{"id":73462,"date":"2024-01-05T12:48:48","date_gmt":"2024-01-05T04:48:48","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=73462"},"modified":"2024-01-05T12:48:48","modified_gmt":"2024-01-05T04:48:48","slug":"dxzbtxzdgjgn","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/73462.html","title":{"rendered":"30db\u4fe1\u566a\u6bd4\uff1a\u901a\u4fe1\u4e2d\u7684\u5173\u952e\u6982\u5ff5"},"content":{"rendered":"

  \u5728\u73b0\u4ee3\u901a\u8baf\u9886\u57df\uff0c30db\u4fe1\u566a\u6bd4\u662f\u4e00\u4e2a\u81f3\u5173\u91cd\u8981\u7684\u6982\u5ff5\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u8fd9\u4e00\u6982\u5ff5\u5bf9\u901a\u4fe1\u7684\u91cd\u8981\u6027\uff0c\u4ee5\u53ca\u5b83\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u4f5c\u7528\u3002<\/p>\n

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

  \u4fe1\u566a\u6bd4\uff08Signal-to-Noise Ratio\uff0cSNR\uff09\u662f\u6307\u4fe1\u53f7\u4e0e\u566a\u58f0\u4e4b\u95f4\u7684\u529f\u7387\u6216\u80fd\u91cf\u7684\u6bd4\u503c\u3002\u5728\u901a\u4fe1\u9886\u57df\u4e2d\uff0c\u4fe1\u53f7\u4ee3\u8868\u7740\u6240\u4f20\u9001\u4fe1\u606f\u7684\u5185\u5bb9\uff0c\u800c\u566a\u58f0\u5219\u662f\u7531\u5404\u79cd\u5e72\u6270\u56e0\u7d20\u5f15\u8d77\u7684\u5e72\u6270\u4fe1\u53f7\u3002<\/p>\n

  \u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u65b9\u6cd5<\/h3>\n

  \u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u516c\u5f0f\u4e3a\uff1aSNR = 10 * log10(Signal Power \/ Noise Power)\u3002\u5176\u4e2d\uff0cSignal Power\u6307\u7684\u662f\u4fe1\u53f7\u7684\u529f\u7387\uff0cNoise Power\u6307\u7684\u662f\u566a\u58f0\u7684\u529f\u7387\u3002<\/p>\n

  \u5f71\u54cd\u4fe1\u566a\u6bd4\u7684\u56e0\u7d20<\/h3>\n

  \u901a\u4fe1\u4e2d\u5f71\u54cd\u4fe1\u566a\u6bd4\u7684\u56e0\u7d20\u5305\u62ec\u4fe1\u53f7\u8870\u51cf\u3001\u4f20\u8f93\u4ecb\u8d28\u635f\u8017\u3001\u8bbe\u5907\u8d28\u91cf\u7b49\u3002\u4e86\u89e3\u5e76\u63a7\u5236\u8fd9\u4e9b\u56e0\u7d20\uff0c\u5bf9\u4e8e\u63d0\u9ad8\u901a\u4fe1\u8d28\u91cf\u81f3\u5173\u91cd\u8981\u3002<\/p>\n

30db\u4fe1\u566a\u6bd4\u5728\u901a\u4fe1\u4e2d\u7684\u91cd\u8981\u6027<\/h2>\n

  \u5728\u901a\u4fe1\u7cfb\u7edf<\/a>\u4e2d\uff0c\u4fdd\u6301\u8db3\u591f\u9ad8\u7684\u4fe1\u566a\u6bd4\u5bf9\u4e8e\u786e\u4fdd\u4fe1\u606f\u7684\u53ef\u9760\u4f20\u8f93\u81f3\u5173\u91cd\u8981\u3002\u800c30db\u4fe1\u566a\u6bd4\u4f5c\u4e3a\u4e00\u4e2a\u53c2\u8003\u503c\uff0c\u5728\u901a\u4fe1\u5de5\u7a0b\u4e2d\u5177\u6709\u91cd\u8981\u7684\u5b9e\u9645\u610f\u4e49\u3002<\/p>\n

