{"id":97148,"date":"2024-08-24T13:45:34","date_gmt":"2024-08-24T05:45:34","guid":{"rendered":"\/\/www.viralrail.com\/?p=97148"},"modified":"2024-08-24T13:45:41","modified_gmt":"2024-08-24T05:45:41","slug":"lwxtxmkjs-3","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/97148.html","title":{"rendered":"LoRa\u65e0\u7ebf\u901a\u8baf\u6a21\u5757\u4ecb\u7ecd"},"content":{"rendered":"\n<p>\u3000\u3000<strong>LoRa\u65e0\u7ebf\u901a\u8baf\u6a21\u5757<\/strong>\u662f\u4e00\u79cd\u57fa\u4e8e\u6269\u9891\u6280\u672f\u7684\u4f4e\u529f\u8017\u5e7f\u57df\u7f51(LPWAN)\u901a\u4fe1\u65b9\u6848\uff0c\u5e7f\u6cdb\u5e94\u7528\u4e8e\u7269\u8054\u7f51(IoT)\u9886\u57df\u3002\u5176\u6838\u5fc3\u539f\u7406\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 LoRa\u65e0\u7ebf\u901a\u8baf\u6a21\u5757\u539f\u7406\u7b80\u4ecb<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u6269\u9891\u8c03\u5236\u6280\u672f<\/strong>\uff1aLoRa\u91c7\u7528\u4e86\u4e00\u79cd\u540d\u4e3a\u201cChirp Spread Spectrum 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class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001 LoRa\u65e0\u7ebf\u901a\u8baf\u6a21\u5757\u7684Chirp Spread Spectrum (CSS)\u6280\u672f\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff0c\u4ee5\u53ca\u5b83\u5982\u4f55\u63d0\u9ad8\u901a\u4fe1\u6548\u7387?<\/h2>\n\n\n\n<p>\u3000\u3000LoRa\u65e0\u7ebf\u901a\u8baf\u6a21\u5757\u91c7\u7528\u7684Chirp Spread Spectrum (CSS)\u6280\u672f\uff0c\u662f\u4e00\u79cd\u57fa\u4e8e\u6269\u9891\u8c03\u5236\u6280\u672f\u7684\u65e0\u7ebf\u901a\u4fe1\u65b9\u6848\u3002\u5176\u5de5\u4f5c\u539f\u7406\u662f\u901a\u8fc7\u7ebf\u6027\u9891\u7387\u8c03\u5236(LFM)\u4ea7\u751f\u201c\u5541\u557e\u201d\u4fe1\u53f7\uff0c\u6bcf\u4e2a\u6570\u636e\u5305\u7684\u8f7d\u6ce2\u9891\u7387\u968f\u65f6\u95f4\u7ebf\u6027\u53d8\u5316\u3002\u8fd9\u79cd\u8c03\u5236\u65b9\u5f0f\u5c06\u6570\u636e\u7f16\u7801\u5230\u4e00\u7cfb\u5217\u8fde\u7eed\u7684\u9891\u7387\u53d8\u5316\u4e0a\uff0c\u4ece\u800c\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u3001\u4f4e\u529f\u8017\u548c\u9ad8\u6297\u5e72\u6270\u80fd\u529b\u7684\u901a\u4fe1\u3002<\/p>\n\n\n\n<p>\u3000\u3000CSS\u6280\u672f\u901a\u8fc7\u5f15\u5165\u7ebf\u6027\u9891\u7387\u53d8\u5316\u7684chirp\u4fe1\u53f7\uff0c\u5b9e\u73b0\u4e86\u4fe1\u53f7\u7684\u6269\u9891\u8c03\u5236\u3002\u8fd9\u79cd\u6269\u9891\u8c03\u5236