{"id":99946,"date":"2024-12-17T15:23:19","date_gmt":"2024-12-17T07:23:19","guid":{"rendered":"\/\/www.viralrail.com\/?p=99946"},"modified":"2024-12-17T15:23:23","modified_gmt":"2024-12-17T07:23:23","slug":"lnzcskgrnlzq","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/99946.html","title":{"rendered":"LoRa\u54ea\u79cd\u53c2\u6570\u6297\u5e72\u6270\u80fd\u529b\u6700\u5f3a"},"content":{"rendered":"\n<p>\u3000\u3000<strong>LoRa\u65e0\u7ebf\u901a\u4fe1\u6280\u672f<\/strong>\u7684\u6297\u5e72\u6270\u80fd\u529b\u4e3b\u8981\u4f9d\u8d56\u4e8e\u5176\u6269\u9891\u56e0\u5b50(SF)\u3001\u5e26\u5bbd(BW)\u548c\u7f16\u7801\u7387(CR)\u7b49\u53c2\u6570\u3002\u5728\u8fd9\u4e9b\u53c2\u6570\u4e2d\uff0c\u6269\u9891\u56e0\u5b50(SF)\u5bf9\u6297\u5e72\u6270\u80fd\u529b\u7684\u5f71\u54cd\u6700\u4e3a\u663e\u8457\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u6269\u9891\u56e0\u5b50\uff08SF\uff09<\/strong>&nbsp;\uff1a\u6269\u9891\u56e0\u5b50\u662fLoRa\u8c03\u5236\u7684\u6838\u5fc3\u53c2\u6570\uff0c\u901a\u8fc7\u5c061\u4f4d\u6570\u636e\u6269\u5c55\u4e3a\u591a\u4e2a\u4f4d\u8fdb\u884c\u4f20\u8f93\uff0c\u4ece\u800c\u63d0\u9ad8\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\u548c\u63a5\u6536\u7075\u654f\u5ea6\u3002\u6269\u9891\u56e0\u5b50\u8d8a\u5927\uff0c\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\u8d8a\u5f3a\uff0c\u4f46\u4f20\u8f93\u901f\u7387\u4f1a\u964d\u4f4e\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5e26\u5bbd\uff08BW\uff09<\/strong>&nbsp;\uff1a\u5e26\u5bbd\u51b3\u5b9a\u4e86\u4fe1\u53f7\u7684\u9891\u7387\u5bbd\u5ea6\uff0c\u8f83\u5c0f\u7684\u5e26\u5bbd\u53ef\u4ee5\u63d0\u9ad8\u63a5\u6536\u7075\u654f\u5ea6\uff0c\u4f46\u4f1a\u964d\u4f4e\u4f20\u8f93\u901f\u7387\u3002\u5e26\u5bbd\u8d8a\u5c0f\uff0c\u6297\u5e72\u6270\u80fd\u529b\u8d8a\u5f3a\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u7f16\u7801\u7387\uff08CR\uff09<\/strong>&nbsp;\uff1a\u7f16\u7801\u7387\u901a\u8fc7\u5728\u7801\u7247\u6d41\u4e2d\u52a0\u5165\u5197\u4f59\u6bd4\u7279\u6765\u589e\u5f3a\u7ea0\u9519\u80fd\u529b\uff0c\u4ece\u800c\u63d0\u9ad8\u6297\u5e72\u6270\u80fd\u529b\u3002\u8f83\u9ad8\u7684\u7f16\u7801\u7387\u53ef\u4ee5\u589e\u52a0\u5197\u4f59\uff0c\u4f46\u540c\u6837\u4f1a\u5f71\u54cd\u4f20\u8f93\u901f\u7387\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000\u6269\u9891\u56e0\u5b50(SF)\u662f\u5f71\u54cdLoRa\u6297\u5e72\u6270\u80fd\u529b\u7684\u5173\u952e\u53c2\u6570\u3002\u8f83\u5927\u7684\u6269\u9891\u56e0\u5b50\u4e0d\u4ec5\u80fd\u63d0\u9ad8\u6297\u5e72\u6270\u80fd\u529b\uff0c\u8fd8\u80fd\u5728\u4e00\u5b9a\u7a0b\u5ea6\u4e0a\u62b5\u6d88\u4f20\u8f93\u901f\u7387\u7684\u964d\u4f4e\u3002\u56e0\u6b64\uff0c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9009\u62e9\u8f83\u5927\u7684\u6269\u9891\u56e0\u5b50\u53ef\u4ee5\u663e\u8457\u63d0\u5347LoRa\u7cfb\u7edf\u7684\u6297\u5e72\u6270\u6027\u80fd\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 