{"id":74427,"date":"2024-01-11T05:29:37","date_gmt":"2024-01-10T21:29:37","guid":{"rendered":"\/\/www.dealsbon.com\/?p=74427"},"modified":"2024-01-11T05:29:37","modified_gmt":"2024-01-10T21:29:37","slug":"xhqdjsgsjyy","status":"publish","type":"post","link":"\/\/www.dealsbon.com\/blog\/74427.html","title":{"rendered":"\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u516c\u5f0f\u53ca\u5e94\u7528"},"content":{"rendered":"

  \u4eca\u5929\u6211\u4eec\u5c06\u4ecb\u7ecd\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u516c\u5f0f\uff0c\u5e76\u63a2\u8ba8\u5176\u5728\u65e0\u7ebf\u901a\u4fe1\u3001\u7f51\u7edc\u8986\u76d6\u548c\u5b9a\u4f4d\u7b49\u9886\u57df\u7684\u5e94\u7528\u3002<\/p>\n

\u65e0\u7ebf\u901a\u4fe1\u4e2d\u7684\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97<\/h2>\n

  \u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u516c\u5f0f\u7684\u57fa\u672c\u539f\u7406<\/h3>\n

  \u5728\u65e0\u7ebf\u901a\u4fe1\u4e2d\uff0c\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u662f\u8bc4\u4f30\u65e0\u7ebf\u4fe1\u53f7\u5728\u7a7a\u95f4\u4e2d\u4f20\u64ad\u8870\u51cf\u7684\u5173\u952e\u56e0\u7d20\u3002\u5e38\u7528\u7684\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u516c\u5f0f\u5305\u62ec\u81ea\u7531\u7a7a\u95f4\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u3001\u8def\u5f84\u635f\u8017\u6a21\u578b\u3001\u591a\u5f84\u6548\u5e94\u7b49\u3002\u8fd9\u4e9b\u516c\u5f0f\u57fa\u4e8e\u7535\u78c1\u6ce2\u5728\u7a7a\u95f4\u4e2d\u7684\u4f20\u8f93\u7279\u6027\uff0c\u53ef\u4ee5\u7528\u6765\u63a8\u5bfc\u4e0d\u540c\u73af\u5883\u4e0b\u7684\u4fe1\u53f7\u8870\u51cf\u60c5\u51b5\u3002<\/p>\n

  \u81ea\u7531\u7a7a\u95f4\u4f20\u64ad\u635f\u8017\u516c\u5f0f<\/h3>\n

  \u81ea\u7531\u7a7a\u95f4\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u662f\u63cf\u8ff0\u65e0\u7ebf\u7535\u6ce2\u5728\u81ea\u7531\u7a7a\u95f4\u4f20\u64ad\u65f6\u8870\u51cf\u7684\u516c\u5f0f\uff0c\u4e00\u822c\u8868\u793a\u4e3a\uff1aPL(dB) = 20*log10(d) + 20*log10(f) + 20*log10(4\u03c0\/c)\uff0c\u5176\u4e2dPL\u8868\u793a\u8def\u5f84\u635f\u8017\uff08dB\uff09\uff0cd\u8868\u793a\u4f20\u64ad\u8ddd\u79bb\uff08\u7c73\uff09\uff0cf\u8868\u793a\u9891\u7387\uff08\u8d6b\u5179\uff09\uff0cc\u4e3a\u5149\u901f\u3002<\/p>\n

  \u8def\u5f84\u635f\u8017\u6a21\u578b<\/h3>\n

  \u8def\u5f84\u635f\u8017\u6a21\u578b\u662f\u9488\u5bf9\u7279\u5b9a\u73af\u5883\u4e0b\u7684\u4fe1\u53f7\u4f20\u8f93\u7279\u6027\u800c\u63d0\u51fa\u7684\u8ba1\u7b97\u65b9\u6cd5\uff0c\u5e38\u89c1\u7684\u6a21\u578b\u5305\u62ecFriis\u81ea\u7531\u7a7a\u95f4\u6a21\u578b\u3001Hata\u57ce\u5e02\u4f20\u64ad\u6a21\u578b\u3001Cost231-Hata\u6a21\u578b\u7b49\uff0c\u5b83\u4eec\u8003\u8651\u4e86\u4f20\u64ad\u8ddd\u79bb\u3001\u9891\u7387\u3001\u5929\u7ebf\u9ad8\u5ea6\u3001\u5730\u5f62\u7b49\u56e0\u7d20\uff0c\u4f7f\u5f97\u4fe1\u53f7\u5f3a\u5ea6\u7684\u8ba1\u7b97\u66f4\u52a0\u51c6\u786e\u3002<\/p>\n

\u7f51\u7edc\u8986\u76d6\u4e2d\u7684\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97<\/h2>\n

  \u8986\u76d6\u8303\u56f4\u9884\u6d4b<\/h3>\n

  \u5728\u7f51\u7edc\u89c4\u5212\u4e2d\uff0c\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u53ef\u4ee5\u7528\u6765\u9884\u6d4b\u57fa\u7ad9\u7684\u8986\u76d6\u8303\u56f4\uff0c\u4ece\u800c\u4f18\u5316\u7f51\u7edc\u5e03\u5c40\u3001\u63d0\u9ad8\u7f51\u7edc\u5bb9\u91cf\u548c\u8986\u76d6\u8d28\u91cf\u3002\u901a\u8fc7\u5408\u7406\u9009\u62e9\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u6a21\u578b\u548c\u53c2\u6570\uff0c\u53ef\u4ee5\u7cbe\u786e\u9884\u6d4b\u57fa\u7ad9\u7684\u8986\u76d6\u534a\u5f84\u548c\u4fe1\u53f7\u8870\u51cf\u60c5\u51b5\uff0c\u4e3a\u7f51\u7edc\u4f18\u5316\u63d0\u4f9b\u91cd\u8981\u4f9d\u636e\u3002<\/p>\n

  \u5ba4\u5185\u8986\u76d6\u8bbe\u8ba1<\/h3>\n

  \u5728\u5ba4\u5185\u73af\u5883\u4e2d\uff0c\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u540c\u6837\u81f3\u5173\u91cd\u8981\u3002\u5408\u7406\u7684\u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u53ef\u4ee5\u5e2e\u52a9\u8bbe\u8ba1\u5ba4\u5185\u5206\u5e03\u5f0f\u5929\u7ebf\u7cfb\u7edf\u548c\u65e0\u7ebf\u63a5\u5165\u70b9\u7684\u5e03\u5c40\uff0c\u4ee5\u786e\u4fdd\u5ba4\u5185\u7f51\u7edc\u8986\u76d6\u5747\u5300\u3001\u4fe1\u53f7\u8d28\u91cf\u826f\u597d\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u4fe1\u53f7\u5f3a\u5ea6\u8ba1\u7b97\u7684\u91cd\u8981\u6027<\/h3>\n

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