\u65b9\u5f0f\u5177\u6709\u8f83\u4f4e\u7684\u4fe1\u566a\u6bd4\u8981\u6c42\uff0c\u4f7f\u5f97LoRa\u4fe1\u53f7\u5728\u566a\u58f0\u5e72\u6270\u8f83\u5927\u7684\u73af\u5883\u4e0b\u4ecd\u80fd\u4fdd\u6301\u8f83\u9ad8\u7684\u901a\u4fe1\u8d28\u91cf\u3002\u6b64\u5916\uff0cCSS\u8c03\u5236\u65b9\u5f0f\u8fd8\u6539\u5584\u4e86\u63a5\u6536\u7684\u7075\u654f\u5ea6\uff0c\u964d\u4f4e\u4e86\u529f\u8017\uff0c\u4f7f\u5f97\u901a\u4fe1\u8ddd\u79bb\u53ef\u8fbe15\u516c\u91cc\u4ee5\u4e0a\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5177\u4f53\u6765\u8bf4\uff0cCSS\u8c03\u5236\u65b9\u5f0f\u662f\u4e00\u79cd\u7ebf\u6027\u8c03\u5236\u65b9\u5f0f\uff0c\u5b83\u5c06\u6570\u636e\u8f6c\u5316\u4e3a\u4e00\u7cfb\u5217\u7684\u9891\u7387\u626b\u63cf\u4fe1\u53f7\uff0c\u8fd9\u4e9b\u4fe1\u53f7\u88ab\u79f0\u4f5c\u5541\u557e\u4fe1\u53f7\u3002\u8fd9\u4e9b\u5541\u557e\u4fe1\u53f7\u7c7b\u4f3c\u4e8e\u8759\u8760\u548c\u6d77\u8c5a\u4e4b\u95f4\u7684\u901a\u4fe1\u65b9\u5f0f\uff0c\u5177\u6709\u7ebf\u6027\u548c\u6b63\u5f26\u6ce2\u7684\u6ce2\u52a8\uff0c\u53ef\u4ee5\u968f\u65f6\u95f4\u589e\u52a0\u6216\u51cf\u5c11\u9891\u7387\u3002\u5728\u63a5\u6536\u7aef\uff0c\u901a\u8fc7\u76f8\u5173\u89e3\u8c03\u6280\u672f\u6062\u590d\u51fa\u539f\u59cb\u6570\u636e\u3002<\/p>\n\n\n\n<p>\u3000\u3000CSS\u6280\u672f\u901a\u8fc7\u6269\u9891\u8c03\u5236\u63d0\u9ad8\u4e86\u4fe1\u53f7\u7684\u6297\u5e72\u6270\u80fd\u529b\u548c\u4f20\u8f93\u8ddd\u79bb\uff0c\u9002\u7528\u4e8e\u957f\u8ddd\u79bb\u3001\u4f4e\u529f\u8017\u7684\u65e0\u7ebf\u901a\u4fe1\u573a\u666f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001 LoRa\u6a21\u5757\u5728\u4e0d\u540c\u5e94\u7528\u573a\u666f\u4e0b\u7684\u5b9e\u9645\u529f\u8017\u8868\u73b0\u548c\u7535\u6c60\u5bff\u547d\u6d4b\u8bd5\u7ed3\u679c\u662f\u4ec0\u4e48?<\/h2>\n\n\n\n<p>\u3000\u3000LoRa\u6a21\u5757\u5728\u4e0d\u540c\u5e94\u7528\u573a\u666f\u4e0b\u7684\u5b9e\u9645\u529f\u8017\u8868\u73b0\u548c\u7535\u6c60\u5bff\u547d\u6d4b\u8bd5\u7ed3\u679c\u5982\u4e0b\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u4f4e\u529f\u8017\u8bbe\u8ba1<\/strong>\uff1aLoRa\u6a21\u5757\u901a\u5e38\u8bbe\u8ba1\u4e3a\u4f4e\u529f\u8017\uff0c\u4ee5\u9002\u5e94\u7535\u6c60\u4f9b\u7535\u7684\u9700\u6c42\u3002\u5176\u529f\u8017\u4e3b\u8981\u53d6\u51b3\u4e8e\u53d1\u5c04\u529f\u7387\u3001\u4f20\u8f93\u901f\u7387\u548c\u5de5\u4f5c\u6a21\u5f0f\u7b49\u56e0\u7d20\u3002LoRa\u6a21\u5757