LoRa\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u4e2d\u6269\u9891\u56e0\u5b50(SF)\u5bf9\u4f20\u8f93\u901f\u7387\u7684\u5177\u4f53\u5f71\u54cd\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728LoRa\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u4e2d\uff0c\u6269\u9891\u56e0\u5b50(SF)\u5bf9\u4f20\u8f93\u901f\u7387\u7684\u5177\u4f53\u5f71\u54cd\u4e3b\u8981\u4f53\u73b0\u5728\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001.&nbsp;<strong>\u6570\u636e\u901f\u7387\u4e0eSF\u7684\u5173\u7cfb<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u6269\u9891\u56e0\u5b50(SF)\u8868\u793a\u6bcf\u4e2a\u4fe1\u606f\u4f4d\u53d1\u9001\u7684\u7b26\u53f7\u6570\u91cf\u3002SF\u8d8a\u5927\uff0c\u6bcf\u4e2a\u4fe1\u606f\u4f4d\u6240\u9700\u7684\u7b26\u53f7\u6570\u91cf\u8d8a\u591a\uff0c\u56e0\u6b64\u7b26\u53f7\u901f\u7387(Rs)\u4f1a\u964d\u4f4e\u3002\u4f8b\u5982\uff0c\u5f53SF\u4e3a7\u65f6\uff0c\u6570\u636e\u901f\u7387\u4e3a5.5 kbps;\u800c\u5f53SF\u4e3a12\u65f6\uff0c\u6570\u636e\u901f\u7387\u4e3a32.768 kbps&nbsp;\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002.&nbsp;<strong>\u4f20\u8f93\u8ddd\u79bb\u4e0eSF\u7684\u5173\u7cfb<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u8f83\u5927\u7684SF\u503c\u53ef\u4ee5\u63d0\u9ad8\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\u548c\u4f20\u64ad\u8ddd\u79bb\u3002\u8fd9\u662f\u56e0\u4e3a\u6269\u9891\u56e0\u5b50\u7684\u589e\u52a0\u4f7f\u5f97\u4fe1\u53f7\u5728\u540c\u4e00\u5e26\u5bbd\u4e0b\u7684\u6269\u5c55\u6bd4\u4f8b\u589e\u52a0\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u4fe1\u53f7\u7684\u8986\u76d6\u8303\u56f4\u548c\u63a5\u6536\u7075\u654f\u5ea6&nbsp;\u3002\u4f8b\u5982\uff0cSF12\u6bd4SF7\u5177\u6709\u66f4\u8fdc\u7684\u4f20\u8f93\u8ddd\u79bb\u548c\u66f4\u597d\u7684\u4fe1\u53f7\u8d28\u91cf&nbsp;\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30003.&nbsp;<strong>\u529f\u8017\u4e0eSF\u7684\u5173\u7cfb<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u867d\u7136\u8f83\u5927\u7684SF\u503c\u53ef\u4ee5\u63d0\u9ad8\u4f20\u8f93\u8ddd\u79bb\u548c\u6297\u5e72\u6270\u80fd\u529b\uff0c\u4f46\u540c\u65f6\u4e5f\u4f1a\u589e\u52a0\u4f20\u8f93\u65f6\u95f4\uff0c\u4ece\u800c\u5bfc\u81f4\u66f4\u9ad8\u7684\u80fd\u8017&nbsp;\u3002\u4f8b\u5982\uff0c\u4f7f\u7528SF7\u81f3SF10\u7684\u914d\u7f6e\u53ef\u4ee5\u4f7f\u7535\u6c60\u5bff\u547d\u957f\u8fbe\u4e00\u5e74\uff0c\u800cSF12\u548cSF11\u7684\u7535\u6c60\u5bff\u547d\u5219\u57280.5\u81f30.8\u5e74\u4e4b\u95f4&nbsp;\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30004.