{"id":100424,"date":"2025-01-14T11:47:35","date_gmt":"2025-01-14T03:47:35","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=100424"},"modified":"2025-01-14T11:47:39","modified_gmt":"2025-01-14T03:47:39","slug":"wdjgrjjff","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/100424.html","title":{"rendered":"WiFi\u591a\u5f84\u5e72\u6270\u89e3\u51b3\u65b9\u6cd5"},"content":{"rendered":"\n<p>\u3000\u3000<strong>WiFi\u591a\u5f84\u5e72\u6270<\/strong>\u662f<strong>\u65e0\u7ebf\u901a\u4fe1<\/strong>\u4e2d\u5e38\u89c1\u7684\u95ee\u9898\uff0c\u5b83\u4f1a\u5bfc\u81f4\u4fe1\u53f7\u8870\u51cf\u3001\u5ef6\u8fdf\u6269\u5c55\u4ee5\u53ca\u7801\u95f4\u5e72\u6270(ISI)\uff0c\u4ece\u800c\u5f71\u54cd\u7f51\u7edc\u6027\u80fd\u3002\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\uff0c\u53ef\u4ee5\u91c7\u7528\u4ee5\u4e0b\u51e0\u79cd\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<ul 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2.4 GHz\u9891\u6bb5\u5185\u4f7f\u7528\u8df3\u9891\u6280\u672f\uff0c\u53ef\u4ee5\u66f4\u6709\u6548\u5730\u6d88\u9664\u591a\u5f84\u6548\u5e94\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u667a\u80fd\u8def\u7531\u534f\u8bae<\/strong>\uff1a\u901a\u8fc7\u865a\u62df\u7f51\u683c\u6280\u672f\uff0c\u5c06\u76d1\u6d4b\u533a\u57df\u5212\u5206\u4e3a\u4e92\u4e0d\u5e72\u6270\u7684\u7f51\u683c\uff0c\u5e76\u9009\u62e9\u6700\u4f18\u8def\u5f84\u8fdb\u884c\u6570\u636e\u4f20\u8f93\uff0c\u4ece\u800c\u964d\u4f4e\u591a\u8def\u5f84\u5e72\u6270\u3002<\/li>\n\n\n\n<li>\u3000\u3000<strong>\u786c\u4ef6\u4f18\u5316<\/strong>\uff1a\u91c7\u7528\u9ad8\u7ea7\u5929\u7ebf\u7cfb\u7edf\u548c\u529f\u7387\u63a7\u5236\u6280\u672f\uff0c\u53ef\u4ee5\u8fdb\u4e00\u6b65\u51cf\u5c11\u591a\u5f84\u5e72\u6270\u5e26\u6765\u7684\u5f71\u54cd\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u3000\u3000\u4ee5\u4e0a\u65b9\u6cd5\u5404\u6709\u4f18\u7f3a\u70b9\uff0c\u5b9e\u9645\u5e94\u7528\u4e2d\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u573a\u666f\u9009\u62e9\u5408\u9002\u7684\u6280\u672f\u7ec4\u5408\u6765\u5e94\u5bf9WiFi\u591a\u5f84\u5e72\u6270\u95ee\u9898\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001 