\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u8868\u73b0\u51fa\u663e\u8457\u7684\u4f4e\u529f\u8017\u7279\u6027\uff0c\u8fd9\u4e3b\u8981\u5f97\u76ca\u4e8e\u5176\u8bbe\u8ba1\u521d\u8877\u548c\u5de5\u4f5c\u6a21\u5f0f\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u529f\u8017\u6d4b\u8bd5\u7ed3\u679c<\/strong>\uff1a\u5728\u5b9e\u9645\u6d4b\u8bd5\u4e2d\uff0cLoRa\u6a21\u5757\u7684\u529f\u8017\u8868\u73b0\u826f\u597d\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u529f\u7387\u5206\u6790\u4eea\u5bf9\u4e00\u6b3eLoRa\u5f00\u53d1\u677f\u8fdb\u884c\u529f\u8017\u8bc4\u6d4b\u65f6\uff0c\u53d1\u73b0\u5176\u5728\u5bfb\u547c\u548c\u4f11\u7720\u72b6\u6001\u4e0b\u7684\u5e73\u5747\u7535\u6d41\u5206\u522b\u4e3a20mA\u548c\u8f83\u4f4e\u503c\uff0c\u8868\u660e\u5176\u5728\u5f85\u673a\u72b6\u6001\u4e0b\u7684\u529f\u8017\u8f83\u4f4e\u3002\u6b64\u5916\uff0cLoRa\u6a21\u5757\u5728\u53d1\u5c04\u529f\u7387\u6d4b\u8bd5\u4e2d\u4e5f\u8868\u73b0\u51fa\u4f4e\u529f\u8017\uff0c\u4fe1\u53f7\u7a33\u5b9a\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u7535\u6c60\u5bff\u547d<\/strong>\uff1aLoRa\u6a21\u5757\u7684\u7535\u6c60\u5bff\u547d\u8f83\u957f\uff0c\u4e00\u822c\u53ef\u4ee5\u8fbe\u523010\u5e74\u4ee5\u4e0a\u3002\u7136\u800c\uff0c\u5b9e\u9645\u4ea7\u54c1\u4e2d\u7531\u4e8e\u5f85\u673a\u65f6\u95f4\u548c\u5de5\u4f5c\u6a21\u5f0f\u5bf9\u529f\u8017\u7684\u5f71\u54cd\u8f83\u5927\uff0c\u56e0\u6b64\u7535\u6c60\u5bff\u547d\u4f1a\u6709\u6240\u5dee\u5f02\u3002LoRa\u6a21\u5757\u8fd8\u5177\u6709\u4f11\u7720\u6a21\u5f0f\u548c\u5524\u9192\u673a\u5236\uff0c\u8fdb\u4e00\u6b65\u964d\u4f4e\u4e86\u529f\u8017\uff0c\u4ece\u800c\u5ef6\u957f\u4e86\u7535\u6c60\u5bff\u547d\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5e94\u7528\u573a\u666f\u8868\u73b0<\/strong>\uff1a\u5728\u8fdc\u7a0b\u76d1\u63a7\u548c\u6d4b\u91cf\u5e94\u7528\u4e2d\uff0cLoRa Class-C\u6a21\u5f0f\u7684\u8bbe\u5907\u8868\u73b0\u51fa\u8f83\u4f4e\u7684\u6700\u5927\u7535\u6d41(\u4ec5\u4e3a100uA)\uff0c\u9002\u5408\u7535\u6c60\u4f9b\u7535\u8bbe\u5907\u3002\u6b64\u5916\uff0cLoRa\u6280\u672f\u5728\u7269\u8054\u7f51\u5e94\u7528\u4e2d\u63d0\u4f9b\u4e86\u8fdc\u8ddd\u79bb\u3001\u957f\u7535\u6c60\u5bff\u547d\u548c\u4f4e\u6210\u672c\u7684\u901a\u4fe1\u89e3\u51b3\u65b9\u6848\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 LoRa\u4e0e\u5176\u4ed6\u4f4e\u529f\u8017\u901a\u4fe1\u6280\u672f(\u5982Sigfox\u3001Cellular IoT)\u76f8\u6bd4\u6709\u54ea\u4e9b\u4f18\u52bf\u548c\u52a3\u52bf?