{"id":9251,"date":"2026-07-15T22:41:46","date_gmt":"2026-07-15T13:41:46","guid":{"rendered":"https:\/\/now0930.pe.kr\/wordpress\/?p=9251"},"modified":"2026-07-16T17:28:03","modified_gmt":"2026-07-16T08:28:03","slug":"%eb%ac%b8%ec%a0%9c-%ed%92%80%ec%9d%b4-radar","status":"publish","type":"post","link":"https:\/\/now0930.pe.kr\/wordpress\/%eb%ac%b8%ec%a0%9c-%ed%92%80%ec%9d%b4-radar\/","title":{"rendered":"\ubb38\uc81c \ud480\uc774: Radar"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\ubb38\uc81c: \ub808\uc774\ub354(Radar)\uc2dd \uc561\uc704\uacc4\uc758 FMCW(Frequency Modulated Continuous Wave) \ubc29\uc2dd\uacfc<br>\ud384\uc2a4 \ubc29\uc2dd\uc758 \uce21\uc815 \uc6d0\ub9ac\ub97c \ube44\uad50\ud558\uace0, \uc720\uc804\uc728\uc774 \ub0ae\uc740 \ub9e4\uc9c8 \uce21\uc815 \uc2dc\uc758 \uc2e0\ub8b0\uc131 \ud655\ubcf4 \ubc29\uc548\uc744<br>\uc124\uba85\ud558\uc2dc\uc624<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">[\ubb38\uc81c] \ub808\uc774\ub354 \uc561\uc704\uacc4\uc758 FMCW \ubc29\uc2dd\uacfc \ud384\uc2a4 \ubc29\uc2dd \uce21\uc815 \uc6d0\ub9ac \ube44\uad50, \uc720\uc804\uc728\uc774 \ub0ae\uc740 \ub9e4\uc9c8 \uce21\uc815\uc2dc \uc2e0\ub8b0\uc131 \ud655\ubcf4\ubc29\uc548 \uc124\uba85<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">1. \ubc30\uacbd (Radar)<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub808\uc774\ub354\ub294 \uc804\ud30c\ub97c \ubc1c\uc0ac\ud558\uc5ec \ub418\ub3cc\uc544\uc624\ub294 \uc2e0\ud638\ub97c \ubc1b\uc544 \ubb3c\uccb4\uc758 \uac70\ub9ac\uc640 \ubc29\ud5a5\uc744 \ud0d0\uc9c0\ud558\ub294 \uae30\uc220\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ub808\uc774\ub354 \uc218\uc2e0 \uc131\ub2a5\uc744 \uacb0\uc815\ud558\ub294 \uc9c0\ubc30 \ubc29\uc815\uc2dd(Radar Equation)\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<br>Pt * G\u00b2 * \u03bb\u00b2 * \u03c3<br>Pr = &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<br>R\u2074<\/li>\n\n\n\n<li>\uc778\uc790 \uc815\uc758:<\/li>\n\n\n\n<li>Pr: \uc218\uc2e0 \ud30c\uc6cc (Received Power)<\/li>\n\n\n\n<li>Pt: \uc1a1\uc2e0 \ud30c\uc6cc (Transmitted Power)<\/li>\n\n\n\n<li>G: \uc548\ud14c\ub098 \uc774\ub4dd (Antenna Gain)<\/li>\n\n\n\n<li>\u03bb (lambda): \uc804\ud30c\uc758 \ud30c\uc7a5<\/li>\n\n\n\n<li>\u03c3 (sigma): \ub808\uc774\ub354 \ubc18\uc0ac \uba74\uc801 (RCS, Radar Cross Section)<\/li>\n\n\n\n<li>R: \uce21\uc815 \ub300\uc0c1\uae4c\uc9c0\uc758 \uac70\ub9ac<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. FMCW \ubc29\uc2dd\uacfc \ud384\uc2a4 \ubc29\uc2dd \ube44\uad50<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1) \ud384\uc2a4 (Pulse) \ubc29\uc2dd<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc9c0\ubc30 \uacf5\uc2dd:<br>C * t<br>R = &#8212;&#8212;&#8212;<br>2<\/li>\n\n\n\n<li>C: \uc804\ud30c\uc758 \uc18d\ub3c4<\/li>\n\n\n\n<li>t: \uc1a1\uc218\uc2e0 \uc2dc\uac04 \ucc28\uc774 (ToF, Time of Flight)<\/li>\n\n\n\n<li>R: \uce21\uc815 \uac70\ub9ac<\/li>\n\n\n\n<li>\uce21\uc815 \uc6d0\ub9ac \ubc0f \ud55c\uacc4:<\/li>\n\n\n\n<li>\uc1a1\uc2e0 \uc548\ud14c\ub098\uc5d0\uc11c \uc804\ud30c\ub97c \uc9e7\uc740 \ud384\uc2a4 \ud615\ud0dc\ub85c \ubc29\uc0ac\ud558\uace0, \ub3cc\uc544\uc624\ub294 \ubc18\uc0ac \ud384\uc2a4\ub97c \uc218\uc2e0\ud558\uc5ec \uc774\ub3d9 \uc2dc\uac04(t)\uc744 \uce21\uc815\ud574 \uac70\ub9ac\ub97c \uad6c\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc544\uc8fc \uc9e7\uc740 \uc2dc\uac04 \uc548\uc5d0 \uc2e0\ud638\ub97c On\/Off \ud574\uc57c \ud558\ubbc0\ub85c \uace0\uc18d \uc2a4\uc704\uce6d \ud68c\ub85c \uad6c\ud604\uc5d0 \uc81c\uc57d\uc774 \ub530\ub985\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc678\ubd80 \ub178\uc774\uc988(Noise)\uc640 \uc2e4\uc81c \ubc18\uc0ac \uc2e0\ud638\ub97c \uad6c\ubd84\ud558\uae30 \uc5b4\ub824\uc6cc \uc815\ubc00\ud55c \uac70\ub9ac \uce21\uc815\uc5d0 \ud55c\uacc4\uac00 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2) FMCW (Frequency Modulated Continuous Wave) \ubc29\uc2dd<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc9c0\ubc30 \uacf5\uc2dd:<br>fb<br>R = &#8212;&#8212;&#8212;&#8212;-<br>2 * C * k<\/li>\n\n\n\n<li>fb: \ube44\ud2b8 \uc8fc\ud30c\uc218 (fb = ft &#8211; fr, \uc1a1\uc218\uc2e0 \uc8fc\ud30c\uc218 \ucc28\uc774)<\/li>\n\n\n\n<li>C: \uc804\ud30c\uc758 \uc18d\ub3c4<\/li>\n\n\n\n<li>k: \uc8fc\ud30c\uc218 \ubcc0\uc870 \uae30\uc6b8\uae30 (Sweep Rate)<\/li>\n\n\n\n<li>\uce21\uc815 \uc6d0\ub9ac \ubc0f \uc7a5\uc810:<\/li>\n\n\n\n<li>\uc2dc\uac04\uc5d0 \ub530\ub77c \uc8fc\ud30c\uc218\uac00 \uc120\ud615\uc801\uc73c\ub85c \ubcc0\ud654\ud558\ub294 \uc5f0\uc18d\ud30c\ub97c \uc1a1\uc2e0\ud55c \ub4a4, \ubc18\uc0ac\ub418\uc5b4 \ub3cc\uc544\uc628 \uc2e0\ud638\uc640\uc758 \uc8fc\ud30c\uc218 \ucc28\uc774(fb)\ub97c \uce21\uc815\ud558\uc5ec \uac70\ub9ac\ub85c \ud658\uc0b0\ud569\ub2c8\ub2e4. (\uc2dc\uac04 \uce21\uc815 \ubc29\uc2dd\uc5d0\uc11c \uc8fc\ud30c\uc218 \uce21\uc815 \ubc29\uc2dd\uc73c\ub85c \ubcc0\ud658)<\/li>\n\n\n\n<li>\ub178\uc774\uc988\uc758 \uc601\ud5a5\uc774 \uc801\uace0, \uc218\uc2e0 \uc2e0\ud638\uc5d0 FFT(\uace0\uc18d \ud478\ub9ac\uc5d0 \ubcc0\ud658)\ub97c \uc801\uc6a9\ud558\uc5ec \uc2e4\uc2dc\uac04\uc73c\ub85c \uc815\ubc00\ud55c \uc561\uc704 \uce21\uc815\uc774 \uac00\ub2a5\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc1a1\uc2e0 \uc8fc\ud30c\uc218(ft)\ub294 \uace0\uc815\ub41c \uae30\uc900 \uc2e0\ud638\uc774\ubbc0\ub85c \uba85\ud655\ud788 \uc81c\uc5b4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ubc18\uc0ac\ud30c(fr)\uc5d0\ub294 \uc1a1\uc2e0 \uc8fc\ud30c\uc218\uc758 \ubc18\uc0ac \uc131\ubd84\uacfc \ub178\uc774\uc988\uac00 \uc11e\uc5ec \uc788\uc73c\ub098, \uac00\uc7a5 \uc9c0\ubc30\uc801\uc778 \uc8fc\ud30c\uc218 \uc131\ubd84\uc774 \ube44\ud2b8 \uc8fc\ud30c\uc218(fb)\uc640 \ub9e4\uce6d\ub418\ubbc0\ub85c \ud544\ud130\ub9c1\uc774 \uc6a9\uc774\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">3. \uc720\uc804\uc728\uc774 \ub0ae\uc740 \ub9e4\uc9c8 \uce21\uc815 \uc2dc \uc2e0\ub8b0\uc131 \ud5a5\uc0c1 \ubc29\uc548<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1) \uc2e0\ud638 \uc57d\ud654 \uc6d0\uc778<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub9e4\uc9c8\uc758 \ube44\uc720\uc804\uc728(\\epsilon_r, \uc6d0\ubb38 \uc190\uae00\uc528 &#8216;Er&#8217;)\uc774 \ub0ae\uc744\uc218\ub85d \uc804\ud30c\uac00 \ud45c\uba74\uc5d0\uc11c \ubc18\uc0ac\ub418\uc9c0 \ubabb\ud558\uace0 \ud22c\uacfc\ud558\ubbc0\ub85c, \ub808\uc774\ub354 \ubc18\uc0ac \uba74\uc801(\u03c3)\uc774 \uc791\uc544\uc838 \ucd5c\uc885 \uc218\uc2e0 \ud30c\uc6cc(Pr)\uac00 \uae09\uaca9\ud788 \uc800\ud558\ub429\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2) \ub808\uc774\ub354 \ud30c\ub77c\ubbf8\ud130 \ubcf4\uc0c1\uc744 \ud1b5\ud55c \uc2e0\ub8b0\uc131 \ud655\ubcf4 \ubc29\uc548<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pt (\uc1a1\uc2e0 \ucd9c\ub825) \ud5a5\uc0c1: \uc1a1\uc2e0 \ud30c\uc6cc \uc790\uccb4\ub97c \ub192\uc5ec \ubc18\uc0ac\ud30c\uc758 \uc808\ub300\uc801\uc778 \uc138\uae30\ub97c \ud0a4\uc6c1\ub2c8\ub2e4.