WiFi\u591a\u5f84\u5e72\u6270\u4e2d\u5929\u7ebf\u591a\u6837\u6027<\/h2>\n\n\n\n<p>\u3000\u3000\u5728<strong>WiFi\u901a\u4fe1<\/strong>\u4e2d\uff0c\u591a\u5f84\u5e72\u6270\u662f\u6307\u4fe1\u53f7\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7531\u4e8e\u9047\u5230\u5404\u79cd\u969c\u788d\u7269\u53cd\u5c04\u3001\u6298\u5c04\u548c\u6563\u5c04\uff0c\u5bfc\u81f4\u540c\u4e00\u4fe1\u53f7\u8def\u5f84\u4e0a\u4ea7\u751f\u591a\u4e2a\u5ef6\u8fdf\u4e0d\u540c\u7684\u526f\u672c\u3002\u8fd9\u79cd\u73b0\u8c61\u4f1a\u5f15\u8d77\u4fe1\u53f7\u7684\u76f8\u957f\u4e0e\u76f8\u6d88\uff0c\u8fdb\u800c\u5bfc\u81f4<strong>\u4fe1\u53f7\u8870\u51cf<\/strong>\u3001<strong>\u8bef\u7801\u7387<\/strong>\u589e\u52a0\u4ee5\u53ca\u6574\u4f53\u901a\u4fe1\u8d28\u91cf\u7684\u4e0b\u964d\u3002\u591a\u5f84\u6548\u5e94\u4e0d\u4ec5\u9650\u5236\u4e86WiFi\u7f51\u7edc\u7684\u8986\u76d6\u8303\u56f4\u548c\u7a33\u5b9a\u6027\uff0c\u8fd8\u5bf9\u9ad8\u6570\u636e\u901f\u7387\u4f20\u8f93\u6784\u6210\u4e86\u4e25\u5cfb\u6311\u6218\u3002\u56e0\u6b64\uff0c\u5982\u4f55\u6709\u6548\u5e94\u5bf9\u591a\u5f84\u5e72\u6270\u6210\u4e3a\u63d0\u5347WiFi\u6027\u80fd\u7684\u5173\u952e\u8bfe\u9898\u4e4b\u4e00\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>\u5929\u7ebf\u591a\u6837\u6027<\/strong>\u4f5c\u4e3a\u4e00\u79cd\u6709\u6548\u7684\u6297\u591a\u5f84\u5e72\u6270\u6280\u672f\uff0c\u901a\u8fc7\u5229\u7528\u591a\u4e2a\u5929\u7ebf\u63a5\u6536\u4e0d\u540c\u8def\u5f84\u7684\u4fe1\u53f7\uff0c\u663e\u8457\u6539\u5584\u4e86\u4fe1\u53f7\u7684\u63a5\u6536\u8d28\u91cf\u3002\u5929\u7ebf\u591a\u6837\u6027\u4e3b\u8981\u5305\u62ec<strong>\u7a7a\u95f4\u591a\u6837\u6027<\/strong>\u548c<strong>\u6781\u5316\u591a\u6837\u6027<\/strong>\u4e24\u79cd\u5f62\u5f0f\u3002\u7a7a\u95f4\u591a\u6837\u6027\u901a\u8fc7\u5728\u7269\u7406\u7a7a\u95f4\u4e2d\u5e03\u7f6e\u591a\u4e2a\u5929\u7ebf\uff0c\u5229\u7528\u4e0d\u540c\u5929\u7ebf\u63a5\u6536\u5230\u7684\u72ec\u7acb\u4fe1\u53f7\u6765\u51cf\u5c11\u5e72\u6270\u548c\u8870\u843d\u7684\u6982\u7387\u3002\u800c\u6781\u5316\u591a\u6837\u6027\u5219\u901a\u8fc7\u4f7f\u7528\u4e0d\u540c\u6781\u5316\u65b9\u5f0f\u7684\u5929\u7ebf\uff0c\u8fdb\u4e00\u6b65\u63d0\u5347\u4fe1\u53f7\u7684\u53ef\u9760\u6027\u3002\u901a\u8fc7\u8fd9\u79cd\u591a\u6837\u5316\u7684\u5929\u7ebf\u914d\u7f6e\uff0c\u7cfb\u7edf\u80fd\u591f\u5728\u591a\u5f84\u73af\u5883\u4e2d\u9009\u62e9\u6700\u4f18\u7684\u4fe1\u53f7\u8def\u5f84\uff0c\u786e\u4fdd\u6570\u636e\u4f20\u8f93\u7684\u7a33\u5b9a\u6027\u548c\u9ad8\u6548\u6027\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u5929\u7ebf\u591a\u6837\u6027\u901a\u8fc7<strong>\u63a5\u6536\u7aef\u7684\u591a\u5929\u7ebf\u5904\u7406\u6280\u672f<\/strong>\uff0c\u5982\u6700\u5927\u6bd4\u7387\u7ec4\u5408(MRC)\u548c\u9009\u62e9\u7ec4\u5408(SC)\uff0c\u6709\u6548\u63d0\u5347\u4e86\u4fe1\u53f7\u7684<strong>\u4fe1\u566a\u6bd4\uff08SNR\uff09\u548