<\/h2>\n\n\n\n<p>\u3000\u3000LoRa(Long Range)\u4f5c\u4e3a\u4e00\u79cd\u4f4e\u529f\u8017\u5e7f\u57df\u7f51(LPWAN)\u6280\u672f\uff0c\u76f8\u8f83\u4e8e\u5176\u4ed6\u4f4e\u529f\u8017\u901a\u4fe1\u6280\u672f(\u5982Sigfox\u3001Cellular IoT)\u5177\u6709\u663e\u8457\u7684\u4f18\u52bf\u548c\u52a3\u52bf\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30001. \u4f18\u52bf\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u957f\u8ddd\u79bb\u901a\u4fe1<\/strong>\uff1aLoRa\u6280\u672f\u80fd\u591f\u5b9e\u73b0\u6570\u516c\u91cc\u751a\u81f3\u6570\u5341\u516c\u91cc\u7684\u901a\u4fe1\u8ddd\u79bb\uff0c\u8fd9\u4f7f\u5176\u6210\u4e3a\u8fdc\u8ddd\u79bb\u901a\u4fe1\u7684\u7406\u60f3\u9009\u62e9\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f4e\u529f\u8017<\/strong>\uff1aLoRa\u6280\u672f\u4f7f\u7528\u7684\u7535\u91cf\u975e\u5e38\u4f4e\uff0c\u56e0\u6b64\u975e\u5e38\u9002\u5408\u7269\u8054\u7f51\u8bbe\u5907\uff0c\u8fd9\u4e9b\u8bbe\u5907\u7684\u7535\u6c60\u5bff\u547d\u53ef\u80fd\u8981\u957f\u8fbe\u6570\u5e74\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u4f4e\u6210\u672c<\/strong>\uff1aLoRa\u6a21\u5757\u7684\u6210\u672c\u8f83\u4f4e\uff0c\u8fd9\u4f7f\u5f97\u5176\u5728\u672a\u6765\u5927\u89c4\u6a21\u63a8\u5e7f\u4e2d\u5360\u636e\u5de8\u5927\u4f18\u52bf\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9ad8\u63a5\u6536\u7075\u654f\u5ea6<\/strong>\uff1aLoRa\u6280\u672f\u5927\u5927\u63d0\u9ad8\u4e86\u63a5\u6536\u7075\u654f\u5ea6\uff0c\u964d\u4f4e\u4e86\u529f\u8017\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u591a\u8bbe\u5907\u8fde\u63a5<\/strong>\uff1a\u57fa\u4e8e\u8be5\u6280\u672f\u7684\u7f51\u5173\/\u96c6\u4e2d\u5668\u652f\u6301\u591a\u901a\u9053\u3001\u591a\u901f\u7387\u5e76\u884c\u5904\u7406\uff0c\u7cfb\u7edf\u5bb9\u91cf\u5927\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u6613\u4e8e\u90e8\u7f72<\/strong>\uff1aLoRa\u6280\u672f\u6613\u4e8e\u90e8\u7f72\uff0c\u4e14\u6807\u51c6\u5316\u7a0b\u5ea6\u9ad8\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u3000\u30002. \u52a3\u52bf\uff1a<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u4f4e\u4f20\u8f93\u901f\u7387<\/strong>\uff1a\u7531\u4e8eLoRa\u901a\u4fe1\u6280\u672f\u91c7\u7528\u4e86\u4f4e\u901f\u7387\u7684\u8c03\u5236\u65b9\u5f0f\uff0c\u6570\u636e\u4f