{"id":378,"date":"2024-08-13T16:52:41","date_gmt":"2024-08-13T08:52:41","guid":{"rendered":"https:\/\/hsiang.cc\/?p=378"},"modified":"2025-11-03T00:57:00","modified_gmt":"2025-11-02T16:57:00","slug":"gps-l1-%e5%92%8c-gps-l5-%e7%9a%84%e6%af%94%e8%bc%83","status":"publish","type":"post","link":"https:\/\/hsiang.cc\/?p=378","title":{"rendered":"[GNSS\u7b46\u8a18] GPS L1 \u548c GPS L5 \u7684\u6bd4\u8f03"},"content":{"rendered":"

GPS L1 \u548c GPS L5 \u6bd4\u8f03\u5927\u81f4\u5217\u8868\u5982\u4e0b\u3002<\/p>\n

GPS L1 V.S. GPS L5<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\u6bd4\u8f03\u9805\u76ee<\/strong><\/th>\nGPS L1<\/strong><\/th>\nGPS L5<\/strong><\/th>\n<\/tr>\n<\/thead>\n
\u983b\u7387<\/strong><\/td>\n1575.42 MHz<\/td>\n1176.45 MHz<\/td>\n<\/tr>\n
\u4fe1\u865f\u985e\u578b<\/strong><\/td>\n\u6c11\u7528 C\/A \u78bc\uff0c\u8ecd\u7528 P(Y) \u78bc<\/td>\n\u6c11\u7528 L5 \u78bc\uff0c\u8ecd\u7528 M \u78bc<\/td>\n<\/tr>\n
\u983b\u5bec<\/strong><\/td>\n2 MHz<\/td>\n24 MHz<\/td>\n<\/tr>\n
\u8abf\u88fd\u65b9\u5f0f<\/strong><\/td>\n\u4e8c\u9032\u4f4d\u76f8\u4f4d\u79fb\u9375\u63a7\uff08BPSK\uff09<\/td>\n\u4e8c\u9032\u4f4d\u76f8\u4f4d\u79fb\u9375\u63a7\uff08BPSK\uff09<\/td>\n<\/tr>\n
\u78bc\u7387<\/strong><\/td>\n1.023 Mbps<\/td>\n10.23 Mbps<\/td>\n<\/tr>\n
\u6578\u64da\u7387<\/strong><\/td>\n50 bps<\/td>\n50 bps\uff08\u5c0e\u5f15\uff09\uff0c100 bps\uff08\u6578\u64da\uff09<\/td>\n<\/tr>\n
\u591a\u8def\u5f91\u6297\u6027<\/strong><\/td>\n\u4e2d\u7b49<\/td>\n\u9ad8<\/td>\n<\/tr>\n
\u4fe1\u865f\u5f37\u5ea6<\/strong><\/td>\n\u8f03\u4f4e<\/td>\n\u8f03\u9ad8<\/td>\n<\/tr>\n
\u5e72\u64fe\u654f\u611f\u6027<\/strong><\/td>\n\u8f03\u9ad8<\/td>\n\u8f03\u4f4e<\/td>\n<\/tr>\n
\u7528\u9014<\/strong><\/td>\n\u4e00\u822c\u6c11\u7528\uff0c\u6a19\u6e96 GPS \u8a2d\u5099<\/td>\n\u9ad8\u7cbe\u5ea6\u61c9\u7528\u3001\u751f\u547d\u5b89\u5168\u670d\u52d9\u3001\u822a\u7a7a\u3001\u9ad8\u7d1a GNSS \u61c9\u7528<\/td>\n<\/tr>\n
\u53ef\u7528\u6027<\/strong><\/td>\n\u5ee3\u6cdb\u53ef\u7528<\/td>\n\u6709\u9650\u53ef\u7528\uff0c\u9010\u6b65\u90e8\u7f72\u5728\u65b0\u885b\u661f\u4e0a<\/td>\n<\/tr>\n
\u6e96\u78ba\u5ea6<\/strong><\/td>\n\u6a19\u6e96 GPS \u6e96\u78ba\u5ea6\uff08\u7d04 5-10 \u7c73\uff09<\/td>\n\u66f4\u9ad8\u7684\u6e96\u78ba\u5ea6\uff08\u7d04 30 \u5398\u7c73\u5230 1 \u7c73\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u4e3b\u8981\u5dee\u7570\uff1a<\/h3>\n
    \n