c\u94fe\u8def\u53ef\u9760\u6027<\/strong>\u3002\u4f8b\u5982\uff0cMRC\u6280\u672f\u901a\u8fc7\u5bf9\u591a\u4e2a\u63a5\u6536\u5929\u7ebf\u7684\u4fe1\u53f7\u8fdb\u884c\u52a0\u6743\u53e0\u52a0\uff0c\u6700\u5927\u5316\u63a5\u6536\u4fe1\u53f7\u7684\u603b\u529f\u7387\uff0c\u4ece\u800c\u589e\u5f3a\u4e86\u6297\u5e72\u6270\u80fd\u529b\u3002\u800cSC\u6280\u672f\u5219\u9009\u62e9\u4fe1\u566a\u6bd4\u6700\u9ad8\u7684\u5929\u7ebf\u4fe1\u53f7\u8fdb\u884c\u89e3\u8c03\uff0c\u7b80\u5316\u4e86\u63a5\u6536\u7aef\u7684\u5904\u7406\u590d\u6742\u5ea6\u3002\u5929\u7ebf\u591a\u6837\u6027\u4e0d\u4ec5\u63d0\u9ad8\u4e86\u6570\u636e\u4f20\u8f93\u7684\u7a33\u5b9a\u6027\u548c\u901f\u7387\uff0c\u8fd8\u5728\u52a8\u6001\u53d8\u5316\u7684\u65e0\u7ebf\u73af\u5883\u4e2d\u63d0\u4f9b\u4e86\u66f4\u4e3a\u7075\u6d3b\u548c\u9ad8\u6548\u7684\u4fe1\u53f7\u5904\u7406\u624b\u6bb5\uff0c\u663e\u8457\u63d0\u5347\u4e86WiFi\u7f51\u7edc\u7684\u6574\u4f53\u6027\u80fd\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5c55\u671b\u672a\u6765\uff0c\u968f\u7740<strong>\u65e0\u7ebf\u901a\u4fe1\u6280\u672f<\/strong>\u7684\u4e0d\u65ad\u8fdb\u6b65\uff0c\u5929\u7ebf\u591a\u6837\u6027\u5c06\u5728<strong>\u667a\u80fd\u5929\u7ebf\u7cfb\u7edf<\/strong>\u548c<strong>\u5927\u89c4\u6a21\u5929\u7ebf\u9635\u5217<\/strong>\u4e2d\u53d1\u6325\u66f4\u52a0\u91cd\u8981\u7684\u4f5c\u7528\u3002\u7ed3\u5408<strong>\u81ea\u9002\u5e94\u4fe1\u53f7\u5904\u7406<\/strong>\u548c<strong>\u673a\u5668\u5b66\u4e60\u7b97\u6cd5<\/strong>\uff0c\u5929\u7ebf\u591a\u6837\u6027\u6280\u672f\u5c06\u80fd\u591f\u66f4\u52a0\u667a\u80fd\u5730\u8bc6\u522b\u548c\u5e94\u5bf9\u590d\u6742\u7684\u591a\u5f84\u73af\u5883\uff0c\u8fdb\u4e00\u6b65\u63d0\u5347WiFi\u7f51\u7edc\u7684\u81ea\u9002\u5e94\u80fd\u529b\u548c\u7528\u6237\u4f53\u9a8c\u3002\u6b64\u5916\uff0c\u968f\u7740<strong>\u7269\u8054\u7f51\uff08IoT\uff09\u548c5G\u6280\u672f<\/strong>\u7684\u878d\u5408\u53d1\u5c55\uff0c\u5929\u7ebf\u591a\u6837\u6027\u5c06\u6210\u4e3a\u5b9e\u73b0\u9ad8\u5bc6\u5ea6\u8fde\u63a5\u548c\u4f4e\u5ef6\u8fdf\u901a\u4fe1\u7684\u91cd\u8981\u652f\u6491\u6280\u672f\u3002\u901a\u8fc7\u6301\u7eed\u4f18\u5316\u5929\u7ebf\u8bbe\u8ba1\u548c\u4fe1\u53f7\u5904\u7406\u7b97\u6cd5\uff0c\u592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class=\"wp-block-heading\">\u3000\u3000\u56db\u3001 RSSI\u8f85\u52a9TDoA\u65b9\u6cd5\u5728\u5ba4\u5185\u5b9a\u4f4d\u7cbe\u5ea6\u63d0\u5347\u4e2d\u7684\u5177\u4f53\u5b9e\u73b0\u548c\u6548\u679c\u5982\u4f55?