<\/li>\n\n\n\n<li>G (\uc548\ud14c\ub098 \uac8c\uc778) \ud5a5\uc0c1: \uc548\ud14c\ub098\uc758 \uc774\ub4dd\uc744 \ub192\uc5ec(\uc9c0\ud5a5\uc131\uc774 \uac15\ud55c \uc548\ud14c\ub098 \uc0ac\uc6a9 \ub4f1) \uc1a1\uc218\uc2e0 \ud6a8\uc728\uc744 \uadf9\ub300\ud654\ud569\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\u03bb (\ud30c\uc7a5) \uc870\uc815: \ud30c\uc7a5\uc744 \uae38\uac8c \ud558\uac70\ub098(\uc8fc\ud30c\uc218\ub97c \ub0ae\ucda4), \uc815\ubc00\ub3c4 \ud5a5\uc0c1\uc744 \uc704\ud574 \ud544\uc694\uc2dc \ucd5c\uc801\uc758 \uc8fc\ud30c\uc218 \ub300\uc5ed\uc744 \uc7ac\uc120\uc815\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">3) \uce21\uc815 \uc54c\uace0\ub9ac\uc998 \ubcf4\uc0c1<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>UNZ (Upper Null Zone) \ubc0f Dead Band \uc124\uc815: \uc548\ud14c\ub098 \uadfc\uc811 \uc601\uc5ed\uc758 \ubd88\uac10\ub300(Dead Band)\ub098 \ud2b9\uc815 \uc2dc\uac04 \ub300\uc5ed\uc758 \ub178\uc774\uc988 \uc2e0\ud638\ub97c \ubc30\uc81c\ud558\ub3c4\ub85d \uc54c\uace0\ub9ac\uc998\uc744 \uc124\uc815\ud558\uc5ec \uc624\ub3d9\uc791\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4. \uacb0\ub860<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub808\uc774\ub354\ub294 \ubcf8\ub798 \uac70\ub9ac\uc640 \ubc29\ud5a5\uc744 \ubaa8\ub450 \ud0d0\uc9c0\ud558\ub294 \uae30\uc220\uc774\uc9c0\ub9cc, \uacf5\uc815 \uc81c\uc5b4\uc6a9 \uc561\uc704 \uce21\uc815(Level Measurement)\uc5d0\uc11c\ub294 &#8216;\uac70\ub9ac(R)&#8217;\uc758 \uc815\ubc00\ud55c \uce21\uc815\uc774 \ud575\uc2ec\uc785\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\uc2e0\ud638 \uc138\uae30\ub294 \uac70\ub9ac\uc5d0 \ubc18\ube44\ub840(R^4)\ud558\ubbc0\ub85c \uac70\ub9ac\uac00 \uba40\uc5b4\uc9c8\uc218\ub85d \uac10\uc1e0\uac00 \uc2ec\ud574\uc9c0\uc9c0\ub9cc, \uace0\uc815\ub41c \ud0f1\ud06c \ub0b4\ubd80\uc5d0\uc11c\ub294 \uce21\uc815 \ubc94\uc704\uac00 \uaddc\uaca9\ud654\ub418\uc5b4 \uc788\uc5b4 \uac10\uc1e0 \uc601\ud5a5\uc758 \ud55c\uacc4\ub97c \uc608\uce21\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/li>\n\n\n\n<li>\ub530\ub77c\uc11c \ubcf5\uc7a1\ud55c \ubc29\ud5a5 \ud0d0\uc9c0 \uae30\ub2a5\uc744 \ubc30\uc81c\ud558\uace0, \ud2b9\uc815 \uc124\uce58 \uc704\uce58\uc5d0\uc11c \uc218\uc9c1 \ubc29\ud5a5\uc758 \uac70\ub9ac \uce21\uc815 \uc131\ub2a5\uc5d0\ub9cc \uc9d1\uc911(\ubc29\ud5a5 \ud3ec\uae30 \ubc0f \uac70\ub9ac \uce21\uc815 \uc911\uc810)\ud568\uc73c\ub85c\uc368 \uacc4\uce21 \uc2e0\ub8b0\uc131\uc744 \uadf9\ub300\ud654\ud558\ub294 \uac83\uc774 \ubc14\ub78c\uc9c1\ud569\ub2c8\ub2e4.<br>\ub05d.