{"id":70711,"date":"2023-12-18T13:56:03","date_gmt":"2023-12-18T05:56:03","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=70711"},"modified":"2023-12-18T13:56:07","modified_gmt":"2023-12-18T05:56:07","slug":"fptxhxptxgstd","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/70711.html","title":{"rendered":"\u5e45\u9891\u7279\u6027\u548c\u76f8\u9891\u7279\u6027\u516c\u5f0f\u63a8\u5bfc"},"content":{"rendered":"\n

\u3000\u3000\u5728\u4fe1\u53f7\u5904\u7406\u548c\u7535\u8def\u8bbe\u8ba1\u4e2d\uff0c\u5e45\u9891\u7279\u6027<\/strong>\u548c\u76f8\u9891\u7279\u6027<\/strong>\u662f\u4e24\u4e2a\u91cd\u8981\u7684\u6982\u5ff5\u3002\u5b83\u4eec\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u9891\u7387\u57df\u4e0a\u7684\u884c\u4e3a\uff0c\u5bf9\u4e8e\u7406\u89e3\u548c\u5206\u6790\u4fe1\u53f7\u7684\u7279\u6027\u975e\u5e38\u6709\u5e2e\u52a9\u3002\u672c\u6587\u5c06\u5bf9\u5e45\u9891\u7279\u6027\u548c\u76f8\u9891\u7279\u6027\u8fdb\u884c\u8be6\u7ec6\u7684\u89e3\u91ca\uff0c\u5e76\u63a8\u5bfc\u51fa\u76f8\u5173\u7684\u516c\u5f0f\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e00\u3001\u5e45\u9891\u7279\u6027<\/h2>\n\n\n\n

\u3000\u3000\u5e45\u9891\u7279\u6027\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u9891\u7387\u57df\u4e0a\u7684\u632f\u5e45\u53d8\u5316\u3002\u5728\u4fe1\u53f7\u5904\u7406\u4e2d\uff0c\u6211\u4eec\u7ecf\u5e38\u4f7f\u7528\u5085\u91cc\u53f6\u53d8\u6362\u5c06\u4fe1\u53f7\u4ece\u65f6\u57df\u8f6c\u6362\u5230\u9891\u57df\u3002\u5e45\u9891\u7279\u6027\u53ef\u4ee5\u901a\u8fc7\u5085\u91cc\u53f6\u53d8\u6362\u540e\u7684\u9891\u8c31\u6765\u8868\u793a\u3002<\/p>\n\n\n\n

\u3000\u3000\u5728\u9891\u57df\u4e2d\uff0c\u4fe1\u53f7\u7684\u5e45\u5ea6\u53ef\u4ee5\u7528\u590d\u6570\u8868\u793a\uff0c\u5373\u5e45\u5ea6\u548c\u76f8\u4f4d\u3002\u5e45\u9891\u7279\u6027\u901a\u5e38\u4f7f\u7528\u9891\u7387\u54cd\u5e94\u51fd\u6570\u6765\u8868\u793a\uff0c\u5b83\u662f\u4e00\u4e2a\u590d\u6570\u51fd\u6570\uff0c\u53ef\u4ee5\u8868\u793a\u4fe1\u53f7\u7684\u632f\u5e45\u548c\u76f8\u4f4d\u968f\u9891\u7387\u53d8\u5316\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n

\u3000\u3000\u8bbe\u8f93\u5165\u4fe1\u53f7\u4e3ax(t)\uff0c\u7ecf\u8fc7\u5085\u91cc\u53f6\u53d8\u6362\u540e\u5f97\u5230\u7684\u9891\u8c31\u4e3aX(f)\u3002\u9891\u7387\u54cd\u5e94\u51fd\u6570H(f)\u53ef\u4ee5\u5b9a\u4e49\u4e3a\u8f93\u51fa\u4fe1\u53f7\u7684\u9891\u8c31Y(f)\u4e0e\u8f93\u5165\u4fe1\u53f7\u7684\u9891\u8c31X(f)\u4e4b\u95f4\u7684\u6bd4\u503c\uff1a<\/p>\n\n\n\n

\u3000\u3000H(f) = Y(f) \/ X(f)<\/strong><\/p>\n\n\n\n

\u3000\u3000\u5176\u4e2d\uff0cH(f)\u53ef\u4ee5\u8868\u793a\u4e3a\u632f\u5e45\u8c31\u548c\u76f8\u4f4d\u8c31\u7684\u590d\u6570\u5f62\u5f0f\uff1a<\/p>\n\n\n\n

\u3000\u3000H(f) = |H(f)| * exp(j * \u03c6(f))<\/strong><\/p>\n\n\n\n

\u3000\u3000\u5176\u4e2d\uff0c|H(f)|\u8868\u793a\u632f\u5e45\u8c31\uff0c\u03c6(f)\u8868\u793a\u76f8\u4f4d\u8c31\u3002<\/strong>\u632f\u5e45\u8c31\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u4e0d\u540c\u9891\u7387\u4e0a\u7684\u632f\u5e45\u53d8\u5316\uff0c\u76f8\u4f4d\u8c31\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u4e0d\u540c\u9891\u7387\u4e0a\u7684\u76f8\u4f4d\u53d8\u5316\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e8c\u3001\u76f8\u9891\u7279\u6027<\/h2>\n\n\n\n