<\/h2>\n\n\n\n<p>\u3000\u3000\u8fbe\u65f6\u95f4\u5dee)\u6280\u672f\u901a\u8fc7\u6d4b\u91cf\u4fe1\u53f7\u5728\u4e0d\u540c\u63a5\u6536\u7aef\u7684\u5230\u8fbe\u65f6\u95f4\u5dee\uff0c\u5229\u7528\u51e0\u4f55\u5b9a\u4f4d\u539f\u7406\u8ba1\u7b97\u51fa\u8bbe\u5907\u7684\u4f4d\u7f6e\u3002\u7136\u800c\uff0c\u5355\u72ec\u4f9d\u8d56TDoA\u5728\u590d\u6742\u7684\u5ba4\u5185\u73af\u5883\u4e2d\uff0c\u8bf8\u5982\u591a\u5f84\u6548\u5e94\u548c\u4fe1\u53f7\u906e\u6321\u7b49\u56e0\u7d20\uff0c\u5f80\u5f80\u5bfc\u81f4\u5b9a\u4f4d\u8bef\u5dee\u8f83\u5927\u3002\u4e3a\u4e86\u514b\u670d\u8fd9\u4e9b\u6311\u6218\uff0cRSSI(\u63a5\u6536\u4fe1\u53f7\u5f3a\u5ea6\u6307\u793a)\u88ab\u5f15\u5165\u4f5c\u4e3a\u8f85\u52a9\u4fe1\u606f\uff0c\u901a\u8fc7\u7ed3\u5408\u4fe1\u53f7\u5f3a\u5ea6\u4e0e\u65f6\u95f4\u5dee\u6d4b\u91cf\uff0c\u80fd\u591f\u63d0\u4f9b\u66f4\u52a0\u4e30\u5bcc\u7684\u5b9a\u4f4d\u6570\u636e\uff0c\u4ece\u800c\u63d0\u9ad8\u6574\u4f53\u5b9a\u4f4d\u7684\u51c6\u786e\u6027\u548c\u53ef\u9760\u6027\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5177\u4f53\u5b9e\u73b0\u8fc7\u7a0b\u4e2d\uff0c\u9996\u5148\u9700\u8981\u5efa\u7acb\u4e00\u4e2a\u9ad8\u7cbe\u5ea6\u7684<strong>\u65f6\u95f4\u540c\u6b65<\/strong>\u673a\u5236\uff0c\u4ee5\u786e\u4fdd\u5404\u4e2a\u63a5\u6536\u7aef\u80fd\u591f\u51c6\u786e\u6d4b\u91cf\u4fe1\u53f7\u5230\u8fbe\u7684\u65f6\u95f4\u5dee\u3002\u8fd9\u901a\u5e38\u901a\u8fc7\u4f7f\u7528\u9ad8\u7cbe\u5ea6\u7684\u65f6\u949f\u540c\u6b65\u534f\u8bae\uff0c\u5982<strong>IEEE 1588\u7cbe\u786e\u65f6\u95f4\u534f\u8bae\uff08PTP\uff09<\/strong>\uff0c\u6765\u5b9e\u73b0\u5404\u63a5\u6536\u5668\u4e4b\u95f4\u7684\u65f6\u95f4\u4e00\u81f4\u6027\u3002\u968f\u540e\uff0c\u7cfb\u7edf\u4f1a\u540c\u65f6\u8bb0\u5f55\u6bcf\u4e2a\u63a5\u6536\u7aef\u63a5\u6536\u5230\u4fe1\u53f7\u7684\u65f6\u95f4\u6233\u548c\u5bf9\u5e94\u7684<strong>RSSI\u503c<\/strong>\u3002\u8fd9\u4e9b\u6570\u636e\u4e0d\u4ec5\u7528\u4e8e\u8ba1\u7b97\u4fe1\u53f7\u7684\u5230\u8fbe\u65f6\u95f4\u5dee\uff0c\u8fd8\u7528\u4e8e\u8bc4\u4f30\u4fe1\u53f7\u5728\u4f20\u8f93\u8fc7\u7a0b\u4e2d\u7684\u8870\u51cf\u7a0b\u5ea6\uff0c\u4ece\u800c\u63a8\u65ad\u51fa\u8bbe\u5907\u4e0e\u5404\u63a5\u6536\u7aef\u4e4b\u95f4\u7684\u8ddd\u79bb\u4fe1\u606f\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u5728\u6570\u636e\u5904\u7406\u9636\u6bb5\uff0c<strong>TDoA<\/strong>\u4e0e<strong>RSSI<\/strong>\u4fe1\u606f\u9700\u8981\u901a\u8fc7\u9ad8\u7ea7\u7b97\u6cd5\u8fdb\u884c\u878d\u5408\u3002\u901a\u5e38\u91c7\u7528<strong>\u5361\u5c14\u66fc\u6ee4\u6ce2\u5668<\/strong>\u6216<strong>\u7c92\u5b50\u6ee