  30db\u4fe1\u566a\u6bd4\u7684\u610f\u4e49<\/h3>\n

  30db\u4fe1\u566a\u6bd4\u4ee3\u8868\u7740\u4fe1\u53f7\u4e0e\u566a\u58f0\u4e4b\u95f4\u7684\u6bd4\u503c\u4e3a1000:1\uff0c\u8fd9\u610f\u5473\u7740\u4fe1\u53f7\u76f8\u5bf9\u4e8e\u566a\u58f0\u6709\u7740\u975e\u5e38\u9ad8\u7684\u4f18\u52bf\u3002\u5728\u8fd9\u6837\u7684\u4fe1\u566a\u6bd4\u6761\u4ef6\u4e0b\uff0c\u901a\u4fe1\u7cfb\u7edf\u53ef\u4ee5\u66f4\u597d\u5730\u62b5\u6297\u5e72\u6270\uff0c\u786e\u4fdd\u4fe1\u606f\u7684\u51c6\u786e\u4f20\u8f93\u3002<\/p>\n

  30db\u4fe1\u566a\u6bd4\u5728\u6570\u5b57\u901a\u4fe1\u4e2d\u7684\u5e94\u7528<\/h3>\n

  \u5728\u6570\u5b57\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c\u8981\u6c42\u8f83\u9ad8\u7684\u4fe1\u566a\u6bd4<\/a>\u662f\u4fdd\u8bc1\u6570\u636e\u4f20\u8f93\u8d28\u91cf\u7684\u5173\u952e\u3002\u7279\u522b\u662f\u5728\u9ad8\u901f\u6570\u636e\u4f20\u8f93\u4e2d\uff0c30db\u4fe1\u566a\u6bd4\u53ef\u4ee5\u6709\u6548\u51cf\u5c11\u4f20\u8f93\u9519\u8bef\uff0c\u63d0\u9ad8\u901a\u4fe1\u6548\u7387\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u4fe1\u566a\u6bd4\u662f\u901a\u4fe1\u9886\u57df\u4e2d\u7684\u91cd\u8981\u6982\u5ff5\uff0c\u800c30db\u4fe1\u566a\u6bd4\u4f5c\u4e3a\u4e00\u4e2a\u53c2\u8003\u503c\uff0c\u5728\u901a\u4fe1\u5de5\u7a0b\u4e2d\u5177\u6709\u91cd\u8981\u7684\u5b9e\u9645\u610f\u4e49\u3002<\/strong>\u4e86\u89e3\u4fe1\u566a\u6bd4\u7684\u5f71\u54cd\u56e0\u7d20\uff0c\u4ee5\u53ca\u5982\u4f55\u4fdd\u6301\u8db3\u591f\u9ad8\u7684\u4fe1\u566a\u6bd4\uff0c\u5bf9\u4e8e\u786e\u4fdd\u901a\u4fe1\u8d28\u91cf\u81f3\u5173\u91cd\u8981\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5728\u73b0\u4ee3\u901a\u8baf\u9886\u57df\uff0c30db\u4fe1\u566a\u6bd4\u662f\u4e00\u4e2a\u81f3\u5173\u91cd\u8981\u7684\u6982\u5ff5\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u8fd9\u4e00\u6982\u5ff5\u5bf9\u901a\u4fe1\u7684\u91cd\u8981\u6027\uff0c\u4ee5\u53ca\u5b83\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u4f5c\u7528\u3002\u4ec0\u4e48\u662f\u4fe1\u566a\u6bd4\uff1f\u4fe1\u566a\u6bd4\uff08Signal-to-No<\/p>\n","protected":false},"author":1,"featured_media":64183,"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-73462","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\/73462","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=73462"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/73462\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/64183"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=73462"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=73462"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=73462"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}