{"id":7505,"date":"2023-07-26T17:32:36","date_gmt":"2023-07-26T09:32:36","guid":{"rendered":"\/\/www.viralrail.com\/?p=7505"},"modified":"2023-07-26T17:35:13","modified_gmt":"2023-07-26T09:35:13","slug":"xzbjsgssnzdshnssm","status":"publish","type":"post","link":"\/\/www.viralrail.com\/blog\/7505.html","title":{"rendered":"\u4fe1\u566a\u6bd4\u8ba1\u7b97\u516c\u5f0fs\/n\u4e2d\u7684s\u548cn\u662f\u4ec0\u4e48?"},"content":{"rendered":"\n

\u3000\u3000\u4fe1\u566a\u6bd4\u662f\u4e00\u79cd\u7528\u4e8e\u8861\u91cf\u4fe1\u53f7\u8d28\u91cf\u7684\u6307\u6807\uff0c\u4e5f\u662f\u8861\u91cf\u901a\u4fe1\u7cfb\u7edf\u6027\u80fd\u7684\u91cd\u8981\u53c2\u6570\u4e4b\u4e00\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u4fe1\u53f7\u548c\u566a\u58f0\u662f\u540c\u65f6\u5b58\u5728\u7684\uff0c\u4fe1\u566a\u6bd4\u5c31\u662f\u4fe1\u53f7\u529f\u7387\u4e0e\u566a\u58f0\u529f\u7387\u4e4b\u6bd4\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u4fe1\u566a\u6bd4\u7684\u503c\u8d8a\u5927\uff0c\u8868\u793a\u4fe1\u53f7\u8d28\u91cf\u8d8a\u597d\uff0c\u7cfb\u7edf\u6027\u80fd\u4e5f\u8d8a\u597d\u3002<\/p>\n\n\n\n

\u3000\u3000\u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3as\/n\uff0c\u5176\u4e2ds\u8868\u793a\u4fe1\u53f7\u529f\u7387\uff0cn\u8868\u793a\u566a\u58f0\u529f\u7387\u3002\u5728\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c\u4fe1\u53f7\u529f\u7387\u901a\u5e38\u662f\u6307\u4fe1\u53f7\u7684\u5e73\u5747\u529f\u7387\uff0c\u566a\u58f0\u529f\u7387\u5219\u662f\u6307\u6240\u6709\u566a\u58f0\u6e90\u4ea7\u751f\u7684\u529f\u7387\u4e4b\u548c\u3002\u4fe1\u566a\u6bd4\u53ef\u4ee5\u7528\u5206\u8d1d(dB)\u8868\u793a\uff0c\u901a\u5e38\u7528dB\u8868\u793a\uff0c\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1aSNR = 10log10(s\/n)<\/strong>\u3002<\/p>\n\n\n\n

\u3000\u3000\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u4fe1\u53f7\u548c\u566a\u58f0\u7684\u529f\u7387\u53ef\u4ee5\u901a\u8fc7\u4e0d\u540c\u7684\u65b9\u6cd5\u8fdb\u884c\u6d4b\u91cf\u3002\u4f8b\u5982\uff0c\u5728\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u6d4b\u91cf\u63a5\u6536\u4fe1\u53f7\u7684\u529f\u7387\u548c\u566a\u58f0\u529f\u7387\u6765\u8ba1\u7b97\u4fe1\u566a\u6bd4\u3002\u5728\u97f3\u9891\u5904\u7406\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u6d4b\u91cf\u97f3\u9891\u4fe1\u53f7\u7684\u529f\u7387\u548c\u80cc\u666f\u566a\u58f0\u7684\u529f\u7387\u6765\u8ba1\u7b97\u4fe1\u566a\u6bd4\u3002<\/p>\n\n\n\n

\u3000\u3000\u9664\u4e86\u8ba1\u7b97\u4fe1\u566a\u6bd4\u5916\uff0c\u8fd8\u53ef\u4ee5\u91c7\u53d6\u4e00\u4e9b\u63aa\u65bd\u6765\u63d0\u9ad8\u4fe1\u566a\u6bd4\u3002\u4f8b\u5982\uff0c\u5728\u65e0\u7ebf\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c\u53ef\u4ee5\u91c7\u7528\u4e00\u4e9b\u6280\u672f\u6765\u51cf\u5c11\u566a\u58f0\u7684\u5e72\u6270\uff0c\u5982\u9891\u8c31\u5206\u6790\u3001\u4fe1\u9053\u7f16\u7801\u3001\u667a\u80fd\u5929\u7ebf\u7b49\u3002\u5728\u97f3\u9891\u5904\u7406\u4e2d\uff0c\u53ef\u4ee5\u91c7\u7528\u964d\u566a\u7b97\u6cd5\u6765\u51cf\u5c11\u80cc\u666f\u566a\u58f0\u7684\u5e72\u6270\uff0c\u5982\u8c31\u51cf\u6cd5\u3001\u58f0\u5b66\u6ee4\u6ce2\u7b49\u3002<\/p>\n\n\n\n

\u3000\u3000\u603b\u4e4b\uff0c\u4fe1\u566a\u6bd4\u662f\u8861\u91cf\u4fe1\u53f7\u8d28\u91cf\u7684\u91cd\u8981\u6307\u6807\u4e4b\u4e00\uff0c\u4e5f\u662f\u8861\u91cf\u901a\u4fe1\u7cfb\u7edf\u6027\u80fd\u7684\u91cd\u8981\u53c2\u6570\u4e4b\u4e00\u3002\u901a\u8fc7\u8ba1\u7b97\u4fe1\u566a\u6bd4\u548c\u91c7\u53d6\u4e00\u4e9b\u63aa\u65bd\u6765\u63d0\u9ad8\u4fe1\u566a\u6bd4\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u63d0\u9ad8\u7cfb\u7edf\u6027\u80fd\u548c\u4fe1\u53f7\u8d28\u91cf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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