{"id":67403,"date":"2023-12-21T13:11:21","date_gmt":"2023-12-21T05:11:21","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=67403"},"modified":"2023-12-21T13:11:21","modified_gmt":"2023-12-21T05:11:21","slug":"xzbwdzmjs","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/67403.html","title":{"rendered":"\u4fe1\u566a\u6bd4\u4e3a30db\u600e\u4e48\u8ba1\u7b97"},"content":{"rendered":"

  \u4fe1\u566a\u6bd4\u662f\u4e00\u79cd\u8861\u91cf\u4fe1\u53f7\u8d28\u91cf\u7684\u6307\u6807\uff0c\u800c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u5219\u6d89\u53ca\u4e00\u5b9a\u7684\u6570\u5b66\u77e5\u8bc6\u548c\u6280\u5de7\u3002\u672c\u6587\u5c06\u9488\u5bf9\u4fe1\u566a\u6bd4\u4e3a30db\u7684\u8ba1\u7b97\u65b9\u6cd5\u8fdb\u884c\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u52a0\u6df1\u5165\u5730\u7406\u89e3\u8fd9\u4e00\u6982\u5ff5\u3002<\/p>\n

\u4ec0\u4e48\u662f\u4fe1\u566a\u6bd4\uff1f<\/h2>\n

  \u5728\u7535\u5b50\u901a\u4fe1\u548c\u4fe1\u53f7\u5904\u7406\u9886\u57df\uff0c\u4fe1\u566a\u6bd4\u662f\u6307\u6709\u7528\u4fe1\u53f7\u548c\u566a\u58f0\u4fe1\u53f7\u4e4b\u95f4\u7684\u6bd4\u503c\uff0c\u7528\u4ee5\u8861\u91cf\u4fe1\u53f7\u7684\u6e05\u6670\u5ea6\u548c\u7a33\u5b9a\u6027\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u4fe1\u566a\u6bd4\u7684\u6570\u503c\u901a\u5e38\u4ee5db\uff08\u5206\u8d1d\uff09\u4e3a\u5355\u4f4d\u3002<\/p>\n

  \u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u516c\u5f0f<\/h3>\n

  \u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1aSNR(db) = 10 * log10(Ps\/Pn)\uff0c\u5176\u4e2dSNR\u4e3a\u4fe1\u566a\u6bd4\uff08\u4ee5\u5206\u8d1d\u4e3a\u5355\u4f4d\uff09\uff0cPs\u4e3a\u6709\u7528\u4fe1\u53f7\u7684\u529f\u7387\uff0cPn\u4e3a\u566a\u58f0\u7684\u529f\u7387\u3002\u901a\u8fc7\u8fd9\u4e2a\u516c\u5f0f\uff0c\u6211\u4eec\u53ef\u4ee5\u5c06\u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u8f6c\u5316\u4e3a\u529f\u7387\u7684\u6bd4\u503c\uff0c\u4ece\u800c\u66f4\u52a0\u76f4\u89c2\u5730\u7406\u89e3\u4fe1\u53f7\u4e0e\u566a\u58f0\u4e4b\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n

  \u4fe1\u566a\u6bd4<\/a>\u7684\u610f\u4e49<\/h3>\n

  \u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u4fe1\u566a\u6bd4\u7684\u6570\u503c\u8d8a\u9ad8\uff0c\u8868\u793a\u6709\u7528\u4fe1\u53f7\u76f8\u5bf9\u4e8e\u566a\u58f0\u7684\u529f\u7387\u8d8a\u5927\uff0c\u4fe1\u53f7\u7684\u8d28\u91cf\u8d8a\u597d\uff0c\u901a\u5e38\u53ef\u4ee5\u66f4\u5bb9\u6613\u5730\u88ab\u63a5\u6536\u548c\u5904\u7406\u3002\u56e0\u6b64\uff0c\u4fe1\u566a\u6bd4\u5728\u65e0\u7ebf\u901a\u4fe1<\/a>\u3001\u97f3\u9891\u5904\u7406\u7b49\u9886\u57df\u90fd\u5177\u6709\u91cd\u8981\u7684\u610f\u4e49\u3002<\/p>\n

