{"id":46827,"date":"2023-09-28T00:08:03","date_gmt":"2023-09-27T16:08:03","guid":{"rendered":"https:\/\/www.techphant.cn\/?p=46827"},"modified":"2023-09-28T00:08:03","modified_gmt":"2023-09-27T16:08:03","slug":"pglpmdsmst","status":"publish","type":"post","link":"https:\/\/www.techphant.cn\/blog\/46827.html","title":{"rendered":"PSD\u529f\u7387\u8c31\u5bc6\u5ea6\uff1a\u4ec0\u4e48\u662f\u5b83\uff1f"},"content":{"rendered":"<p>&emsp;&emsp;PSD\u529f\u7387\u8c31\u5bc6\u5ea6\uff08Power Spectral Density\uff09\u662f\u4e00\u79cd\u8868\u793a\u4fe1\u53f7\u529f\u7387\u5206\u5e03\u7684\u6280\u672f\uff0c\u5b83\u901a\u8fc7\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u548c\u529f\u7387\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u4e0d\u540c\u7279\u6027\u3002\u5b83\u53ef\u4ee5\u63d0\u4f9b\u91cd\u8981\u7684\u4fe1\u606f\uff0c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u63a7\u5236\u3001\u6d4b\u91cf\u548c\u4f18\u5316\u4fe1\u53f7\u6027\u80fd\u3002<\/p>\n<h2 style=\"text-align: center;\">\u4ec0\u4e48\u662fPSD\u529f\u7387\u8c31\u5bc6\u5ea6\uff1f<\/h2>\n<p>&emsp;&emsp;PSD\u529f\u7387\u8c31\u5bc6\u5ea6\u662f\u4e00\u79cd\u7528\u6765\u8868\u793a\u4fe1\u53f7\u529f\u7387\u5206\u5e03\u7684\u6280\u672f\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u6d4b\u91cf\u548c\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u548c\u529f\u7387\uff0c\u4ece\u800c\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u4e0d\u540c\u7279\u6027\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u68c0\u6d4b\u566a\u58f0\u6e90\uff0c\u8bc6\u522b\u4fe1\u53f7\u7684\u6a21\u5f0f\uff0c\u751a\u81f3\u53ef\u4ee5\u7528\u6765\u4f30\u8ba1\u4fe1\u53f7\u7684\u4fe1\u566a\u6bd4\uff08SNR\uff09\u3002<\/p>\n<p>&emsp;&emsp;PSD\u529f\u7387\u8c31\u5bc6\u5ea6\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u63a7\u5236\u3001\u6d4b\u91cf\u548c\u4f18\u5316\u4fe1\u53f7\u6027\u80fd\u3002\u5b83\u4e5f\u53ef\u4ee5\u7528\u6765\u68c0\u6d4b\u67d0\u4e9b\u7c7b\u578b\u7684\u566a\u58f0\uff0c\u5982\u632f\u52a8\u548c\u7535\u78c1\u5e72\u6270\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u63a7\u5236\u566a\u58f0\u3002<\/p>\n<h2 style=\"text-align: center;\">PSD\u529f\u7387\u8c31\u5bc6\u5ea6\u7684\u5e94\u7528<\/h2>\n<p>&emsp;&emsp;PSD\u529f\u7387\u8c31\u5bc6\u5ea6\u53ef\u4ee5\u7528\u6765\u6d4b\u91cf\u548c\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u548c\u529f\u7387\uff0c\u4ece\u800c\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u4e0d\u540c\u7279\u6027\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u68c0\u6d4b\u566a\u58f0\u6e90\uff0c\u8bc6\u522b\u4fe1\u53f7\u7684\u6a21\u5f0f\uff0c\u751a\u81f3\u53ef\u4ee5\u7528\u6765\u4f30\u8ba1\u4fe1\u53f7\u7684\u4fe1\u566a\u6bd4\uff08SNR\uff09\u3002<\/p>\n<h3>&emsp;&emsp;1.\u7528\u4e8e\u6d4b\u91cf\u548c\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u548c\u529f\u7387<\/h3>\n<p>&emsp;&emsp;PSD\u529f\u7387\u8c31\u5bc6\u5ea6\u53ef\u4ee5\u7528\u6765\u6d4b\u91cf\u548c\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u548c\u529f\u7387\uff0c\u4ece\u800c\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u4e0d\u540c\u7279\u6027\u3002\u5b83\u53ef\u4ee5\u7528\u6765\u68c0\u6d4b\u566a\u58f0\u6e90\uff0c\u8bc6\u522b\u4fe1\u53f7\u7684\u6a21\u5f0f\uff0c\u751a\u81f3\u53ef\u4ee5\u7528\u6765\u4f30\u8ba1\u4fe1\u53f7\u7684\u4fe1\u566a\u6bd4\uff08SNR\uff09\u3002<\/p>\n<h3>&emsp;&emsp;2.