&nbsp;<strong>\u8bef\u7801\u7387\u4e0eSF\u7684\u5173\u7cfb<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u6269\u9891\u56e0\u5b50\u7684\u589e\u52a0\u53ef\u4ee5\u964d\u4f4e\u8bef\u7801\u7387\uff0c\u56e0\u4e3a\u5197\u4f59\u4fe1\u606f\u7684\u589e\u52a0\u6709\u52a9\u4e8e\u63d0\u9ad8\u4fe1\u53f7\u7684\u53ef\u9760\u6027&nbsp;\u3002\u7136\u800c\uff0c\u8fd9\u4e5f\u610f\u5473\u7740\u6570\u636e\u4f20\u8f93\u901f\u7387\u7684\u964d\u4f4e&nbsp;\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30005.&nbsp;<strong>\u7a7a\u4e2d\u65f6\u95f4\u4e0eSF\u7684\u5173\u7cfb<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u7a7a\u4e2d\u65f6\u95f4\u662f\u6307\u4fe1\u53f7\u5728\u7a7a\u6c14\u4e2d\u4f20\u8f93\u6240\u9700\u7684\u65f6\u95f4\uff0c\u5b83\u4e0e\u6570\u636e\u5305\u5927\u5c0f\u3001\u6570\u636e\u901f\u7387\u548c\u4f20\u8f93\u529f\u7387\u6709\u5173\u3002\u8f83\u5927\u7684SF\u503c\u4f1a\u5ef6\u957f\u7a7a\u4e2d\u65f6\u95f4\uff0c\u4ece\u800c\u5f71\u54cd\u7f51\u7edc\u8d44\u6e90\u7684\u5229\u7528\u6548\u7387\u548c\u4fe1\u9053\u51b2\u7a81\u7684\u53ef\u80fd\u6027&nbsp;\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6269\u9891\u56e0\u5b50(SF)\u5728LoRa\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u4e2d\u5bf9\u4f20\u8f93\u901f\u7387\u7684\u5f71\u54cd\u662f\u663e\u8457\u7684\u3002\u8f83\u5927\u7684SF\u503c\u867d\u7136\u53ef\u4ee5\u63d0\u9ad8\u4f20\u8f93\u8ddd\u79bb\u548c\u6297\u5e72\u6270\u80fd\u529b\uff0c\u4f46\u4f1a\u964d\u4f4e\u6570\u636e\u901f\u7387\u548c\u589e\u52a0\u529f\u8017\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 \u5728LoRa\u65e0\u7ebf\u901a\u4fe1\u4e2d\uff0c\u4e0d\u540c\u5e26\u5bbd(BW)\u8bbe\u7f6e\u4e0b\u7684\u6297\u5e72\u6270\u6027\u80fd\u6bd4\u8f83\u5982\u4f55?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728LoRa\u65e0\u7ebf\u901a\u4fe1\u4e2d\uff0c\u4e0d\u540c\u5e26\u5bbd(BW)\u8bbe\u7f6e\u4e0b\u7684\u6297\u5e72\u6270\u6027\u80fd\u5b58\u5728\u663e\u8457\u5dee\u5f02\u3002\u6211\u4eec\u53ef\u4ee5\u603b\u7ed3\u5982\u4e0b\uff1a<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001.