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\ucc44\uc810 \uc644\ub8cc: 16.78\/25.0<br>\uc608\uc0c1 \uc810\uc218\ub300: 16.3~17.3<br>\uc2e0\ub8b0\ub3c4: high<br>\uacf5\uc2dd \ud569\uaca9\uc120: 15.0\uc810 (\ub2ec\uc131)<br>\uc2e4\uc804 \ubaa9\ud45c\uc120: 17.5\uc810 (\ubbf8\ub2ec)<br>\uace0\ub4dd\uc810 \uae30\uc900: 20.0\uc810 (\ubbf8\ub2ec)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ud310\uc815: \ud575\uc2ec \uc774\ub860 \uc124\uba85\uc740 \uc6b0\uc218\ud558\ub098, \ud604\uc7a5 \uc801\uc6a9 \ubc0f \uae30\uc220\uc0ac\uc801 \ud310\ub2e8\uc131 \ubcf4\uac15 \ud544\uc694<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\ucd1d\ud3c9: \ub808\uc774\ub354 \uc561\uc704\uacc4\uc758 \ub450 \uac00\uc9c0 \uc6d0\ub9ac\ub97c \uc9c0\ubc30 \uacf5\uc2dd\uacfc \ud568\uaed8 \uba85\ud655\ud788 \ube44\uad50\ud558\uace0 \uc2e0\ub8b0\uc131 \ud655\ubcf4 \ubc29\uc548\uc744 \ub17c\ub9ac\uc801\uc73c\ub85c \uae30\uc220\ud588\uc2b5\ub2c8\ub2e4. \ub2e4\ub9cc, \uae30\uc220\uc0ac \ub2f5\uc548\uc73c\ub85c\uc11c \ud604\uc7a5 \uc81c\uc57d \uc870\uac74\uc774\ub098 \uad6c\uccb4\uc801\uc778 \uc124\uacc4 \uc81c\uc5b8\uc774 \ubd80\uc871\ud558\uc5ec \uc544\uc26c\uc6c0\uc774 \ub0a8\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[\ud575\uc2ec \ud310\uc815 \uadfc\uac70]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ud384\uc2a4 \ubc0f FMCW \uc6d0\ub9ac \ube44\uad50\uc640 \uc9c0\ubc30 \uacf5\uc2dd \uc81c\uc2dc\uac00 \uba85\ud655\ud568.<\/li>\n\n\n\n<li>\uc720\uc804\uc728\uc774 \ub0ae\uc740 \ub9e4\uc9c8\uc5d0\uc11c\uc758 \uc2e0\ub8b0\uc131 \ud655\ubcf4 \ubc29\uc548\uc744 \uc54c\uace0\ub9ac\uc998\/\ud30c\ub77c\ubbf8\ud130 \uce21\uba74\uc5d0\uc11c \ub17c\ub9ac\uc801\uc73c\ub85c \uc81c\uc2dc\ud568.<\/li>\n\n\n\n<li>\ub2f5\uc548 \uad6c\uc870(\ubc30\uacbd\u2192\uc6d0\ub9ac\u2192\ubcf4\uc644\ucc45)\ub294 \ub17c\ub9ac\uc801 \ud750\ub984\uc774 \uc790\uc5f0\uc2a4\ub7ec\uc6c0.<\/li>\n\n\n\n<li>\ub3c5\ucc3d\uc131\/\uae30\uc220\uc0ac\uc801 \ud310\ub2e8\uc131(0.92\/2.0) \uce21\uba74\uc5d0\uc11c \uad6c\uccb4\uc801\uc778 \ud604\uc7a5 \ud310\ub2e8\uc774 \ubd80\uc871\ud568.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\ud56d\ubaa9\ubcc4 \ud575\uc2ec \uadfc\uac70]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>A. \ubb38\uc81c \uc9c4\uc785\u00b7\ub2f5\uc548 \uad6c\uc870: \ubc30\uacbd \ubc0f \uc9c0\ubc30 \ubc29\uc815\uc2dd \uc81c\uc2dc\ub85c \ubb38\uc81c \uc7c1\uc810 \ub3c4\uc785\uc774 \uc6b0\uc218\ud568.<\/li>\n\n\n\n<li>B. \ubb38\uc81c \uc694\uad6c \ud574\uc11d\u00b7\uc644\uc804\uc131: \uc694\uad6c\ub41c \ub450 \ubc29\uc2dd\uc758 \ube44\uad50 \ubc0f \uc2e0\ub8b0\uc131 \ud655\ubcf4 \ubc29\uc548\uc744 \ubaa8\ub450 \ucda9\uc2e4\ud788 \uc774\ud589\ud568.<\/li>\n\n\n\n<li>C. \uc720\ud615\ubcc4 Fact \uae30\ubc18 \ub0b4\uc6a9 \uc124\uba85: \uc9c0\ubc30 \uacf5\uc2dd\uacfc \uc6d0\ub9ac \uc124\uba85\uc740 \uc815\ud655\ud588\uc73c\ub098, \uc2e4\ubb34\uc801 \ud55c\uacc4\uc5d0 \ub300\ud55c \uae4a\uc774 \uc788\ub294 \ud1b5\ucc30\uc774 \ud544\uc694\ud568.<\/li>\n\n\n\n<li>D. \ud604\uc7a5 \uc801\uc6a9\u00b7\uc124\uacc4 \ud310\ub2e8\u00b7\uc81c\uc5b8: \ud604\uc2e4\uc801 \ub300\ucc45\uc744 \uc81c\uc2dc\ud588\uc73c\ub098, \ud0f1\ud06c \ud615\uc0c1 \ub4f1 \ud604\uc7a5 \uc81c\uc57d \uc870\uac74 \uc5b8\uae09\uc774 \ubd80\uc871\ud568.<\/li>\n\n\n\n<li>E. \uc5f0\uacb0\uc131\u00b7\uba74\uc811 \ubc29\uc5b4 \uac00\ub2a5\uc131: \ubc30\uacbd\ubd80\ud130 \uc81c\uc5b8\uae4c\uc9c0 \ub17c\ub9ac\uc801 \ud750\ub984\uc774 \uc790\uc5f0\uc2a4\ub7ec\uc6cc \uba74\uc811 \ubc29\uc5b4\uc5d0 \uc6a9\uc774\ud568.