> \u653f\u7b56\u7684\u5b9e\u65bd\uff08\u4eba\u4e3a\u5f15\u5165\u8bef\u5dee\uff09\uff0c\u5355\u7eaf\u4fdd\u62a4 P \u7801\u7ed3\u6784\u5df2\u65e0\u610f\u4e49\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">2. <strong>AS (Anti-Spoofing) \u53cd\u7535\u5b50\u6b3a\u9a97\u653f\u7b56<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u4e3a\u4e86\u9632\u6b62\u654c\u65b9\u751f\u6210\u865a\u5047 GPS \u4fe1\u53f7\u6b3a\u9a97\u7f8e\u519b\u63a5\u6536\u673a\uff0c\u7f8e\u56fd\u5f15\u5165\u4e86 AS \u653f\u7b56\u3002<\/li>\n\n\n\n<li><strong>Y \u7801\u7684\u751f\u6210<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5728\u5df2\u77e5\u7684 P \u7801\u4e0a\u53e0\u52a0\u4e00\u4e2a\u4fdd\u5bc6\u7684 <strong>W \u7801<\/strong>\u3002<\/li>\n\n\n\n<li>\u516c\u5f0f\uff1a Y(t) = P(t) \\oplus W(t)<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u7ed3\u679c<\/strong>\uff1a\u536b\u661f\u4e0d\u518d\u53d1\u5c04\u7eaf P \u7801\uff0c\u800c\u662f\u53d1\u5c04\u52a0\u5bc6\u540e\u7684 <strong>Y \u7801<\/strong>\u3002<\/li>\n\n\n\n<li><strong>W \u7801\u7279\u6027<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u7801\u7387\u8f83\u4f4e\uff08\u7ea6 512 kbps\uff09\u3002<\/li>\n\n\n\n<li>\u4e00\u4e2a W \u7801\u5927\u81f4\u8986\u76d6 20 \u4e2a P \u7801\u7801\u5143\u3002<\/li>\n\n\n\n<li>\u7ed3\u6784\u4e25\u683c\u4fdd\u5bc6\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">5. GPS \u73b0\u4ee3\u5316\uff1aL2C \u4e0e L5 \u4fe1\u53f7 <a href=\"https:\/\/www.bilibili.com\/video\/BV1ia4y1s7sj_p21?t=640\" target=\"_blank\" rel=\"noreferrer noopener\">\u539f\u7247 @ 10:40<\/a>*<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e3a\u4e86\u54cd\u5e94\u975e\u519b\u65b9\u7528\u6237\u9700\u6c42\u5e76\u63d0\u5347\u6c11\u7528\u6027\u80fd\uff0cGPS \u8fdb\u884c\u4e86\u4e00\u7cfb\u5217\u73b0\u4ee3\u5316\u5347\u7ea7\uff08GPS Modernization\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1. <strong>L2C \u4fe1\u53f7 (Civil Signal on L2)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u80cc\u666f<\/strong>\uff1a\u65e9\u671f\u6c11\u7528\u53ea\u6709 L1 \u4e0a\u7684 C\/A \u7801\uff0c\u65e0\u6cd5\u6d88\u9664\u7535\u79bb\u5c42\u5ef6\u8fdf\u3002<\/li>\n\n\n\n<li><strong>\u5b9e\u65bd<\/strong>\uff1a\u4ece <strong>Block IIR-M<\/strong> \u536b\u661f\u5f00\u59cb\uff0c\u5728 L2 \u8f7d\u6ce2\u4e0a\u589e\u52a0\u4e86\u6c11\u7528\u4fe1\u53f7\uff0c\u79f0\u4e3a <strong>L2C<\/strong>\u3002<\/li>\n\n\n\n<li><strong>\u4f18\u52bf<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5141\u8bb8\u6c11\u7528\u7528\u6237\u4f7f\u7528\u53cc\u9891\uff08L1 C\/A + L2C\uff09\u8fdb\u884c\u9ad8\u7cbe\u5ea6\u7535\u79bb\u5c42\u6539\u6b63\u3002<\/li>\n\n\n\n<li><em>Screenshot-[18:04]<\/em> <strong>\u622a\u56fe\u63d0\u793a<\/strong>\uff1a\u6b64\u5904\u53ef\u80fd\u5c55\u793a\u6811\u6797\u6216\u906e\u6321\u73af\u5883\u7684\u793a\u610f\u56fe\uff0c\u8bf4\u660e L2C \u4fe1\u53f7\u5728\u6076\u52a3\u73af\u5883\u4e0b\u7684\u63a5\u6536\u80fd\u529b\u4f18\u4e8e\u4f20\u7edf\u4fe1\u53f7\u3002<\/li>\n\n\n\n<li>\u4fe1\u53f7\u7279\u6027\u66f4\u4f18\uff0c\u5229\u4e8e\u5728\u6811\u6797\u3001\u5ba4\u5185\u7b49\u5fae\u5f31\u4fe1\u53f7\u73af\u5883\u4e0b\u8ddf\u8e2a\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">2. <strong>L5 \u4fe1\u53f7<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5b9e\u65bd<\/strong>\uff1a\u4ece <strong>Block IIF<\/strong> \u536b\u661f\u5f00\u59cb\u5f15\u5165\u3002<\/li>\n\n\n\n<li><strong>\u7279\u6027<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u4e13\u4e3a\u751f\u547d\u5b89\u5168\uff08Safety of Life, \u5982\u822a\u7a7a\u5bfc\u822a\uff09\u8bbe\u8ba1\u3002<\/li>\n\n\n\n<li>\u7801\u7387\u4e0e P \u7801\u76f8\u540c\uff0810.23 MHz\uff09\uff0c\u7801\u5143\u5bbd\u5ea6\u7a84\uff0c\u6d4b\u8ddd\u7cbe\u5ea6\u6781\u9ad8\u3002<\/li>\n\n\n\n<li>\u53d1\u5c04\u529f\u7387\u66f4\u9ad8\uff0c\u6297\u5e72\u6270\u80fd\u529b\u5f3a\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">3. <strong>M \u7801 (Military Code)<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u519b\u7528\u4fe1\u53f7\u4e5f\u8fdb\u884c\u4e86\u5347\u7ea7\uff0c\u5f15\u5165\u4e86 <strong>M \u7801<\/strong>\uff0c\u4e0e Y \u7801\u5e76\u5b58\uff0c\u63d0\u4f9b\u66f4\u597d\u7684\u6297\u5e72\u6270\u548c\u4fdd\u5bc6\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">6. Z \u8ddf\u8e2a\u6280\u672f\u4e0e\u6c11\u7528\u7b56\u7565 <a href=\"https:\/\/www.bilibili.com\/video\/BV1ia4y1s7sj_p21?t=886\" target=\"_blank\" rel=\"noreferrer noopener\">\u539f\u7247 @ 14:46<\/a>*<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u5c3d\u7ba1 P \u7801\u88ab\u52a0\u5bc6\u4e3a Y \u7801\uff0c\u6c11\u7528\u9ad8\u7cbe\u5ea6\u6d4b\u91cf\u7ea7\u63a5\u6536\u673a\u4ecd\u9700\u5229\u7528 L2 \u9891\u6bb5\u4fe1\u53f7\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">1. <strong>\u56f0\u5883<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u536b\u661f\u53d1\u5c04 Y \u7801\uff08P+W\uff09\uff0c\u6c11\u7528\u63a5\u6536\u673a\u4e0d\u77e5\u9053 W \u7801\uff0c\u65e0\u6cd5\u76f4\u63a5\u89e3\u8c03 Y \u7801\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">2. <strong>Z \u8ddf\u8e2a (Z-Tracking) \/ \u534a\u65e0\u7801\u8ddf\u8e2a\u6280\u672f<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><em>Screenshot-[15:23]<\/em> <strong>\u622a\u56fe\u63d0\u793a<\/strong>\uff1a\u793a\u610f\u56fe\u5c55\u793a\u5982\u4f55\u5904\u7406 Y \u7801\u4fe1\u53f7\uff0c\u4f53\u73b0\u5c06\u4fe1\u53f7\u201c\u5e73\u65b9\u201d\u6216\u201c\u4e92\u76f8\u5173\u201d\u5904\u7406\u4ee5\u5265\u79bb W \u7801\u7684\u8fc7\u7a0b\u3002<\/li>\n\n\n\n<li><strong>\u539f\u7406<\/strong>\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5229\u7528 W \u7801\u7801\u7387\u8f83\u4f4e\u7684\u7279\u70b9\uff0c\u901a\u8fc7\u4fe1\u53f7\u5904\u7406\u6280\u672f\uff08\u5982\u4fe1\u53f7\u5e73\u65b9\u6216 L1\/L2 \u4e92\u76f8\u5173\uff09\u5265\u79bb W \u7801\u7684\u5f71\u54cd\u3002<\/li>\n\n\n\n<li>\u5c06 Y \u7801\u201c\u5206\u89e3\u201d\u6216\u5728\u4e0d\u77e5\u9053\u7f16\u7801\u7684\u60c5\u51b5\u4e0b\u6062\u590d\u51fa\u8f7d\u6ce2\u76f8\u4f4d\u548c\u4f2a\u8ddd\u89c2\u6d4b\u503c\u3002<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u4ee3\u4ef7<\/strong>\uff1a\u4fe1\u566a\u6bd4 (SNR) \u4f1a\u6709\u6240\u964d\u4f4e\uff08\u76f8\u6bd4\u76f4\u63a5\u8ddf\u8e2a\u7eaf P \u7801\uff09\u3002<\/li>\n\n\n\n<li><strong>\u610f\u4e49<\/strong>\uff1a\u4f7f\u5f97\u5927\u5730\u6d4b\u91cf\u578b\u63a5\u6536\u673a\u5728 AS \u5f00\u542f\u671f\u95f4\u4ecd\u80fd\u8fdb\u884c\u53cc\u9891\u9ad8\u7cbe\u5ea6\u6d4b\u91cf\u3002<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h2 