&nbsp;<strong>\u5e26\u5bbd\u4e0e\u6570\u636e\u901f\u7387\u7684\u5173\u7cfb<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u8f83\u5927\u7684\u5e26\u5bbd(\u5982500kHz)\u5141\u8bb8\u66f4\u9ad8\u7684\u6570\u636e\u901f\u7387\uff0c\u4f46\u4f1a\u727a\u7272\u63a5\u6536\u7075\u654f\u5ea6\u548c\u8986\u76d6\u8303\u56f4\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u8f83\u5c0f\u7684\u5e26\u5bbd(\u598210.4kHz)\u867d\u7136\u6570\u636e\u901f\u7387\u8f83\u4f4e\uff0c\u4f46\u5177\u6709\u66f4\u9ad8\u7684\u63a5\u6536\u7075\u654f\u5ea6\u548c\u66f4\u597d\u7684\u6297\u5e72\u6270\u80fd\u529b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002.&nbsp;<strong>\u5e26\u5bbd\u4e0e\u6297\u5e72\u6270\u6027\u80fd\u7684\u5173\u7cfb<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u8f83\u5c0f\u7684\u5e26\u5bbd(\u598210.4kHz)\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u63a5\u6536\u7075\u654f\u5ea6(-148dBm)\uff0c\u8fd9\u4f7f\u5f97\u7cfb\u7edf\u5728\u4f4e\u4fe1\u566a\u6bd4\u73af\u5883\u4e0b\u4ecd\u80fd\u4fdd\u6301\u8f83\u597d\u7684\u901a\u4fe1\u8d28\u91cf\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u8f83\u5927\u7684\u5e26\u5bbd(\u5982500kHz)\u867d\u7136\u6570\u636e\u901f\u7387\u8f83\u9ad8\uff0c\u4f46\u7531\u4e8eTOA(\u4f20\u8f93\u65f6\u95f4)\u8f83\u77ed\uff0c\u7075\u654f\u5ea6\u8f83\u4f4e\uff0c\u6297\u5e72\u6270\u80fd\u529b\u8f83\u5dee\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30003.&nbsp;<strong>\u5177\u4f53\u5e26\u5bbd\u8bbe\u7f6e\u4e0b\u7684\u6027\u80fd\u5bf9\u6bd4<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u5728BW=10.4kHz\u65f6\uff0cSF=12\u7684\u60c5\u51b5\u4e0b\uff0c\u63a5\u6536\u7075\u654f\u5ea6\u8fbe\u5230-148dBm\uff0c\u94fe\u8def\u9884\u7b97\u4e3a170dB\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728BW=125kHz\u65f6\uff0cSF=9\u7684\u60c5\u51b5\u4e0b\uff0c\u63a5\u6536\u7075\u654f\u5ea6\u4e3a-129dBm\uff0c\u94fe\u8def\u9884\u7b97\u4e3a151dB\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728BW=250kHz\u65f6\uff0cSF=10\u7684\u60c5\u51b5\u4e0b\uff0c\u63a5\u6536\u7075\u654f\u5ea6\u4e3a-129dBm\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30004.&nbsp;<strong>\u5e94\u7528\u573a\u666f\u7684\u9002\u7528\u6027<\/strong>\uff1a<\/h3>\n\n\n\n<p>\u3000\u3000\u8f83\u5c0f\u7684\u5e26\u5bbd(\u598210.4kHz)\u9002\u7528\u4e8e\u5bf9\u9ad8\u7075\u654f\u5ea6\u548c\u5f3a\u6297\u5e72\u6270\u80fd\u529b\u8981\u6c42\u8f83\u9ad8\u7684\u5e94\u7528\u573a\u666f\uff0c\u5982\u667a\u80fd\u4eea\u8868\u3001\u697c\u5b87\u81ea\u52a8\u5316\u7b49\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u8f83\u5927\u7684\u5e26\u5bbd(\u5982500kHz)\u9002\u7528\u4e8e\u5bf9\u9ad8\u6570\u636e\u901f\u7387\u6709\u9700\u6c42\u7684\u5e94\u7528\u573a\u666f\uff0c\u5982\u89c6\u9891\u4f20\u8f93\u3001\u5b9e\u65f6\u6570\u636e\u91c7\u96c6\u7b49\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