\u7528\u4e8e\u68c0\u6d4b\u566a\u58f0\u6e90<\/h3>\n<p>&emsp;&emsp;PSD\u529f\u7387\u8c31\u5bc6\u5ea6\u53ef\u4ee5\u7528\u6765\u68c0\u6d4b\u67d0\u4e9b\u7c7b\u578b\u7684\u566a\u58f0\uff0c\u5982\u632f\u52a8\u548c\u7535\u78c1\u5e72\u6270\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u63a7\u5236\u566a\u58f0\u3002\u5b83\u4e5f\u53ef\u4ee5\u7528\u6765\u68c0\u6d4b\u548c\u8bca\u65ad\u7cfb\u7edf\u4e2d\u7684\u6545\u969c\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u63a7\u5236\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n<h3>&emsp;&emsp;3.\u7528\u4e8e\u8bc6\u522b\u4fe1\u53f7\u6a21\u5f0f<\/h3>\n<p>&emsp;&emsp;PSD\u529f\u7387\u8c31\u5bc6\u5ea6\u53ef\u4ee5\u7528\u6765\u8bc6\u522b\u4fe1\u53f7\u7684\u6a21\u5f0f\uff0c\u4ece\u800c\u66f4\u597d\u5730\u63a7\u5236\u548c\u6d4b\u91cf\u4fe1\u53f7\u6027\u80fd\u3002\u5b83\u4e5f\u53ef\u4ee5\u7528\u6765\u8bc6\u522b\u7cfb\u7edf\u4e2d\u7684\u6a21\u5f0f\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u63a7\u5236\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n<h2 style=\"text-align: center;\">\u603b\u7ed3<\/h2>\n<p>&emsp;&emsp;<strong>PSD\u529f\u7387\u8c31\u5bc6\u5ea6\u662f\u4e00\u79cd\u7528\u6765\u8868\u793a\u4fe1\u53f7\u529f\u7387\u5206\u5e03\u7684\u6280\u672f\uff0c\u5b83\u53ef\u4ee5\u7528\u6765\u6d4b\u91cf\u548c\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u548c\u529f\u7387\uff0c\u4ece\u800c\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u4e0d\u540c\u7279\u6027\u3002<\/strong>\u5b83\u53ef\u4ee5\u7528\u6765\u68c0\u6d4b\u566a\u58f0\u6e90\uff0c\u8bc6\u522b\u4fe1\u53f7\u7684\u6a21\u5f0f\uff0c\u751a\u81f3\u53ef\u4ee5\u7528\u6765\u4f30\u8ba1\u4fe1\u53f7\u7684\u4fe1\u566a\u6bd4\uff08SNR\uff09\u3002\u5b83\u4e5f\u53ef\u4ee5\u7528\u6765\u68c0\u6d4b\u67d0\u4e9b\u7c7b\u578b\u7684\u566a\u58f0\uff0c\u5982\u632f\u52a8\u548c\u7535\u78c1\u5e72\u6270\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u63a7\u5236\u566a\u58f0\u3002PSD\u529f\u7387\u8c31\u5bc6\u5ea6\u53ef\u4ee5\u4e3a\u6211\u4eec\u63d0\u4f9b\u91cd\u8981\u7684\u4fe1\u606f\uff0c\u5e2e\u52a9\u6211\u4eec\u66f4\u597d\u5730\u63a7\u5236\u3001\u6d4b\u91cf\u548c\u4f18\u5316\u4fe1\u53f7\u6027\u80fd\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>PSD\u529f\u7387\u8c31\u5bc6\u5ea6\uff08PowerSpectralDensity\uff09\u662f\u4e00\u79cd\u8868\u793a\u4fe1\u53f7\u529f\u7387\u5206\u5e03\u7684\u6280\u672f\uff0c\u5b83\u901a\u8fc7\u5206\u6790\u4fe1\u53f7\u7684\u9891\u7387\u548c\u529f\u7387\uff0c\u53ef\u4ee5\u66f4\u597d\u5730\u7406\u89e3\u4fe1\u53f7\u7684\u4e0d\u540c\u7279\u6027\u3002\u5b83\u53ef\u4ee5\u63d0\u4f9b\u91cd\u8981\u7684\u4fe1<\/p>\n","protected":false},"author":1,"featured_media":4132,"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":[305],"class_list":["post-46827","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-dzjs"],"_links":{"self":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/46827","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=46827"}],"version-history":[{"count":0,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/posts\/46827\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media\/4132"}],"wp:attachment":[{"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/media?parent=46827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/categories?post=46827"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.techphant.cn\/wp-json\/wp\/v2\/tags?post=46827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}