class=\"wp-block-heading\">AI \u603b\u7ed3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u672c\u8282\u8bfe\u7a0b\u6df1\u5165\u8bb2\u89e3\u4e86 GPS \u4fe1\u53f7\u7684\u7ec4\u6210\u53ca\u5176\u6d4b\u91cf\u539f\u7406\uff0c\u6838\u5fc3\u5185\u5bb9\u6db5\u76d6\u4ee5\u4e0b\u4e09\u70b9\uff1a<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\u6d4b\u8ddd\u7801\u7684\u751f\u6210\u4e0e\u7279\u6027<\/strong>\uff1a\u8be6\u7ec6\u9610\u8ff0\u4e86 <strong>C\/A \u7801<\/strong> \u5229\u7528\u7ebf\u6027\u53cd\u9988\u79fb\u4f4d\u5bc4\u5b58\u5668\u751f\u6210 Gold \u7801\u7684\u8fc7\u7a0b\uff0c\u5176\u7ed3\u6784\u7b80\u5355\u5229\u4e8e\u6355\u83b7\uff1b\u5bf9\u6bd4\u4e86 <strong>P \u7801<\/strong> \u7684\u9ad8\u7801\u7387\u3001\u957f\u5468\u671f\u548c\u9ad8\u7cbe\u5ea6\u7279\u6027\uff0c\u4ee5\u53ca\u5176\u57fa\u4e8e\u53cc\u9891\uff08L1\/L2\uff09\u6d88\u9664\u7535\u79bb\u5c42\u8bef\u5dee\u7684\u4f18\u52bf\u3002<\/li>\n\n\n\n<li><strong>\u4fe1\u53f7\u4fdd\u5bc6\u4e0e\u6f14\u53d8<\/strong>\uff1a\u89e3\u91ca\u4e86\u4ece P \u7801\u5230 <strong>Y \u7801<\/strong> \u7684\u6f14\u53d8\u8fc7\u7a0b\u3002\u4e3a\u4e86\u9632\u6b62\u7535\u5b50\u6b3a\u9a97\uff08AS\uff09\uff0c\u5728 P \u7801\u4e0a\u6a212\u76f8\u52a0\u4fdd\u5bc6\u7684 <strong>W \u7801<\/strong> \u5f62\u6210 Y \u7801\u3002\u6c11\u7528\u6d4b\u91cf\u901a\u8fc7 <strong>Z \u8ddf\u8e2a\u6280\u672f<\/strong> \u5728\u672a\u77e5\u5bc6\u94a5\u7684\u60c5\u51b5\u4e0b\u4ecd\u80fd\u5229\u7528 L2 \u9891\u6bb5\u4fe1\u53f7\u3002<\/li>\n\n\n\n<li><strong>GPS \u73b0\u4ee3\u5316<\/strong>\uff1a\u4ecb\u7ecd\u4e86\u4e3a\u63d0\u5347\u6c11\u7528\u6027\u80fd\u800c\u65b0\u589e\u7684\u4fe1\u53f7\uff0c\u5305\u62ec <strong>L2C<\/strong>\uff08\u63d0\u4f9b\u53cc\u9891\u7535\u79bb\u5c42\u4fee\u6b63\u3001\u6539\u5584\u5f31\u4fe1\u53f7\u8ddf\u8e2a\uff09\u548c <strong>L5<\/strong>\uff08\u9ad8\u7cbe\u5ea6\u3001\u822a\u7a7a\u5b89\u5168\u7ea7\u4fe1\u53f7\uff09\uff0c\u6781\u5927\u5730\u6269\u5c55\u4e86\u975e\u519b\u65b9\u7528\u6237\u7684\u5e94\u7528\u573a\u666f\u548c\u7cbe\u5ea6\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u76ee\u5f55 1. C\/A \u7801\uff08\u7c97\u7801\/\u6355\u83b7\u7801\uff09\u7684\u4ea7\u751f\u539f\u7406\u4e0e\u7ed3\u6784 \u539f\u7247 @ 00:00* C\/A \u7801\uff08Coarse\/Ac [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[3,2],"tags":[6,4],"class_list":["post-68","post","type-post","status-publish","format-standard","hentry","category-gps","category-note","tag-ai","tag-4"],"_links":{"self":[{"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=\/wp\/v2\/posts\/68","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=68"}],"version-history":[{"count":1,"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=\/wp\/v2\/posts\/68\/revisions"}],"predecessor-version":[{"id":69,"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=\/wp\/v2\/posts\/68\/revisions\/69"}],"wp:attachment":[{"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=68"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=68"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hpu.gv.uy\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=68"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}