4e0d\u540c\u5e26\u5bbd\u8bbe\u7f6e\u4e0b\u7684LoRa\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u5728\u6297\u5e72\u6270\u6027\u80fd\u4e0a\u5b58\u5728\u660e\u663e\u5dee\u5f02\u3002\u8f83\u5c0f\u7684\u5e26\u5bbd\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u63a5\u6536\u7075\u654f\u5ea6\u548c\u66f4\u5f3a\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0c\u800c\u8f83\u5927\u7684\u5e26\u5bbd\u5219\u63d0\u4f9b\u4e86\u66f4\u9ad8\u7684\u6570\u636e\u901f\u7387\uff0c\u4f46\u727a\u7272\u4e86\u63a5\u6536\u7075\u654f\u5ea6\u548c\u6297\u5e72\u6270\u80fd\u529b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 LoRa\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u4e2d\u7f16\u7801\u7387(CR)\u4e0e\u4fe1\u53f7\u6297\u5e72\u6270\u80fd\u529b\u4e4b\u95f4\u7684\u5173\u7cfb\u662f\u600e\u6837\u7684?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728LoRa\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u4e2d\uff0c\u7f16\u7801\u7387(CR)\u4e0e\u4fe1\u53f7\u6297\u5e72\u6270\u80fd\u529b\u4e4b\u95f4\u5b58\u5728\u5bc6\u5207\u7684\u5173\u7cfb\u3002\u7f16\u7801\u7387\u662f\u6307\u6570\u636e\u6d41\u4e2d\u6709\u7528\u90e8\u5206(\u975e\u5197\u4f59)\u7684\u6bd4\u4f8b\uff0c\u901a\u5e38\u8868\u793a\u4e3a\u6709\u7528\u4f4d\u6570\u4e0e\u603b\u4f4d\u6570\u7684\u6bd4\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u7f16\u7801\u7387\u4e3a4\/5.\u5219\u6bcf4\u4f4d\u6709\u7528\u4fe1\u606f\u4f1a\u751f\u62105\u4f4d\u603b\u6570\u636e\uff0c\u5176\u4e2d1\u4f4d\u662f\u5197\u4f59\u4f4d\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u66f4\u9ad8\u7684\u7f16\u7801\u7387\u610f\u5473\u7740\u66f4\u591a\u7684\u5197\u4f59\u4f4d\u88ab\u6dfb\u52a0\u5230\u6570\u636e\u5305\u4e2d\uff0c\u8fd9\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\u3002\u8fd9\u662f\u56e0\u4e3a\u5197\u4f59\u4f4d\u53ef\u4ee5\u5e2e\u52a9\u63a5\u6536\u7aef\u5728\u5b58\u5728\u5e72\u6270\u7684\u60c5\u51b5\u4e0b\u6b63\u786e\u89e3\u7801\u6570\u636e\uff0c\u4ece\u800c\u63d0\u9ad8\u94fe\u8def\u7684\u53ef\u9760\u6027\u3002\u4f8b\u5982\uff0c\u5f53\u4fe1\u9053\u6761\u4ef6\u8f83\u5dee\u65f6\uff0c\u589e\u52a0\u7f16\u7801\u7387\u53ef\u4ee5\u6709\u6548\u63d0\u9ad8\u6297\u5e72\u6270\u6027\u80fd\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u7136\u800c\uff0c\u9ad8\u7f16\u7801\u7387\u4e5f\u4f1a\u5e26\u6765\u4e00\u4e9b\u8d1f\u9762\u5f71\u54cd\u3002\u9996\u5148\uff0c\u5b83\u4f1a\u589e\u52a0\u4f20\u8f93\u7684\u6570\u636e\u5f00\u9500\uff0c\u5373\u4f20\u8f93\u7684\u6570\u636e\u5305\u4e2d\u5305\u542b\u66f4\u591a\u7684\u5197\u4f59\u4f4d\uff0c\u8fd9\u4f1a\u964d\u4f4e\u6709\u6548