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\ubcf4\uc644 \ubc29\ud5a5]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ub2f5\uc548 \uc804\uac1c \uc21c\uc11c\ub97c &#8216;\ubc30\uacbd \u2192 \ubb38\uc81c \uc694\uad6c \u2192 \uc720\ud615\ubcc4 \uc124\uba85 \u2192 \ud604\uc7a5 \uc801\uc6a9\/\uc124\uacc4 \ud310\ub2e8\/\uc81c\uc5b8&#8217; \uc21c\uc11c\ub85c \ud655\uc7a5\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\ud604\uc7a5 \uc801\uc6a9 \uc81c\uc5b8 \uc2dc \ube44\uc6a9, \uc2dc\uac04, \uae30\uc874 \uc124\ube44 \uc601\ud5a5, \uc6b4\uc804 \ub9ac\uc2a4\ud06c \ub4f1 \ub2e4\uac01\uc801\uc778 \uad00\uc810\uc744 \uc5f0\uacb0\ud558\uc5ec \uc11c\uc220\ud558\uc138\uc694.<\/li>\n\n\n\n<li>\uc720\uc804\uc728\uc774 \ub0ae\uc740 \ub9e4\uc9c8 \uce21\uc815 \uc2dc \uac00\uc774\ub4dc \ud30c\uc774\ud504 \uc0ac\uc6a9 \ub4f1 \uae30\uad6c\uc801 \ubcf4\uc644 \ubc29\uc548\uc744 \ucd94\uac00\ud558\uc5ec \ud604\uc7a5\uac10\uc744 \ub192\uc774\uc138\uc694.<\/li>\n\n\n\n<li>\ubaa8\ub4e0 \ubb38\uc81c \uc720\ud615\uc5d0\uc11c \ud604\uc7a5 \uc801\uc6a9\uc131, \ubb38\uc81c \ud574\uacb0, \uae30\uc220\uc0ac\uc801 \ud310\ub2e8\uc131\uc744 \ubc18\ub4dc\uc2dc \uc5f0\uacb0\ud558\uc5ec \ub2f5\uc548\uc744 \uc644\uc131\ud558\uc138\uc694.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">[\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\ub3c4]<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\ubb38\uc81c \uc720\ud615 lens: \ube44\uad50\u00b7\uc120\uc815\ud615(COMPARE_SELECTION)<\/li>\n\n\n\n<li>\uc804\uccb4 \ud310\uc815: strong<\/li>\n\n\n\n<li>\uc694\uad6c\uc0ac\ud56d \ucda9\uc871\ub960: 92.9% (\uac00\uc911 6.5\/7)<\/li>\n\n\n\n<li>\uc0c1\ud0dc: \ucda9\uc871 6 \u00b7 \ubd80\ubd84 1 \u00b7 \uc624\ub2f5 0 \u00b7 \ub204\ub77d 0<\/li>\n\n\n\n<li>\ubd80\ubd84 \ucda9\uc871: selection_judgement<\/li>\n\n\n\n<li>\ubd80\uc871\ud55c \uc138\ubd80 \ubc94\uc8fc: selection_judgement<\/li>\n\n\n\n<li>D\ud56d\ubaa9 \ubcf4\uc644 \ud544\uc694: \ube44\uc6a9\u00b7\uc720\uc9c0\ubcf4\uc218\uc131 trade-off<\/li>\n\n\n\n<li>coverage \ubcf4\uc815 \ud6c4\ubcf4: -0.11\uc810, mode=warn<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Guided Wave Radar Level Measurement - [Echo Curve Reading]\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/DDE3fkSNFw0?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\uc81c\ubbf8\ub098\uc774 \ubaa8\ubc94 \ub2f5\uc548<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">[\ubaa8\ubc94 \ub2f5\uc548] \ub808\uc774\ub354 \uc561\uc704\uacc4\uc758 FMCW\uc640 \ud384\uc2a4 \ubc29\uc2dd \uc6d0\ub9ac \ube44\uad50 \ubc0f \uc800\uc720\uc804\uc728 \ub9e4\uc9c8 \uacc4\uce21 \uc2e0\ub8b0\uc131 \ud655\ubcf4 \ubc29\uc548<\/h2>\n\n\n\n<h2 class=\"wp-block-heading\">1. \uac1c\uc694 \ubc0f \ub808\uc774\ub354 \uacc4\uce21\uc758 \ubb3c\ub9ac\uc801 \ud55c\uacc4<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ub808\uc774\ub354 \uc561\uc704\uacc4\ub294 \ub9c8\uc774\ud06c\ub85c\ud30c\ub97c \ub9e4\uc9c8\uc5d0 \ubc29\uc0ac\ud558\uc5ec \uc784\ud53c\ub358\uc2a4 \ubd88\uc5f0\uc18d\uba74\uc5d0 \uc758\ud55c \ubc18\uc0ac\ud30c\ub97c \uc218\uc2e0\ud574 \uac70\ub9ac\ub97c \uc0b0\ucd9c\ud558\ub294 \uae30\uae30\uc774\ub2e4. \uc774\ub54c \ub808\uc774\ub354\uc758 \uc218\uc2e0 \uc131\ub2a5\uc740 \ub2e4\uc74c\uc758 \uc9c0\ubc30 \ubc29\uc815\uc2dd(Radar Equation)\uc744 \ub530\ub978\ub2e4.