4\u6ce2\u5668<\/strong>\u7b49\u9012\u5f52\u4f30\u8ba1\u7b97\u6cd5\uff0c\u5bf9\u591a\u6e90\u6570\u636e\u8fdb\u884c\u7efc\u5408\u5206\u6790\u3002\u8fd9\u4e9b\u7b97\u6cd5\u80fd\u591f\u6709\u6548\u5730\u5904\u7406\u566a\u58f0\u548c\u4e0d\u786e\u5b9a\u6027\uff0c\u901a\u8fc7\u8fed\u4ee3\u66f4\u65b0\u4f4d\u7f6e\u4f30\u8ba1\uff0c\u9010\u6b65\u7f29\u5c0f\u5b9a\u4f4d\u8bef\u5dee\u3002\u6b64\u5916\uff0c<strong>\u673a\u5668\u5b66\u4e60<\/strong>\u6280\u672f\u7684\u5f15\u5165\uff0c\u5982<strong>\u795e\u7ecf\u7f51\u7edc<\/strong>\u6216<strong>\u652f\u6301\u5411\u91cf\u673a\uff08SVM\uff09<\/strong>\uff0c\u80fd\u591f\u8fdb\u4e00\u6b65\u4f18\u5316\u6570\u636e\u878d\u5408\u8fc7\u7a0b\uff0c\u901a\u8fc7\u8bad\u7ec3\u6a21\u578b\u8bc6\u522b\u548c\u6821\u6b63\u7cfb\u7edf\u4e2d\u7684\u7cfb\u7edf\u6027\u8bef\u5dee\uff0c\u63d0\u9ad8\u5b9a\u4f4d\u7684\u7cbe\u5ea6\u548c\u7a33\u5b9a\u6027\u3002<\/p>\n\n\n\n<p>\u3000\u3000\u6700\u540e\uff0c\u7cfb\u7edf\u7684\u6027\u80fd\u4f18\u5316\u4f9d\u8d56\u4e8e\u7cbe\u786e\u7684<strong>\u73af\u5883\u5efa\u6a21<\/strong>\u548c<strong>\u6821\u51c6<\/strong>\u3002\u5728\u5b9e\u9645\u90e8\u7f72\u4e2d\uff0c\u9700\u8981\u5bf9\u5ba4\u5185\u73af\u5883\u8fdb\u884c\u8be6\u7ec6\u7684\u4fe1\u53f7\u4f20\u64ad\u7279\u6027\u5efa\u6a21\uff0c\u5305\u62ec\u53cd\u5c04\u3001\u6563\u5c04\u548c\u884d\u5c04\u7b49\u591a\u5f84\u6548\u5e94\u7684\u5f71\u54cd\u3002\u540c\u65f6\uff0c\u901a\u8fc7<strong>\u591a\u8def\u5f84\u4fe1\u53f7\u6d88\u9664<\/strong>\u548c<strong>\u4fe1\u53f7\u589e\u5f3a\u6280\u672f<\/strong>\uff0c\u8fdb\u4e00\u6b65\u51cf\u5c11\u5e72\u6270\u548c\u566a\u58f0\u5bf9\u5b9a\u4f4d\u7ed3\u679c\u7684\u5f71\u54cd\u3002\u5b9a\u671f\u7684\u7cfb\u7edf\u6821\u51c6\u548c\u52a8\u6001\u8c03\u6574\uff0c\u786e\u4fdd\u5728\u4e0d\u540c\u65f6\u95f4\u548c\u73af\u5883\u6761\u4ef6\u4e0b\uff0c\u7cfb\u7edf\u80fd\u591f\u4fdd\u6301\u9ad8\u7cbe\u5ea6\u7684\u5b9a\u4f4d\u80fd\u529b\u3002\u901a\u8fc7\u4ee5\u4e0a\u5404\u73af\u8282\u7684\u7cbe\u7ec6\u5b9e\u65bd\uff0c<strong>RSSI\u8f85\u52a9TDoA\u65b9\u6cd5<\/strong>\u5728\u5ba4\u5185\u5b9a\u4f4d\u4e2d\u7684\u5e94\u7528\u4e0d\u4ec5\u663e\u8457\u63d0\u5347\u4e86\u5b9a\u4f4d\u7cbe\u5ea6\uff0c\u8fd8\u589e\u5f3a\u4e86\u7cfb\u7edf\u7684\u9c81\u68d2\u6027\u548c\u9002\u5e94\u6027\uff0c\u4e3a\u667a\u80fd\u5efa\u7b51\u3001\u8d44\u4ea7\u7ba1\u7406\u548c\u4eba\u5458\u8ffd\u8e2a\u7b49\u5e94\u7528\u573a\u666f\u63d0\u4f9b\u4e86\u53ef\u9760\u7684\u6280\u672f\u652f\u6301\u3002<\/p>\n\n\n\n<h2 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