\u6570\u636e\u4f20\u8f93\u901f\u7387\u3002\u5176\u6b21\uff0c\u9ad8\u7f16\u7801\u7387\u4f1a\u5bfc\u81f4\u4f20\u8f93\u65f6\u95f4\u5ef6\u957f\u548c\u5ef6\u8fdf\u589e\u52a0\u3002\u56e0\u6b64\uff0c\u5728\u9009\u62e9\u7f16\u7801\u7387\u65f6\u9700\u8981\u6743\u8861\u6297\u5e72\u6270\u80fd\u529b\u548c\u4f20\u8f93\u6548\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5177\u4f53\u6765\u8bf4\uff0cLoRa\u8c03\u5236\u89e3\u8c03\u5668\u91c7\u7528\u5faa\u73af\u7ea0\u9519\u7f16\u7801(FEC)\u6765\u6267\u884c\u524d\u5411\u8bef\u5dee\u68c0\u67e5\u548c\u6821\u6b63\uff0c\u8fd9\u6837\u5c31\u9700\u8981\u5197\u4f59\u4f4d\u6765\u586b\u5145FEC\u3002\u901a\u8fc7\u5408\u7406\u914d\u7f6e\u7f16\u7801\u7387\uff0c\u53ef\u4ee5\u5728\u4e0d\u540c\u7684\u5e94\u7528\u573a\u666f\u4e2d\u4f18\u5316\u7cfb\u7edf\u6027\u80fd\uff0c\u6ee1\u8db3\u5177\u4f53\u9700\u6c42\u3002<\/p>\n\n\n\n<p>\u3000\u3000LoRa\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u4e2d\u7f16\u7801\u7387(CR)\u4e0e\u4fe1\u53f7\u6297\u5e72\u6270\u80fd\u529b\u4e4b\u95f4\u7684\u5173\u7cfb\u662f\uff1a\u66f4\u9ad8\u7684\u7f16\u7801\u7387\u53ef\u4ee5\u63d0\u9ad8\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\uff0c\u4f46\u540c\u65f6\u4f1a\u589e\u52a0\u4f20\u8f93\u7684\u6570\u636e\u5f00\u9500\u548c\u5ef6\u957f\u4f20\u8f93\u65f6\u95f4\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 \u5982\u4f55\u5e73\u8861LoRa\u65e0\u7ebf\u901a\u4fe1\u4e2d\u7684\u6269\u9891\u56e0\u5b50(SF)\u3001\u5e26\u5bbd(BW)\u548c\u7f16\u7801\u7387(CR)\u4ee5\u4f18\u5316\u6297\u5e72\u6270\u6027\u80fd?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728LoRa\u65e0\u7ebf\u901a\u4fe1\u4e2d\uff0c\u6269\u9891\u56e0\u5b50(SF)\u3001\u5e26\u5bbd(BW)\u548c\u7f16\u7801\u7387(CR)\u662f\u4e09\u4e2a\u5173\u952e\u53c2\u6570\uff0c\u5b83\u4eec\u5171\u540c\u51b3\u5b9a\u4e86\u7cfb\u7edf\u7684\u6297\u5e72\u6270\u6027\u80fd\u3001\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u901a\u4fe1\u8ddd\u79bb\u3002\u4e3a\u4e86\u4f18\u5316LoRa\u7684\u6297\u5e72\u6270\u6027\u80fd\uff0c\u9700\u8981\u5e73\u8861\u8fd9\u4e9b\u53c2\u6570\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u7684\u5206\u6790\u548c\u5efa\u8bae\uff1a<\/p>\n\n\n\n<p>\u3000\u30001.&nbsp;<strong>\u6269\u9891\u56e0\u5b50\uff08SF\uff09<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u6269\u9891\u56e0\u5b50\u8868\u793a\u6bcf\u4e2a\u4fe1\u606f\u4f4d\u53d1\u9001\u7684\u7b26\u53f7\u6570\u91cf\uff0cSF\u503c\u8d8a\u9ad8\uff0c\u4fe1\u53f7\u7684\u590d\u6742\u5ea6\u589e\u52a0\uff0c\u6297\u5e72\u6270\u80fd\u529b\u8d8a\u5f3a\uff0c\u4f46\u6570\u636e\u4f20\u8f93\u901f\u7387\