<br>Pt * G^2 * \u03bb^2 * \u03c3<br>Pr = &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<br>(4\u03c0)^3 * R^4<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pr: \uc218\uc2e0 \uc804\ub825, Pt: \uc1a1\uc2e0 \uc804\ub825, G: \uc548\ud14c\ub098 \uc774\ub4dd<\/li>\n\n\n\n<li>\u03bb(lambda): \ud30c\uc7a5, \u03c3(sigma): \ubc18\uc0ac \ub2e8\uba74\uc801(RCS), R: \uce21\uc815 \uac70\ub9ac<br>\uc774 \uc218\uc2dd\uc5d0\uc11c \ubcf4\ub4ef \uc218\uc2e0 \uc804\ub825\uc740 \uac70\ub9ac\uc758 4\uc81c\uacf1(R^4)\uc5d0 \ubc18\ube44\ub840\ud558\uc5ec \uae09\uaca9\ud788 \uac10\uc1e0\ud558\ubbc0\ub85c, \uc790\uc720 \uacf5\uac04 \ubc29\uc0ac \ubc29\uc2dd\uc5d0\uc11c\ub294 \uc218\uc2e0 \uc2e0\ud638 \ucc98\ub9ac(DSP) \ubc0f \ubc29\uc2dd \uc120\uc815\uc774 \uacc4\uce21 \uc2e0\ub8b0\uc131\uc758 \ud575\uc2ec\uc774 \ub41c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">2. \ud384\uc2a4(Pulse) \ubc29\uc2dd\uacfc FMCW \ubc29\uc2dd\uc758 \uce21\uc815 \uc6d0\ub9ac \ube44\uad50<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">2.1 \ud384\uc2a4 (Pulse \/ ToF) \ubc29\uc2dd<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc9c0\ubc30 \uacf5\uc2dd:<br>c * t<br>R = &#8212;&#8212;&#8212;<br>2<br>(c: \uad11\uc18d, t: \ube44\ud589 \uc2dc\uac04)<\/li>\n\n\n\n<li>\uce21\uc815 \uc6d0\ub9ac: \ub098\ub178\ucd08 \ub2e8\uc704\uc758 \uc9e7\uc740 \ub9c8\uc774\ud06c\ub85c\ud30c \ud384\uc2a4\ub97c \ubc29\uc0ac\ud558\uace0, \uc720\uccb4 \ud45c\uba74\uc5d0\uc11c \ubc18\uc0ac\ub418\uc5b4 \ub3cc\uc544\uc624\ub294 \uc808\ub300 \uc2dc\uac04(ToF)\uc744 \uce21\uc815\ud558\uc5ec \uac70\ub9ac\ub85c \ud658\uc0b0\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ud2b9\uc9d5 \ubc0f \ud55c\uacc4: \uc54c\uace0\ub9ac\uc998\uc774 \uc9c1\uad00\uc801\uc774\uace0 \uc804\ub825 \uc18c\ubaa8\uac00 \uc801\uc5b4 \ub8e8\ud504 \ud30c\uc6cc(2-wire) \uad6c\ub3d9\uc5d0 \uc720\ub9ac\ud558\ub098, \ub2e8\uac70\ub9ac \uc815\ubc00\ub3c4 \ud655\ubcf4\ub97c \uc704\ud574 \uadf9\ub3c4\ub85c \ube60\ub978 \uace0\uc18d \uc2a4\uc704\uce6d \ud68c\ub85c\uac00 \uc694\uad6c\ub418\uba70, \uc2dc\uac04 \uc601\uc5ed\uc758 \ub178\uc774\uc988(Clutter) \uac04\uc12d\uc5d0 \ucde8\uc57d\ud558\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2.2 FMCW (Frequency Modulated Continuous Wave) \ubc29\uc2dd<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc9c0\ubc30 \uacf5\uc2dd:<br>fb * c * T<br>R = &#8212;&#8212;&#8212;&#8212;&#8211;<br>2 * B<br>(fb: \ube44\ud2b8 \uc8fc\ud30c\uc218, T: \uc2a4\uc715 \uc8fc\uae30, B: \ub300\uc5ed\ud3ed)<\/li>\n\n\n\n<li>\uce21\uc815 \uc6d0\ub9ac: \uc8fc\ud30c\uc218\uac00 \uc120\ud615\uc801\uc73c\ub85c \ubcc0\ud558\ub294 \ucc98\ud504(Chirp) \uc2e0\ud638\ub97c \uc5f0\uc18d \ubc29\uc0ac\ud558\uace0, \ubc18\uc0ac\ub418\uc5b4 \ub3cc\uc544\uc628 \uc218\uc2e0 \uc2e0\ud638\uc640 \uc1a1\uc2e0 \uc2e0\ud638 \uac04\uc758 \uc8fc\ud30c\uc218 \ucc28\uc774(fb)\ub97c \uad6c\ud558\uc5ec \uac70\ub9ac\ub97c \uc0b0\ucd9c\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ud2b9\uc9d5 \ubc0f \uc7a5\uc810: \uace0\uc18d \ud478\ub9ac\uc5d0 \ubcc0\ud658(FFT)\uc744 \ud1b5\ud574 \ub178\uc774\uc988\uac00 \uc11e\uc778 \uc2dc\uac04 \uc601\uc5ed\uc758 \uc2e0\ud638\ub97c \uc8fc\ud30c\uc218 \uc601\uc5ed\uc73c\ub85c \ubd84\ub9ac\ud558\ubbc0\ub85c \uc2e0\ud638 \ub300 \uc7a1\uc74c\ube44(S\/N)\uac00 \uadf9\ub3c4\ub85c \uc6b0\uc218\ud558\ub2e4. \ub2e4\uc911 \uc5d0\ucf54 \ud658\uacbd\uc5d0\uc11c\ub3c4 \uc720\ud6a8 Peak \uac80\ucd9c\uc774 \uc6a9\uc774\ud574 \uace0\uc815\ubc00 \uacc4\uce21\uc5d0 \uc801\ud569\ud558\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">3. \uc800\uc720\uc804\uc728 \ub9e4\uc9c8 \uce21\uc815 \uc2dc \uc2e0\ub8b0\uc131 \uc800\ud558 \uc6d0\uc778 (\ubb3c\ub9ac\uc801 \uace0\ucc30)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\uc800\uc720\uc804\uc728 \ub9e4\uc9c8(\uc608: \ud0c4\ud654\uc218\uc18c\uacc4 \uc624\uc77c, \u03b5_r \u2248 2) \uce21\uc815 \uc2dc \uc2e0\ud638\uac00 \uc57d\ud654\ub418\ub294 \uadfc\ubcf8 \uc6d0\uc778\uc740 \ub450 \ub9e4\uc9c8 \uac04\uc758 \ubc18\uc0ac \uacc4\uc218(\u0393, Gamma) \uc800\ud558\uc5d0 \uc788\ub2e4.<br>\u221a\u03b5_r1 &#8211; \u221a\u03b5_r2<br>\u0393 = &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;-<br>\u221a\u03b5_r1 + \u221a\u03b5_r2<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uacf5\uae30(\u03b5_r1 \u2248 1)\uc640 \uc720\uccb4(\u03b5_r2) \uac04\uc758 \uc720\uc804\uc728 \ucc28\uc774\uac00 \uc791\uc744\uc218\ub85d \ubc18\uc0ac \uacc4\uc218 \u0393\uac00 0\uc5d0 \uc218\ub834\ud55c\ub2e4.<\/li>\n\n\n\n<li>\uc774\ub294 \uc785\uc0ac\ub41c \uc804\uc790\uae30\ud30c\uac00 \ud45c\uba74\uc5d0\uc11c \ubc18\uc0ac\ub418\uc9c0 \uc54a\uace0 \ub9e4\uc9c8 \ub0b4\ubd80\ub85c \ud22c\uacfc\ub428\uc744 \uc758\ubbf8\ud558\uba70, \ub808\uc774\ub354 \ubc29\uc815\uc2dd\uc758 \ubc18\uc0ac \ub2e8\uba74\uc801(\u03c3)\uc744 \uae09\uac10\uc2dc\ucf1c \ucd5c\uc885 \uc218\uc2e0 \uc804\ub825(Pr)\uc774 \uae30\uae30 \uac80\ucd9c \ud55c\uacc4 \uc774\ud558\ub85c \ub5a8\uc5b4\uc9c0\uac8c \ub9cc\ub4e0\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">4. \uc800\uc720\uc804\uc728 \ub9e4\uc9c8 \uacc4\uce21 \uc2e0\ub8b0\uc131 \ud5a5\uc0c1 \ubc0f \ubcf4\uc644 \ubc29\uc548<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">4.1 \ud30c\ub77c\ubbf8\ud130 \ubc0f \uc54c\uace0\ub9ac\uc998 \ucd5c\uc801\ud654 (S\/W\uc801 \uc811\uadfc)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc8fc\ud30c\uc218 \ub300\uc5ed \ubc0f \uc774\ub4dd \uaca9\uc0c1: 80GHz \uc774\uc0c1\uc758 \uace0\uc8fc\ud30c\uc218 \ub300\uc5ed\uc744 \uc120\uc815\ud558\uc5ec \ud30c\uc7a5(\u03bb)\uc744 \uc904\uc774\uace0 \ube54 \uac01\ub3c4\ub97c \ud611\uc18c\ud558\uac8c \uc9d1\uc911\uc2dc\ucf1c \uc548\ud14c\ub098 \uc774\ub4dd(G)\uc744 \uadf9\ub300\ud654\ud55c\ub2e4.<\/li>\n\n\n\n<li>Adaptive Threshold &amp; UNZ \uc124\uc815: \uc6d0\uac70\ub9ac\uc758 \ubbf8\uc57d\ud55c \uc2e0\ud638\ub97c \ud3ec\ucc29\ud558\uae30 \uc704\ud574 \ub3d9\uc801 \uc784\uacc4\uce58(Adaptive Thresholding)\ub97c \uc801\uc6a9\ud558\uace0, \uc0c1\ubd80 \ub178\uc990\ubd80\uc758 \ub09c\ubc18\uc0ac\uc5d0 \uc758\ud55c \uac00\uc9dc \uc5d0\ucf54(False Level) \uc624\uc791\ub3d9\uc744 \ub9c9\uae30 \uc704\ud574 Upper Null Zone(\ubd88\uac10\ub300)\uc744 \uba85\ud655\ud788 \uc124\uc815\ud55c\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4.2 \uae30\uad6c\uc801 \ubcf4\uc644 \uc124\ube44 \uc801\uc6a9 (H\/W\uc801 \uc811\uadfc)<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc2a4\ud2f8\ub9c1 \uc6f0 (Stilling Well) \ub3c4\uc785: \ud0f1\ud06c \ub0b4\ubd80\uc5d0 \uae08\uc18d \uac00\uc774\ub4dc \ud30c\uc774\ud504\ub97c \uc124\uce58\ud558\uace0 \uadf8 \uc548\uc73c\ub85c \uc804\ud30c\ub97c \ubc29\uc0ac\ud55c\ub2e4. \uc774\ub294 \ud45c\uba74 \ud30c\ub3d9\uc744 \uc9c4\uc815\uc2dc\ud0ac \ubfd0\ub9cc \uc544\ub2c8\ub77c, \ube54 \ud655\uc0b0\uc744 \uc5b5\uc81c\ud558\uc5ec \ubbf8\uc57d\ud55c \ubc18\uc0ac\ud30c\uc758 \uc18c\uc2e4\uc744 \ub9c9\uc544\uc900\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">4.3 \uce21\uc815 \ubc29\uc2dd\uc758 \uc804\ud658: GWR (\uc720\ub3c4\ud30c \ub808\uc774\ub354) \uc801\uc6a9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\uc790\uc720 \uacf5\uac04 \ubc29\uc0ac\uc5d0 \ub530\ub978 R^4 \uac10\uc1e0\uc758 \uadfc\ubcf8\uc801 \ud574\uacb0\uc744 \uc704\ud574 \ub3c4\ud30c\uad00 \ud6a8\uacfc(Waveguide Effect)\ub97c \ud65c\uc6a9\ud558\ub294 GWR\uc744 \uc801\uc6a9\ud55c\ub2e4.<\/li>\n\n\n\n<li>\ud504\ub85c\ube0c\ub97c \uc0bd\uc785\ud558\uc5ec \uc804\ud30c\ub97c TEM \ubaa8\ub4dc\ub85c \uad6c\uc18d\ud568\uc73c\ub85c\uc368 \uc5d0\ub108\uc9c0\ub97c \ud45c\uba74\uae4c\uc9c0 \uc190\uc2e4 \uc5c6\uc774 \uc804\ub2ec\ud558\uba70, \uac70\ud488\uc774\ub098 \ub09c\uae30\ub958\uc758 \uac04\uc12d\uc744 \ubc30\uc81c\ud558\uc5ec \uc800\uc720\uc804\uc728 \uacc4\uba74 \uacc4\uce21\uc758 \uc2e0\ub8b0\uc131\uc744 \ud68d\uae30\uc801\uc73c\ub85c \ub192\uc77c \uc218 \uc788\ub2e4.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">5. \uacb0\ub860 \ubc0f \uae30\uc220\uc0ac\uc801 \uc81c\uc5b8<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\ub808\uc774\ub354 \uc561\uc704\uacc4\ub294 \ube44\uc811\ucd09\uc2dd \uacc4\uce21\uc758 \ud45c\uc900\uc73c\ub85c \uc790\ub9ac \uc7a1\uc558\uc73c\ub098, \uc800\uc720\uc804\uc728 \ub9e4\uc9c8 \ud658\uacbd\uc5d0\uc11c\ub294 \uc790\uc720 \uacf5\uac04 \uc804\ud30c \ubaa8\ub378\uc774 \uac16\ub294 \ubb3c\ub9ac\uc801 \uac10\uc1e0(R^4)\uc640 \ub0ae\uc740 \ubc18\uc0ac\uc728\uc758 \ud55c\uacc4\uc5d0 \uc9c1\uba74\ud55c\ub2e4.<br>\ub530\ub77c\uc11c \ud604\uc7a5 \uc5d4\uc9c0\ub2c8\uc5b4\ub294 \ub9f9\ubaa9\uc801\uc73c\ub85c \uace0\uac00\uc758 \uace0\uc8fc\ud30c FMCW \ubaa8\ub378\uc744 \ucc44\ud0dd\ud558\uae30\ubcf4\ub2e4\ub294, \ud0f1\ud06c \ub0b4 \uad50\ubc18\uae30 \uc124\uce58 \uc5ec\ubd80 \ub4f1 \ubb3c\ub9ac\uc801 \uc81c\uc57d\uc744 \uc6b0\uc120 \uac80\ud1a0\ud574\uc57c \ud55c\ub2e4. \uad6c\uc870\uc801 \uac04\uc12d\uc774 \uc801\ub2e4\uba74 \uc2a4\ud2f8\ub9c1 \uc6f0\uc744 \ubcd1\ud589\ud558\uac70\ub098 \uc811\ucd09\uc2dd GWR\uc744 \ub3c4\uc785\ud558\ub294 \uac83\uc774 \uc124\ube44 \ud22c\uc790 \ube44\uc6a9(CAPEX) \uc808\uac10\uacfc \uacc4\uce21 \uc2e0\ub8b0\uc131\uc744 \ub3d9\uc2dc\uc5d0 \ud655\ubcf4\ud558\ub294 \uac00\uc7a5 \ud569\ub9ac\uc801\uc778 \uc5d4\uc9c0\ub2c8\uc5b4\ub9c1 \ud310\ub2e8\uc774\ub2e4.<br>\ub05d.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ubb38\uc81c: \ub808\uc774\ub354(Radar)\uc2dd \uc561\uc704\uacc4\uc758 FMCW(Frequency Modulated Continuous Wave) \ubc29\uc2dd\uacfc\ud384\uc2a4 \ubc29\uc2dd\uc758 \uce21\uc815 \uc6d0\ub9ac\ub97c \ube44\uad50\ud558\uace0, \uc720\uc804\uc728\uc774 \ub0ae\uc740 \ub9e4\uc9c8 \uce21\uc815 \uc2dc\uc758 \uc2e0\ub8b0\uc131 \ud655\ubcf4 \ubc29\uc548\uc744\uc124\uba85\ud558\uc2dc\uc624 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","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":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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