\u3000\u3000\u76f8\u9891\u7279\u6027\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u9891\u7387\u57df\u4e0a\u7684\u76f8\u4f4d\u53d8\u5316\u3002\u76f8\u9891\u7279\u6027\u53ef\u4ee5\u901a\u8fc7\u9891\u7387\u54cd\u5e94\u51fd\u6570\u7684\u76f8\u4f4d\u8c31\u6765\u8868\u793a\u3002<\/p>\n\n\n\n

\u3000\u3000\u5728\u9891\u57df\u4e2d\uff0c\u76f8\u4f4d\u53ef\u4ee5\u7528\u89d2\u5ea6\u6765\u8868\u793a\u3002\u76f8\u9891\u7279\u6027\u901a\u5e38\u4f7f\u7528\u9891\u7387\u54cd\u5e94\u51fd\u6570\u7684\u76f8\u4f4d\u8c31\u6765\u63cf\u8ff0\u4fe1\u53f7\u7684\u76f8\u4f4d\u968f\u9891\u7387\u53d8\u5316\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n

\u3000\u3000\u8bbe\u8f93\u5165\u4fe1\u53f7\u4e3ax(t)\uff0c\u7ecf\u8fc7\u5085\u91cc\u53f6\u53d8\u6362\u540e\u5f97\u5230\u7684\u9891\u8c31\u4e3aX(f)\u3002\u9891\u7387\u54cd\u5e94\u51fd\u6570H(f)\u7684\u76f8\u4f4d\u8c31\u03c6(f)\u63cf\u8ff0\u4e86\u8f93\u51fa\u4fe1\u53f7\u7684\u76f8\u4f4d\u968f\u9891\u7387\u53d8\u5316\u7684\u60c5\u51b5\u3002<\/p>\n\n\n\n

\u3000\u3000\u4e09\u3001\u5e45\u9891\u7279\u6027\u548c\u76f8\u9891\u7279\u6027\u7684\u5173\u7cfb<\/h2>\n\n\n\n

\u3000\u3000\u5e45\u9891\u7279\u6027\u548c\u76f8\u9891\u7279\u6027\u662f\u5bc6\u5207\u76f8\u5173\u7684\u3002\u6839\u636e\u6b27\u62c9\u516c\u5f0f\uff0c\u590d\u6570\u53ef\u4ee5\u8868\u793a\u4e3a\u632f\u5e45\u548c\u76f8\u4f4d\u7684\u4e58\u79ef\uff1a<\/p>\n\n\n\n

\u3000\u3000H(f) = |H(f)| * exp(j * \u03c6(f))<\/strong><\/p>\n\n\n\n

\u3000\u3000\u5176\u4e2d\uff0c|H(f)|\u8868\u793a\u632f\u5e45\u8c31\uff0c\u03c6(f)\u8868\u793a\u76f8\u4f4d\u8c31\u3002<\/strong>\u53ef\u4ee5\u770b\u51fa\uff0c\u5e45\u9891\u7279\u6027\u548c\u76f8\u9891\u7279\u6027\u662f\u901a\u8fc7\u9891\u7387\u54cd\u5e94\u51fd\u6570\u76f8\u4e92\u5173\u8054\u7684\u3002<\/p>\n\n\n\n

\u3000\u3000\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u5e45\u9891\u7279\u6027\u6765\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u6210\u5206\u548c\u632f\u5e45\u53d8\u5316\u60c5\u51b5\uff0c\u6839\u636e\u76f8\u9891\u7279\u6027\u6765\u5206\u6790\u4fe1\u53f7\u7684\u76f8\u4f4d\u53d8\u5316\u60c5\u51b5\u3002\u5e45\u9891\u7279\u6027\u548c\u76f8\u9891\u7279\u6027\u7684\u5206\u6790\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u8bbe\u8ba1\u548c\u4f18\u5316\u4fe1\u53f7\u5904\u7406\u7cfb\u7edf\u548c\u7535\u8def\u3002<\/p>\n\n\n\n

\u3000\u3000\u7ed3\u8bba\uff1a<\/h2>\n\n\n\n

\u3000\u3000\u5e45\u9891\u7279\u6027\u548c\u76f8\u9891\u7279\u6027\u662f\u4fe1\u53f7\u5904\u7406\u548c\u7535\u8def\u8bbe\u8ba1\u4e2d\u7684\u91cd\u8981\u6982\u5ff5\u3002\u5e45\u9891\u7279\u6027\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u9891\u7387\u57df\u4e0a\u7684\u632f\u5e45\u53d8\u5316\uff0c\u76f8\u9891\u7279\u6027\u63cf\u8ff0\u4e86\u4fe1\u53f7\u5728\u9891\u7387\u57df\u4e0a\u7684\u76f8\u4f4d\u53d8\u5316\u3002<\/strong>\u5e45\u9891\u7279\u6027\u548c\u76f8\u9891\u7279\u6027\u901a\u8fc7\u9891\u7387\u54cd\u5e94\u51fd\u6570\u76f8\u4e92\u5173\u8054\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u7406\u89e3\u548c\u5206\u6790\u4fe1\u53f7\u7684\u7279\u6027\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u5229\u7528\u5e45\u9891\u7279\u6027\u548c\u76f8\u9891\u7279\u6027\u6765\u8bbe\u8ba1\u548c\u4f18\u5316\u4fe1\u53f7\u5904\u7406\u7cfb\u7edf\u548c\u7535\u8def\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

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