{"id":87971,"date":"2024-01-29T11:29:25","date_gmt":"2024-01-29T03:29:25","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=87971"},"modified":"2024-01-29T11:29:29","modified_gmt":"2024-01-29T03:29:29","slug":"zsglbhxzbdzh","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/87971.html","title":{"rendered":"\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u7684\u8f6c\u6362"},"content":{"rendered":"\n<p>\u3000\u3000\u5728\u901a\u4fe1\u7cfb\u7edf\u4e2d\uff0c<strong>\u566a\u58f0\u529f\u7387\u6bd4(Noise Power Ratio\uff0c\u7b80\u79f0NPR)<\/strong>\u548c<strong>\u4fe1\u566a\u6bd4(Signal-to-Noise Ratio\uff0c\u7b80\u79f0SNR)<\/strong>\u662f\u4e24\u4e2a\u91cd\u8981\u7684\u6027\u80fd\u6307\u6807\u3002\u4e86\u89e3\u8fd9\u4e24\u4e2a\u6307\u6807\u7684\u8f6c\u6362\u5173\u7cfb\u5bf9\u4e8e\u4f18\u5316\u901a\u4fe1\u7cfb\u7edf\u7684\u8bbe\u8ba1\u548c\u6027\u80fd\u8bc4\u4f30\u81f3\u5173\u91cd\u8981\u3002\u672c\u6587\u5c06\u6df1\u5165\u63a2\u8ba8\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u7684\u6982\u5ff5\u3001\u8ba1\u7b97\u65b9\u6cd5\u4ee5\u53ca\u5b83\u4eec\u5728\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e00\u3001\u566a\u58f0\u529f\u7387\u6bd4(NPR)\u7684\u5b9a\u4e49\u548c\u8ba1\u7b97\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u3000\u3000\u566a\u58f0\u529f\u7387\u6bd4\u662f\u6307\u4fe1\u53f7\u4e0e\u566a\u58f0\u529f\u7387\u4e4b\u95f4\u7684\u6bd4\u503c\uff0c\u5b83\u662f\u8861\u91cf\u4fe1\u53f7\u8d28\u91cf\u7684\u91cd\u8981\u6307\u6807\u3002\u566a\u58f0\u529f\u7387\u6bd4\u7684\u8ba1\u7b97\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>NPR = 10 * log10(Ps \/ Pn)<\/strong><\/p>\n\n\n\n<p>\u3000\u3000<strong>\u5176\u4e2d\uff0cPs\u8868\u793a\u4fe1\u53f7\u529f\u7387\uff0cPn\u8868\u793a\u566a\u58f0\u529f\u7387\u3002\u566a\u58f0\u529f\u7387\u6bd4\u901a\u5e38\u4ee5\u5206\u8d1d(dB)\u4e3a\u5355\u4f4d\u8fdb\u884c\u8868\u793a\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e8c\u3001\u4fe1\u566a\u6bd4(SNR)\u7684\u5b9a\u4e49\u548c\u8ba1\u7b97\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u3000\u3000\u4fe1\u566a\u6bd4\u662f\u6307\u4fe1\u53f7\u529f\u7387\u4e0e\u566a\u58f0\u529f\u7387\u4e4b\u95f4\u7684\u6bd4\u503c\uff0c\u5b83\u8861\u91cf\u4e86\u4fe1\u53f7\u4e0e\u566a\u58f0\u7684\u76f8\u5bf9\u5f3a\u5ea6\u3002\u4fe1\u566a\u6bd4\u7684\u8ba1\u7b97\u65b9\u6cd5\u5982\u4e0b\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>SNR = 10 * log10(Ps \/ Pn)<\/strong><\/p>\n\n\n\n<p>\u3000\u3000<strong>\u5176\u4e2d\uff0cPs\u8868\u793a\u4fe1\u53f7\u529f\u7387\uff0cPn\u8868\u793a\u566a\u58f0\u529f\u7387\u3002\u4fe1\u566a\u6bd4\u4e5f\u901a\u5e38\u4ee5\u5206\u8d1d(dB)\u4e3a\u5355\u4f4d\u8fdb\u884c\u8868\u793a\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u4e09\u3001\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u7684\u8f6c\u6362\u5173\u7cfb<\/h2>\n\n\n\n<p>\u3000\u3000\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u4e4b\u95f4\u5b58\u5728\u7740\u4e00\u79cd\u8f6c\u6362\u5173\u7cfb\u3002\u5f53\u5df2\u77e5\u4fe1\u566a\u6bd4\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u516c\u5f0f\u8ba1\u7b97\u566a\u58f0\u529f\u7387\u6bd4\uff1a<\/p>\n\n\n\n<p>\u3000\u3000<strong>NPR = SNR + 10 * log10(BW)<\/strong><\/p>\n\n\n\n<p>\u3000\u3000<strong>\u5176\u4e2d\uff0cBW\u8868\u793a\u4fe1\u53f7\u5e26\u5bbd\u3002<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u56db\u3001\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u5728\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528<\/h2>\n\n\n\n<p>\u3000\u3000<strong>1. \u4fe1\u53f7\u4f20\u8f93\u8d28\u91cf\u8bc4\u4f30<\/strong>\uff1a\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u53ef\u4ee5\u7528\u4e8e\u8bc4\u4f30\u4fe1\u53f7\u4f20\u8f93\u7684\u8d28\u91cf\u3002\u8f83\u9ad8\u7684\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u610f\u5473\u7740\u8f83\u4f4e\u7684\u566a\u58f0\u5e72\u6270\uff0c\u4ece\u800c\u63d0\u9ad8\u4e86\u4fe1\u53f7\u7684\u53ef\u9760\u6027\u548c\u6e05\u6670\u5ea6\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>2. \u4fe1\u9053\u5bb9\u91cf\u8ba1\u7b97<\/strong>\uff1a\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u53ef\u4ee5\u7528\u4e8e\u8ba1\u7b97\u4fe1\u9053\u7684\u5bb9\u91cf\u3002\u4fe1\u9053\u5bb9\u91cf\u662f\u6307\u5728\u7ed9\u5b9a\u4fe1\u566a\u6bd4\u6761\u4ef6\u4e0b\uff0c\u4fe1\u9053\u53ef\u4ee5\u4f20\u8f93\u7684\u6700\u5927\u4fe1\u606f\u91cf\u3002\u901a\u8fc7\u4f18\u5316\u4fe1\u566a\u6bd4\u548c\u566a\u58f0\u529f\u7387\u6bd4\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4fe1\u9053\u7684\u5bb9\u91cf\u3002<\/p>\n\n\n\n<p>\u3000\u3000<strong>3. \u901a\u4fe1\u7cfb\u7edf\u8bbe\u8ba1<\/strong>\uff1a\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u662f\u901a\u4fe1\u7cfb\u7edf\u8bbe\u8ba1\u4e2d\u7684\u91cd\u8981\u53c2\u8003\u6307\u6807\u3002\u5728\u8bbe\u8ba1\u901a\u4fe1\u7cfb\u7edf\u65f6\uff0c\u9700\u8981\u6839\u636e\u9884\u671f\u7684\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u8981\u6c42\u6765\u9009\u62e9\u5408\u9002\u7684\u8c03\u5236\u65b9\u5f0f\u3001\u7f16\u7801\u65b9\u6848\u548c\u4fe1\u9053\u53c2\u6570\u7b49\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u3000\u3000\u7ed3\u8bba\uff1a<\/h2>\n\n\n\n<p>\u3000\u3000<strong>\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u7684\u6982\u5ff5\u3001\u8ba1\u7b97\u65b9\u6cd5\u4ee5\u53ca\u5b83\u4eec\u5728\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u3002\u4e86\u89e3\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u4e4b\u95f4\u7684\u8f6c\u6362\u5173\u7cfb\uff0c\u5bf9\u4e8e\u4f18\u5316\u901a\u4fe1\u7cfb\u7edf\u7684\u8bbe\u8ba1\u548c\u6027\u80fd\u8bc4\u4f30\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/strong>\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u9700\u8981\u6839\u636e\u5177\u4f53\u9700\u6c42\u548c\u7cfb\u7edf\u8981\u6c42\u6765\u9009\u62e9\u5408\u9002\u7684\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u503c\uff0c\u4ee5\u5b9e\u73b0\u9ad8\u8d28\u91cf\u7684\u4fe1\u53f7\u4f20\u8f93\u548c\u63d0\u9ad8\u901a\u4fe1\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6587\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u7684\u6982\u5ff5\u3001\u8ba1\u7b97\u65b9\u6cd5\u4ee5\u53ca\u5b83\u4eec\u5728\u901a\u4fe1\u7cfb\u7edf\u4e2d\u7684\u5e94\u7528\u3002\u4e86\u89e3\u566a\u58f0\u529f\u7387\u6bd4\u548c\u4fe1\u566a\u6bd4\u4e4b\u95f4\u7684\u8f6c\u6362\u5173\u7cfb\uff0c\u5bf9\u4e8e\u4f18\u5316\u901a\u4fe1\u7cfb\u7edf\u7684\u8bbe\u8ba1\u548c\u6027\u80fd\u8bc4\u4f30\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/p>\n","protected":false},"author":1,"featured_media":65264,"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":[114],"class_list":["post-87971","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-plzs"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/87971","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=87971"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/87971\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/65264"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=87971"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=87971"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=87971"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}