  1. \u983b\u7387<\/strong>\uff1aGPS L1 \u7684\u983b\u7387\u70ba 1575.42 MHz\uff0c\u800c GPS L5 \u7684\u983b\u7387\u8f03\u4f4e\uff0c\u70ba 1176.45 MHz\u3002<\/li>\n
  2. \u4fe1\u865f\u985e\u578b<\/strong>\uff1aL1 \u4e3b\u8981\u4f7f\u7528\u6c11\u7528 C\/A \u78bc\uff0cL5 \u5247\u63d0\u4f9b\u6c11\u7528 L5 \u78bc\u548c\u8ecd\u7528 M \u78bc\u3002<\/li>\n
  3. \u983b\u5bec<\/strong>\uff1aL5 \u7684\u983b\u5bec\u66f4\u5bec\uff0824 MHz\uff09\uff0c\u76f8\u6bd4\u4e4b\u4e0b\uff0cL1 \u70ba 2 MHz\uff0c\u9019\u8b93 L5 \u6709\u66f4\u597d\u7684\u4fe1\u865f\u89e3\u6790\u5ea6\u548c\u6e96\u78ba\u5ea6\u3002<\/li>\n
  4. \u78bc\u7387<\/strong>\uff1aL5 \u7684\u78bc\u7387\u70ba 10.23 Mbps\uff0c\u6bd4 L1 \u7684 1.023 Mbps \u9ad8\u5f88\u591a\uff0c\u9019\u8b93 L5 \u66f4\u7cbe\u78ba\u4e14\u7a69\u5b9a\u3002<\/li>\n
  5. \u6578\u64da\u7387<\/strong>\uff1a\u96d6\u7136\u5169\u8005\u7684\u6578\u64da\u50b3\u8f38\u7387\u90fd\u662f 50 bps\uff0c\u4f46 L5 \u4e5f\u53ef\u4ee5\u4ee5 100 bps \u50b3\u8f38\u6578\u64da\uff0c\u63d0\u4f9b\u66f4\u591a\u8a73\u7d30\u4fe1\u606f\u3002<\/li>\n
  6. \u591a\u8def\u5f91\u6297\u6027<\/strong>\uff1aL5 \u56e0\u5176\u5148\u9032\u7684\u4fe1\u865f\u7d50\u69cb\uff0c\u5c0d\u591a\u8def\u5f91\u6548\u61c9\uff08\u53cd\u5c04\u4fe1\u865f\u5f15\u8d77\u7684\u932f\u8aa4\uff09\u6709\u66f4\u9ad8\u7684\u6297\u6027\u3002<\/li>\n
  7. \u4fe1\u865f\u5f37\u5ea6<\/strong>\uff1aL5 \u7684\u4fe1\u865f\u5f37\u5ea6\u6bd4 L1 \u9ad8\uff0c\u56e0\u6b64\u5728\u74b0\u5883\u60e1\u52a3\u7684\u60c5\u6cc1\u4e0b\u66f4\u53ef\u9760\u3002<\/li>\n
  8. \u5e72\u64fe\u654f\u611f\u6027<\/strong>\uff1aL5 \u56e0\u5176\u66f4\u9ad8\u7684\u529f\u7387\u548c\u5148\u9032\u7684\u8abf\u88fd\u6280\u8853\uff0c\u5c0d\u5e72\u64fe\u548c\u963b\u585e\u7684\u654f\u611f\u6027\u8f03\u4f4e\u3002<\/li>\n
  9. \u7528\u9014<\/strong>\uff1aL1 \u7528\u65bc\u4e00\u822c GPS \u61c9\u7528\uff0c\u800c L5 \u5247\u91dd\u5c0d\u9ad8\u7cbe\u5ea6\u548c\u5b89\u5168\u6027\u8981\u6c42\u9ad8\u7684\u61c9\u7528\uff0c\u5982\u822a\u7a7a\u548c\u9ad8\u7d1a GNSS \u4f7f\u7528\u3002<\/li>\n
  10. \u53ef\u7528\u6027<\/strong>\uff1aL1 \u5728\u5168\u7403\u7bc4\u570d\u5167\u5ee3\u6cdb\u4f7f\u7528\uff0c\u800c L5 \u6b63\u5728\u96a8\u8457\u65b0 GPS \u885b\u661f\u9010\u6b65\u63a8\u51fa\uff0c\u76ee\u524d\u5c1a\u672a\u666e\u53ca\u3002<\/li>\n
  11. \u6e96\u78ba\u5ea6<\/strong>\uff1aL5 \u63d0\u4f9b\u66f4\u9ad8\u7684\u6e96\u78ba\u5ea6\uff0c\u9069\u7528\u65bc\u9700\u8981\u7cbe\u78ba\u5b9a\u4f4d\u7684\u61c9\u7528\u3002<\/li>\n<\/ol>\n

    \u7e3d\u7d50<\/h3>\n