\u4fe1\u566a\u6bd4\u4e3a30db\u7684\u8ba1\u7b97\u65b9\u6cd5<\/h2>\n

  \u5f53\u6211\u4eec\u9700\u8981\u8ba1\u7b97\u4fe1\u566a\u6bd4\u4e3a30db\u65f6\uff0c\u9996\u5148\u9700\u8981\u660e\u786e\u6709\u7528\u4fe1\u53f7\u548c\u566a\u58f0\u7684\u529f\u7387\u503c\u3002\u7136\u540e\uff0c\u5c06\u8fd9\u4e9b\u6570\u503c\u4ee3\u5165\u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u516c\u5f0f\u4e2d\uff0c\u5373\u53ef\u5f97\u5230\u5bf9\u5e94\u7684\u7ed3\u679c\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u80fd\u8fd8\u9700\u8981\u8003\u8651\u529f\u7387\u5355\u4f4d\u7684\u8f6c\u6362\u548c\u7cbe\u786e\u8ba1\u7b97\u7684\u65b9\u6cd5\u3002<\/p>\n

  \u4e3e\u4f8b\u8bf4\u660e<\/h3>\n

  \u4e3e\u4f8b\u6765\u8bf4\uff0c\u5047\u8bbe\u6709\u7528\u4fe1\u53f7\u7684\u529f\u7387\u4e3a100\uff0c\u566a\u58f0\u7684\u529f\u7387\u4e3a1\uff0c\u90a3\u4e48\u53ef\u4ee5\u6309\u7167\u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u516c\u5f0f\u8fdb\u884c\u8ba1\u7b97\uff0c\u6700\u7ec8\u5f97\u5230\u4fe1\u566a\u6bd4\u4e3a30db\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u9700\u8981\u7cbe\u786e\u7684\u6570\u5b57\u8ba1\u7b97\u548c\u5bf9\u516c\u5f0f\u7684\u6b63\u786e\u7406\u89e3\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u76f8\u4fe1\u8bfb\u8005\u5bf9\u4fe1\u566a\u6bd4\u7684\u6982\u5ff5\u548c\u8ba1\u7b97\u65b9\u6cd5\u6709\u4e86\u66f4\u6e05\u6670\u7684\u8ba4\u8bc6\u3002<\/strong>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u6211\u4eec\u9700\u8981\u6839\u636e\u5177\u4f53\u60c5\u51b5\uff0c\u51c6\u786e\u5730\u8ba1\u7b97\u4fe1\u566a\u6bd4\uff0c\u4ee5\u4fbf\u66f4\u597d\u5730\u8861\u91cf\u548c\u6539\u8fdb\u4fe1\u53f7\u8d28\u91cf\u3002\u5e0c\u671b\u672c\u6587\u80fd\u591f\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u548c\u5e94\u7528\u4fe1\u566a\u6bd4\u8fd9\u4e00\u91cd\u8981\u6982\u5ff5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4fe1\u566a\u6bd4\u662f\u4e00\u79cd\u8861\u91cf\u4fe1\u53f7\u8d28\u91cf\u7684\u6307\u6807\uff0c\u800c\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u5219\u6d89\u53ca\u4e00\u5b9a\u7684\u6570\u5b66\u77e5\u8bc6\u548c\u6280\u5de7\u3002\u672c\u6587\u5c06\u9488\u5bf9\u4fe1\u566a\u6bd4\u4e3a30db\u7684\u8ba1\u7b97\u65b9\u6cd5\u8fdb\u884c\u8be6\u7ec6\u4ecb\u7ecd\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u52a0\u6df1\u5165\u5730\u7406\u89e3\u8fd9\u4e00\u6982\u5ff5\u3002<\/p>\n","protected":false},"author":1,"featured_media":64231,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-global-header-display":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","footnotes":""},"categories":[36],"tags":[185],"class_list":["post-67403","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-xzb"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/67403","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/comments?post=67403"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/67403\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/64231"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=67403"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=67403"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=67403"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}