u4f1a\u964d\u4f4e\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u9700\u8981\u957f\u8ddd\u79bb\u901a\u4fe1\u4e14\u5bf9\u6570\u636e\u901f\u7387\u8981\u6c42\u4e0d\u9ad8\u7684\u60c5\u51b5\u4e0b\uff0c\u5e94\u9009\u62e9\u8f83\u9ad8\u7684SF\u503c\u3002\u4f8b\u5982\uff0cSF\u4e3a12\u65f6\uff0c\u867d\u7136\u6570\u636e\u4f20\u8f93\u901f\u7387\u6700\u4f4e\uff0c\u4f46\u6297\u5e72\u6270\u80fd\u529b\u6700\u5f3a\u3002<\/p>\n\n\n\n<p>\u3000\u3000SF\u503c\u7684\u9009\u62e9\u8fd8\u53d6\u51b3\u4e8e\u63a5\u6536\u673a\u8f93\u5165\u7aef\u7684\u4fe1\u566a\u6bd4(SNR)\uff0c\u5728\u8d1f\u4fe1\u566a\u6bd4\u6761\u4ef6\u4e0b\uff0c\u8f83\u9ad8\u7684SF\u503c\u53ef\u4ee5\u6539\u5584\u63a5\u6536\u673a\u7684\u7075\u654f\u5ea6\u548c\u94fe\u8def\u9884\u7b97\u3002<\/p>\n\n\n\n<p>\u3000\u30002.&nbsp;<strong>\u5e26\u5bbd\uff08BW\uff09<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u5e26\u5bbd\u51b3\u5b9a\u4e86\u5141\u8bb8\u901a\u8fc7\u4fe1\u9053\u7684\u9891\u7387\u8303\u56f4\uff0c\u8f83\u7a84\u7684\u5e26\u5bbd\u53ef\u4ee5\u51cf\u5c11\u566a\u58f0\uff0c\u63d0\u4f9b\u66f4\u9ad8\u7684\u63a5\u6536\u7075\u654f\u5ea6\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u589e\u52a0\u5e26\u5bbd\u53ef\u4ee5\u63d0\u9ad8\u6709\u6548\u6570\u636e\u901f\u7387\uff0c\u4f46\u4f1a\u727a\u7272\u90e8\u5206\u63a5\u6536\u7075\u654f\u5ea6\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u901a\u5e38\u4f7f\u7528125kHz\u7684\u4fe1\u53f7\u5e26\u5bbd\u8bbe\u7f6e\uff0c\u4f46\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u8c03\u6574\u5e26\u5bbd\u3002<\/p>\n\n\n\n<p>\u3000\u30003.&nbsp;<strong>\u7f16\u7801\u7387\uff08CR\uff09<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u7f16\u7801\u7387\u5f71\u54cd\u6570\u636e\u4f20\u8f93\u7684\u5197\u4f59\u5ea6\u548c\u7ea0\u9519\u80fd\u529b\uff0c\u8f83\u9ad8\u7684\u7f16\u7801\u7387\u53ef\u4ee5\u63d0\u9ad8\u4f20\u8f93\u7684\u53ef\u9760\u6027\uff0c\u4f46\u4f1a\u964d\u4f4e\u6570\u636e\u4f20\u8f93\u901f\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u5b58\u5728\u5e72\u6270\u7684\u60c5\u51b5\u4e0b\uff0c\u7f16\u7801\u7387\u53ef\u4ee5\u968f\u4fe1\u9053\u6761\u4ef6\u53d8\u5316\u800c\u53d8\u5316\uff0c\u4ee5\u63d0\u9ad8\u94fe\u8def\u53ef\u9760\u6027\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4f8b\u5982\uff0cCR\u4e3a4\/5\u65f6\uff0c\u7f16\u7801\u7387\u4e3a0.8.