20\u8f93\u901f\u7387\u76f8\u5bf9\u8f83\u4f4e\uff0c\u4e0d\u9002\u5408\u4f20\u8f93\u5927\u5bb9\u91cf\u6570\u636e\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u5ef6\u8fdf\u8f83\u9ad8<\/strong>\uff1aLoRa\u901a\u4fe1\u6280\u672f\u7684\u5ef6\u8fdf\u8f83\u9ad8\uff0c\u8fd9\u53ef\u80fd\u5f71\u54cd\u67d0\u4e9b\u5b9e\u65f6\u6027\u8981\u6c42\u8f83\u9ad8\u7684\u5e94\u7528\u573a\u666f\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u9891\u8c31\u5e72\u6270<\/strong>\uff1a\u968f\u7740LoRa\u8bbe\u5907\u548c\u7f51\u7edc\u90e8\u7f72\u7684\u589e\u591a\uff0c\u5176\u76f8\u4e92\u4e4b\u95f4\u4f1a\u51fa\u73b0\u4e00\u5b9a\u7684\u9891\u8c31\u5e72\u6270\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u6709\u9650\u7684\u5e26\u5bbd<\/strong>\uff1aLoRa\u6280\u672f\u7684\u5e26\u5bbd\u76f8\u5bf9\u6709\u9650\uff0c\u8fd9\u53ef\u80fd\u9650\u5236\u4e86\u5176\u5728\u67d0\u4e9b\u5e94\u7528\u573a\u666f\u4e2d\u7684\u6027\u80fd\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u30003. \u5bf9\u6bd4\u5176\u4ed6\u4f4e\u529f\u8017\u901a\u4fe1\u6280\u672f\uff1a<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>Sigfox<\/strong>\uff1a\u4e0eLoRa\u4e00\u6837\uff0cSigfox\u4e5f\u5177\u6709\u957f\u8ddd\u79bb\u548c\u4f4e\u529f\u8017\u7684\u7279\u70b9\uff0c\u4f46\u5176\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u7cfb\u7edf\u5bb9\u91cf\u901a\u5e38\u4f4e\u4e8eLoRa\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>Cellular IoT\uff08\u5982NB-IoT\uff09<\/strong>&nbsp;\uff1aCellular IoT\u63d0\u4f9b\u66f4\u9ad8\u7684\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u66f4\u5e7f\u6cdb\u7684\u8986\u76d6\u8303\u56f4\uff0c\u4f46\u5176\u529f\u8017\u548c\u6210\u672c\u901a\u5e38\u9ad8\u4e8eLoRa\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000LoRa\u5728\u957f\u8ddd\u79bb\u901a\u4fe1\u3001\u4f4e\u529f\u8017\u548c\u4f4e\u6210\u672c\u65b9\u9762\u5177\u6709\u663e\u8457\u4f18\u52bf\uff0c\u4f46\u5728\u4f20\u8f93\u901f\u7387\u548c\u5ef6\u8fdf\u65b9\u9762\u5b58\u5728\u52a3\u52bf\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e94\u3001 