{"id":29239,"date":"2023-09-17T21:21:14","date_gmt":"2023-09-17T13:21:14","guid":{"rendered":"\/\/www.dealsbon.com\/?p=29239"},"modified":"2023-09-17T21:21:14","modified_gmt":"2023-09-17T13:21:14","slug":"cbshgstd","status":"publish","type":"post","link":"\/\/www.dealsbon.com\/blog\/29239.html","title":{"rendered":"\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u63a8\u5bfc"},"content":{"rendered":"

  \u4f20\u64ad\u635f\u8017\u516c\u5f0f\u662f\u4e00\u79cd\u7528\u4e8e\u8ba1\u7b97\u7ed9\u5b9a\u6761\u4ef6\u4e0b\u4fe1\u53f7\u4f20\u64ad\u635f\u8017\u7684\u6570\u5b66\u8868\u8fbe\u5f0f\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u4fe1\u53f7\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7684\u8870\u51cf\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u4f20\u64ad\u7684\u73b0\u8c61\u548c\u89c4\u5f8b\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u7684\u63a8\u5bfc\u8fc7\u7a0b\uff0c\u4ee5\u53ca\u5b83\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/p>\n

\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u7684\u57fa\u672c\u6982\u5ff5<\/h2>\n

  \u4f20\u64ad\u635f\u8017\u516c\u5f0f\u662f\u4e00\u79cd\u7528\u6570\u5b66\u8868\u8fbe\u5f0f\u8868\u793a\u7684\u4fe1\u53f7\u4f20\u64ad\u635f\u8017\u7684\u6a21\u578b\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u4fe1\u53f7\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7684\u8870\u51cf\u7a0b\u5ea6\u3002\u5b83\u7684\u57fa\u672c\u5f62\u5f0f\u4e3a\uff1a<\/p>\n

  L = 10log10<\/sub>(Pt<\/sub>\/Pr<\/sub>)<\/p>\n

\u516c\u5f0f\u89e3\u91ca<\/h3>\n

  L\u4ee3\u8868\u4f20\u64ad\u635f\u8017\uff0c\u5355\u4f4d\u4e3adB\uff1bPt<\/sub>\u548cPr<\/sub>\u5206\u522b\u4ee3\u8868\u53d1\u5c04\u529f\u7387\u548c\u63a5\u6536\u529f\u7387\uff0c\u5355\u4f4d\u4e3aW\u3002\u5176\u4e2dlog10<\/sub>\u8868\u793a\u4ee510\u4e3a\u5e95\u7684\u5bf9\u6570\u3002<\/p>\n

\u63a8\u5bfc\u8fc7\u7a0b<\/h3>\n

  \u6211\u4eec\u9996\u5148\u6765\u770b\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff0c\u5047\u8bbe\u6211\u4eec\u6709\u4e00\u4e2a\u53d1\u5c04\u529f\u7387\u4e3a1W\u7684\u4fe1\u53f7\uff0c\u7ecf\u8fc7\u4e00\u5b9a\u8ddd\u79bb\u540e\u7684\u63a5\u6536\u529f\u7387\u4e3a0.1W\uff0c\u8fd9\u65f6\u6211\u4eec\u53ef\u4ee5\u7528\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u8ba1\u7b97\u51fa\u4fe1\u53f7\u4f20\u64ad\u635f\u8017\u7684\u5927\u5c0f\uff1a<\/p>\n

  L = 10log10<\/sub>(1W\/0.1W) = 10log10<\/sub>(10) = 10\u00d71 = 10dB<\/p>\n

  \u4ece\u4e0a\u9762\u7684\u4f8b\u5b50\u53ef\u4ee5\u770b\u51fa\uff0c\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u7684\u57fa\u672c\u601d\u60f3\u662f\u5c06\u4fe1\u53f7\u4f20\u64ad\u635f\u8017\u8f6c\u6362\u4e3a\u4e00\u4e2a\u5bf9\u6570\uff0c\u4ece\u800c\u66f4\u5bb9\u6613\u8ba1\u7b97\u51fa\u635f\u8017\u7684\u5927\u5c0f\u3002<\/p>\n