\u8fd9\u610f\u5473\u7740\u6bcf4\u6bd4\u7279\u6570\u636e\u9700\u8981\u4f20\u8f935\u6bd4\u7279\u4fe1\u606f\uff0c\u589e\u52a0\u4e86\u5197\u4f59\u5ea6\uff0c\u63d0\u9ad8\u4e86\u6297\u5e72\u6270\u80fd\u529b\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5e73\u8861\u7b56\u7565<\/p>\n\n\n\n<p>\u3000\u3000\u4e3a\u4e86\u4f18\u5316LoRa\u7684\u6297\u5e72\u6270\u6027\u80fd\uff0c\u53ef\u4ee5\u91c7\u53d6\u4ee5\u4e0b\u7b56\u7565\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u9009\u62e9\u5408\u9002\u7684SF\u503c<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u6839\u636e\u5e94\u7528\u573a\u666f\u7684\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684SF\u503c\u3002\u5982\u679c\u9700\u8981\u957f\u8ddd\u79bb\u901a\u4fe1\u4e14\u5bf9\u6570\u636e\u901f\u7387\u8981\u6c42\u4e0d\u9ad8\uff0c\u5219\u9009\u62e9\u8f83\u9ad8\u7684SF\u503c(\u5982SF 10\u621612)\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5982\u679c\u5bf9\u6570\u636e\u901f\u7387\u8981\u6c42\u8f83\u9ad8\uff0c\u5219\u9009\u62e9\u8f83\u4f4e\u7684SF\u503c(\u5982SF 7\u62168)\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u8c03\u6574BW\u548cCR<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u786e\u4fdd\u63a5\u6536\u7075\u654f\u5ea6\u7684\u524d\u63d0\u4e0b\uff0c\u9002\u5f53\u589e\u52a0\u5e26\u5bbd\u4ee5\u63d0\u9ad8\u6570\u636e\u4f20\u8f93\u901f\u7387\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6839\u636e\u4fe1\u9053\u6761\u4ef6\u548c\u6570\u636e\u4f20\u8f93\u9700\u6c42\u8c03\u6574\u7f16\u7801\u7387\u3002\u5728\u5e72\u6270\u8f83\u591a\u7684\u73af\u5883\u4e2d\uff0c\u9009\u62e9\u8f83\u9ad8\u7684\u7f16\u7801\u7387(\u5982CR 4\/5)\u4ee5\u63d0\u9ad8\u6297\u5e72\u6270\u80fd\u529b\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u7efc\u5408\u8003\u8651\u7535\u6c60\u5bff\u547d\u548c\u8ddd\u79bb<\/strong>\uff1a<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u8bbe\u8ba1LoRa\u7cfb\u7edf\u65f6\uff0c\u9700\u8981\u5728\u7535\u6c60\u5bff\u547d\u548c\u901a\u4fe1\u8ddd\u79bb\u4e4b\u95f4\u505a\u51fa\u6743\u8861\u3002\u8f83\u9ad8\u7684SF\u503c\u548c\u8f83\u4f4e\u7684BW\u53ef\u4ee5\u5ef6\u957f\u7535\u6c60\u5bff\u547d\uff0c\u4f46\u4f1a\u51cf\u5c11\u901a\u4fe1\u8ddd\u79bb;\u53cd\u4e4b\u4ea6\u7136\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e94\u3001 LoRa\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u7684\u6297\u5e72\u6270\u6027\u80fd\u6d4b\u8bd5\u7ed3\u679c<\/h2>\n\n\n\n<p>\u3000\u3000\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0cLoRa\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u7684\u6297\u5e72\u6270\u6027\u80fd\u6d4b\u8bd5\u7ed3\u679c\u8868\u660e\u5176\u5177\u6709\u663e\u8457\u7684\u6297\u5e72\u6270\u80fd\u529b\u3002\u4ee5\u4e0b\u662f\u5177\u4f53\u7684\u6d4b\u8bd5\u7ed3\u679c\u548c\u6848\u4f8b\u5206\u6790\uff1a<\/p>\n\n\n\n<h3 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