LoRa\u6a21\u5757\u7684\u6297\u5e72\u6270\u80fd\u529b\u662f\u5982\u4f55\u5b9e\u73b0\u7684<\/h2>\n\n\n\n<p>\u3000\u3000LoRa\u6a21\u5757\u7684\u6297\u5e72\u6270\u80fd\u529b\u4e3b\u8981\u901a\u8fc7\u6269\u9891\u8c03\u5236\u6280\u672f\u5b9e\u73b0\u3002\u6269\u9891\u8c03\u5236\u6280\u672f\u901a\u8fc7\u6269\u5c55\u4fe1\u53f7\u7684\u5e26\u5bbd\uff0c\u4f7f\u5f97\u4fe1\u53f7\u5728\u9891\u57df\u4e0a\u5c55\u5f00\uff0c\u4ece\u800c\u964d\u4f4e\u4fe1\u53f7\u53d7\u5230\u5e72\u6270\u7684\u6982\u7387\uff0c\u63d0\u9ad8\u901a\u4fe1\u7684\u53ef\u9760\u6027\u548c\u7a33\u5b9a\u6027\u3002\u5177\u4f53\u6765\u8bf4\uff0cLoRa\u6a21\u5757\u91c7\u7528\u76f4\u5e8f\u6269\u9891\u6280\u672f(SSC)\uff0c\u5c06\u4fe1\u53f7\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u6269\u5c55\u6210\u5bbd\u5e26\u4fe1\u53f7\uff0c\u8fd9\u6837\u53ef\u4ee5\u6709\u6548\u964d\u4f4e\u4fe1\u53f7\u88ab\u5e72\u6270\u7684\u6982\u7387\u3002\u6b64\u5916\uff0cLoRa\u6a21\u5757\u8fd8\u4f7f\u7528\u4e86\u8df3\u9891\u6280\u672f\uff0c\u8fdb\u4e00\u6b65\u589e\u5f3a\u4e86\u6297\u5e72\u6270\u80fd\u529b\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u4e0eWi-Fi\u548c\u5176\u4ed6\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u76f8\u6bd4\uff0cLoRa\u6a21\u5757\u7684\u6297\u5e72\u6270\u80fd\u529b\u6709\u663e\u8457\u4f18\u52bf\u3002Wi-Fi\u7b49\u65e0\u7ebf\u901a\u4fe1\u6280\u672f\u901a\u5e38\u4f7f\u7528\u7a84\u5e26\u8c03\u5236\u65b9\u5f0f\uff0c\u5982OFDM(\u6b63\u4ea4\u9891\u5206\u590d\u7528)\uff0c\u5728\u9ad8\u5bc6\u5ea6\u7684\u65e0\u7ebf\u73af\u5883\u4e2d\u5bb9\u6613\u53d7\u5230\u5e72\u6270\u3002\u800cLoRa\u6a21\u5757\u7531\u4e8e\u5176\u4f4e\u5e26\u5bbd\u548c\u6269\u9891\u8c03\u5236\u6280\u672f\uff0c\u80fd\u591f\u5728\u566a\u58f0\u73af\u5883\u4e0b\u4fdd\u6301\u901a\u4fe1\u7684\u7a33\u5b9a\u6027\u3002\u6b64\u5916\uff0cLoRa\u6a21\u5757\u8fd8\u5177\u6709\u8f83\u9ad8\u7684\u63a5\u6536\u7075\u654f\u5ea6(RSSI)\u548c\u6781\u5f3a\u7684\u4fe1\u566a\u6bd4(SNR)\uff0c\u8fdb\u4e00\u6b65\u589e\u5f3a\u4e86\u5176\u6297\u5e72\u6270\u80fd\u529b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u516d\u3001 LoRa\u7269\u7406\u5c42\u534f\u8bae\u4e2d\uff0c\u54ea\u4e9b\u5173\u952e\u6b65\u9aa4\u5bf9\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u7a33\u5b9a\u6027\u5f71\u54cd\u6700\u5927?<\/h2>\n\n\n\n<p>\u3000\u3000\u5728LoRa\u7269\u7406\u5c42\u534f\u8bae\u4e2d\uff0c\u5f71\u54cd\u6570\u636e\u4f20\u8f93\u901f\u7387\u548c\u7a33\u5b9a\u6027\u7684\u5173\u952e\u6b65\u9aa4\u5305\u62ec\u4ee5\u4e0b\u51e0\u4e2a\u65b9\u9762\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u3000\u3000<strong>\u6269\u9891\u56e0\u5b50\uff08Spreading 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