\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u7684\u5b9e\u9645\u5e94\u7528<\/h2>\n

  \u4f20\u64ad\u635f\u8017\u516c\u5f0f\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u4fe1\u53f7\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7684\u8870\u51cf\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u4f20\u64ad\u7684\u73b0\u8c61\u548c\u89c4\u5f8b\u3002<\/p>\n

  \u4f8b\u5982\uff0c\u5728\u65e0\u7ebf\u7535\u9891\u7387\u4f20\u64ad\u4e2d\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u6765\u8ba1\u7b97\u4fe1\u53f7\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7684\u8870\u51cf\uff0c\u4ece\u800c\u8ba1\u7b97\u51fa\u4fe1\u53f7\u5728\u4e00\u5b9a\u8ddd\u79bb\u5185\u7684\u6709\u6548\u53d1\u5c04\u529f\u7387\uff0c\u8fdb\u800c\u5224\u65ad\u4fe1\u53f7\u662f\u5426\u53ef\u4ee5\u5b9e\u73b0\u6709\u6548\u7684\u4f20\u8f93\u3002<\/p>\n

  \u6b64\u5916\uff0c\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u8fd8\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u4fe1\u53f7\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7684\u8870\u51cf\uff0c\u4ece\u800c\u5224\u65ad\u4fe1\u53f7\u5728\u4e00\u5b9a\u8ddd\u79bb\u5185\u662f\u5426\u53ef\u4ee5\u8fbe\u5230\u6709\u6548\u4f20\u8f93\u7684\u8981\u6c42\u3002<\/p>\n

\u603b\u7ed3<\/h2>\n

  \u672c\u6587\u4ecb\u7ecd\u4e86\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u7684\u63a8\u5bfc\u8fc7\u7a0b\uff0c\u4ee5\u53ca\u5b83\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\u7684\u91cd\u8981\u6027\u3002<\/strong>\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u4fe1\u53f7\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7684\u8870\u51cf\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u4f20\u64ad\u7684\u73b0\u8c61\u548c\u89c4\u5f8b\u3002\u5b83\u7684\u57fa\u672c\u5f62\u5f0f\u4e3a\uff1aL = 10log10<\/sub>(Pt<\/sub>\/Pr<\/sub>)\uff0c\u5176\u4e2dL\u4ee3\u8868\u4f20\u64ad\u635f\u8017\uff0c\u5355\u4f4d\u4e3adB\uff1bPt<\/sub>\u548cPr<\/sub>\u5206\u522b\u4ee3\u8868\u53d1\u5c04\u529f\u7387\u548c\u63a5\u6536\u529f\u7387\uff0c\u5355\u4f4d\u4e3aW\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u662f\u4e00\u79cd\u7528\u4e8e\u8ba1\u7b97\u7ed9\u5b9a\u6761\u4ef6\u4e0b\u4fe1\u53f7\u4f20\u64ad\u635f\u8017\u7684\u6570\u5b66\u8868\u8fbe\u5f0f\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u8ba1\u7b97\u4fe1\u53f7\u5728\u4f20\u64ad\u8fc7\u7a0b\u4e2d\u7684\u8870\u51cf\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u4f20\u64ad\u7684\u73b0\u8c61\u548c\u89c4\u5f8b\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u4f20\u64ad\u635f\u8017\u516c\u5f0f\u7684\u63a8<\/p>\n","protected":false},"author":1,"featured_media":3671,"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":[52],"class_list":["post-29239","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-wxtx"],"_links":{"self":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts\/29239"}],"collection":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/comments?post=29239"}],"version-history":[{"count":0,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/posts\/29239\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/media\/3671"}],"wp:attachment":[{"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/media?parent=29239"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/categories?post=29239"},{"taxonomy":"post_tag","embeddable":true,"href":"\/\/www.dealsbon.com\/wp-json\/wp\/v2\/tags?post=29239"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}