{"id":22821,"date":"2023-08-27T20:12:25","date_gmt":"2023-08-27T12:12:25","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=22821"},"modified":"2023-08-27T20:12:31","modified_gmt":"2023-08-27T12:12:31","slug":"fzphglpdgx","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/22821.html","title":{"rendered":"\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u7684\u5173\u7cfb"},"content":{"rendered":"\n
\u3000\u3000\u5728\u4fe1\u53f7\u5904\u7406\u9886\u57df\uff0c\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u662f\u4e24\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\u3002\u5b83\u4eec\u7528\u4e8e\u5206\u6790\u4fe1\u53f7\u7684\u9891\u57df\u7279\u6027\uff0c\u5e76\u5728\u8bb8\u591a\u5e94\u7528\u4e2d\u53d1\u6325\u7740\u5173\u952e\u4f5c\u7528\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u7684\u6982\u5ff5\u53ca\u5176\u5173\u7cfb\uff0c\u5e76\u8ba8\u8bba\u5b83\u4eec\u5728\u4fe1\u53f7\u5904\u7406\u4e2d\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n
\u3000\u3000\u5e45\u503c\u8c31\u662f\u8861\u91cf\u4fe1\u53f7\u5728\u9891\u57df\u4e2d\u4e0d\u540c\u9891\u7387\u5206\u91cf\u5e45\u5ea6\u7684\u4e00\u79cd\u65b9\u6cd5\u3002\u5b83\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u9891\u57df\u4e2d\u7684\u80fd\u91cf\u5206\u5e03\u60c5\u51b5\u3002\u5e45\u503c\u8c31\u901a\u5e38\u901a\u8fc7\u5bf9\u4fe1\u53f7\u8fdb\u884c\u5085\u91cc\u53f6\u53d8\u6362\u6765\u8ba1\u7b97\u5f97\u5230\u3002<\/strong>\u5085\u91cc\u53f6\u53d8\u6362\u5c06\u4fe1\u53f7\u4ece\u65f6\u57df\u8f6c\u6362\u5230\u9891\u57df\uff0c\u5e76\u5c06\u4fe1\u53f7\u8868\u793a\u4e3a\u4e0d\u540c\u9891\u7387\u5206\u91cf\u7684\u5e45\u5ea6\u548c\u76f8\u4f4d\u3002<\/p>\n\n\n\n \u3000\u3000\u5e45\u503c\u8c31\u53ef\u4ee5\u7528\u4e8e\u786e\u5b9a\u4fe1\u53f7\u4e2d\u4e0d\u540c\u9891\u7387\u5206\u91cf\u7684\u5f3a\u5ea6\u3002\u901a\u8fc7\u5206\u6790\u5e45\u503c\u8c31\uff0c\u6211\u4eec\u53ef\u4ee5\u4e86\u89e3\u4fe1\u53f7\u4e2d\u5404\u4e2a\u9891\u7387\u6210\u5206\u7684\u80fd\u91cf\u5206\u5e03\u60c5\u51b5\u3002\u5e45\u503c\u8c31\u5e38\u7528\u4e8e\u97f3\u9891\u5904\u7406\u3001\u56fe\u50cf\u5904\u7406\u3001\u901a\u4fe1\u7cfb\u7edf\u7b49\u9886\u57df\u3002<\/p>\n\n\n\n \u3000\u3000\u529f\u7387\u8c31\u662f\u8861\u91cf\u4fe1\u53f7\u5728\u9891\u57df\u4e2d\u4e0d\u540c\u9891\u7387\u5206\u91cf\u529f\u7387\u7684\u4e00\u79cd\u65b9\u6cd5\u3002\u5b83\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u9891\u57df\u4e2d\u7684\u529f\u7387\u5206\u5e03\u60c5\u51b5\u3002\u529f\u7387\u8c31\u901a\u5e38\u901a\u8fc7\u5bf9\u4fe1\u53f7\u8fdb\u884c\u5085\u91cc\u53f6\u53d8\u6362\u540e\u53d6\u6a21\u7684\u5e73\u65b9\u6765\u8ba1\u7b97\u5f97\u5230\u3002<\/p>\n\n\n\n \u3000\u3000\u529f\u7387\u8c31\u53ef\u4ee5\u7528\u4e8e\u786e\u5b9a\u4fe1\u53f7\u5728\u4e0d\u540c\u9891\u7387\u4e0a\u7684\u529f\u7387\u5206\u5e03\u60c5\u51b5\u3002\u901a\u8fc7\u5206\u6790\u529f\u7387\u8c31\uff0c\u6211\u4eec\u53ef\u4ee5\u4e86\u89e3\u4fe1\u53f7\u5728\u4e0d\u540c\u9891\u7387\u4e0a\u7684\u80fd\u91cf\u5206\u5e03\u60c5\u51b5\u3002\u529f\u7387\u8c31\u5e38\u7528\u4e8e\u4fe1\u53f7\u7684\u80fd\u91cf\u5206\u6790\u3001\u9891\u8c31\u5206\u6790\u3001\u566a\u58f0\u5206\u6790\u7b49\u9886\u57df\u3002<\/p>\n\n\n\n \u3000\u3000\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u4e4b\u95f4\u5b58\u5728\u4e00\u5b9a\u7684\u5173\u7cfb\u3002\u5728\u8fde\u7eed\u4fe1\u53f7\u7684\u60c5\u51b5\u4e0b\uff0c\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u53ef\u4ee5\u901a\u8fc7\u5085\u91cc\u53f6\u53d8\u6362\u548c\u5085\u91cc\u53f6\u53d8\u6362\u7684\u9006\u53d8\u6362\u4e4b\u95f4\u7684\u5173\u7cfb\u6765\u76f8\u4e92\u8f6c\u6362\u3002<\/p>\n\n\n\n \u3000\u3000\u5177\u4f53\u800c\u8a00\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u8fde\u7eed\u4fe1\u53f7x(t)\uff0c\u5b83\u7684\u5e45\u503c\u8c31A(f)\u548c\u529f\u7387\u8c31P(f)\u4e4b\u95f4\u7684\u5173\u7cfb\u53ef\u4ee5\u8868\u793a\u4e3a\uff1a<\/p>\n\n\n\n \u3000\u3000P(f) = |A(f)|^2<\/strong><\/p>\n\n\n\n \u3000\u3000\u5176\u4e2d\uff0cA(f)\u8868\u793a\u4fe1\u53f7x(t)\u5728\u9891\u7387f\u5904\u7684\u5e45\u503c\u8c31\uff0cP(f)\u8868\u793a\u4fe1\u53f7x(t)\u5728\u9891\u7387f\u5904\u7684\u529f\u7387\u8c31\u3002<\/p>\n\n\n\n \u3000\u3000\u5728\u79bb\u6563\u4fe1\u53f7\u7684\u60c5\u51b5\u4e0b\uff0c\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u7684\u8ba1\u7b97\u65b9\u6cd5\u6709\u6240\u4e0d\u540c\uff0c\u4f46\u5b83\u4eec\u4e4b\u95f4\u7684\u5173\u7cfb\u4ecd\u7136\u6210\u7acb\u3002<\/p>\n\n\n\n \u3000\u3000\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u5728\u4fe1\u53f7\u5904\u7406\u4e2d\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5e38\u89c1\u7684\u5e94\u7528\u9886\u57df\uff1a<\/p>\n\n\n\n \u3000\u30001. \u97f3\u9891\u5904\u7406<\/strong>\uff1a\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u5e38\u7528\u4e8e\u97f3\u9891\u4fe1\u53f7\u7684\u9891\u8c31\u5206\u6790\u3001\u97f3\u9891\u5408\u6210\u3001\u97f3\u9891\u589e\u5f3a\u7b49\u65b9\u9762\u3002\u4f8b\u5982\uff0c\u5728\u97f3\u4e50\u9886\u57df\uff0c\u901a\u8fc7\u5206\u6790\u97f3\u9891\u4fe1\u53f7\u7684\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\uff0c\u53ef\u4ee5\u5b9e\u73b0\u97f3\u9891\u7279\u5f81\u63d0\u53d6\u3001\u97f3\u9891\u5206\u7c7b\u7b49\u529f\u80fd\u3002<\/p>\n\n\n\n \u3000\u30002. \u56fe\u50cf\u5904\u7406<\/strong>\uff1a\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u5e38\u7528\u4e8e\u56fe\u50cf\u7684\u9891\u57df\u5206\u6790\u548c\u56fe\u50cf\u589e\u5f3a\u3002\u4f8b\u5982\uff0c\u5728\u56fe\u50cf\u538b\u7f29\u9886\u57df\uff0c\u901a\u8fc7\u5206\u6790\u56fe\u50cf\u4fe1\u53f7\u7684\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\uff0c\u53ef\u4ee5\u5b9e\u73b0\u56fe\u50cf\u7684\u6709\u635f\u548c\u65e0\u635f\u538b\u7f29\u3002<\/p>\n\n\n\n \u3000\u30003. \u901a\u4fe1\u7cfb\u7edf<\/strong>\uff1a\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u5bf9\u4e8e\u8c03\u5236\u548c\u89e3\u8c03\u8fc7\u7a0b\u4e2d\u7684\u4fe1\u53f7\u5206\u6790\u548c\u4fe1\u53f7\u6062\u590d\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002\u901a\u8fc7\u5206\u6790\u4fe1\u53f7\u7684\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4fe1\u53f7\u7684\u89e3\u8c03\u548c\u4fe1\u53f7\u7684\u4f20\u8f93\u8d28\u91cf\u8bc4\u4f30\u3002<\/p>\n\n\n\n \u3000\u3000\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u662f\u4fe1\u53f7\u5904\u7406\u4e2d\u91cd\u8981\u7684\u6982\u5ff5\u3002\u5b83\u4eec\u901a\u8fc7\u5bf9\u4fe1\u53f7\u8fdb\u884c\u5085\u91cc\u53f6\u53d8\u6362\u6765\u63cf\u8ff0\u4fe1\u53f7\u5728\u9891\u57df\u4e2d\u7684\u7279\u6027\u3002\u5e45\u503c\u8c31\u63cf\u8ff0\u4e86\u4fe1\u53f7\u7684\u80fd\u91cf\u5206\u5e03\u60c5\u51b5\uff0c\u800c\u529f\u7387\u8c31\u63cf\u8ff0\u4e86\u4fe1\u53f7\u7684\u529f\u7387\u5206\u5e03\u60c5\u51b5\u3002<\/strong>\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u4e4b\u95f4\u5b58\u5728\u4e00\u5b9a\u7684\u5173\u7cfb\uff0c\u53ef\u4ee5\u76f8\u4e92\u8f6c\u6362\u3002\u5b83\u4eec\u5728\u97f3\u9891\u5904\u7406\u3001\u56fe\u50cf\u5904\u7406\u3001\u901a\u4fe1\u7cfb\u7edf\u7b49\u9886\u57df\u6709\u7740\u5e7f\u6cdb\u7684\u5e94\u7528\u3002\u6df1\u5165\u7406\u89e3\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u7684\u6982\u5ff5\u53ca\u5176\u5173\u7cfb\uff0c\u6709\u52a9\u4e8e\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u4fe1\u53f7\u5904\u7406\u6280\u672f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":" 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\u3000\u3000\u4e09\u3001\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u7684\u5173\u7cfb<\/h2>\n\n\n\n
\u3000\u3000\u56db\u3001\u5e45\u503c\u8c31\u548c\u529f\u7387\u8c31\u7684\u5e94\u7528<\/h2>\n\n\n\n
\u3000\u3000\u7ed3\u8bba\uff1a<\/h2>\n\n\n\n