{"id":209468,"date":"2024-03-21T14:08:15","date_gmt":"2024-03-21T14:08:15","guid":{"rendered":"https:\/\/www.electricity-magnetism.org\/%e3%82%a2%e3%83%b3%e3%83%86%e3%83%8a%e6%94%be%e5%b0%84%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3-%e6%a6%82%e8%a6%81%e3%81%a8%e9%87%8d%e8%a6%81%e6%80%a7\/"},"modified":"2024-05-17T15:13:23","modified_gmt":"2024-05-17T15:13:23","slug":"%e3%82%a2%e3%83%b3%e3%83%86%e3%83%8a%e6%94%be%e5%b0%84%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3-%e6%a6%82%e8%a6%81%e3%81%a8%e9%87%8d%e8%a6%81%e6%80%a7","status":"publish","type":"post","link":"https:\/\/www.electricity-magnetism.org\/ja\/%e3%82%a2%e3%83%b3%e3%83%86%e3%83%8a%e6%94%be%e5%b0%84%e3%83%91%e3%82%bf%e3%83%bc%e3%83%b3-%e6%a6%82%e8%a6%81%e3%81%a8%e9%87%8d%e8%a6%81%e6%80%a7\/","title":{"rendered":"\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3 | \u6982\u8981\u3068\u91cd\u8981\u6027"},"content":{"rendered":"<p 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\u6982\u8981\u3068\u91cd\u8981\u6027<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u7121\u7dda\u901a\u4fe1\u3084\u30c6\u30ec\u30d3\u653e\u9001\u306a\u3069\u591a\u304f\u306e\u5206\u91ce\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u3057\u304b\u3057\u3001\u591a\u304f\u306e\u4eba\u306b\u3068\u3063\u3066\u306f\u305d\u306e\u6982\u5ff5\u304c\u96e3\u3057\u304f\u611f\u3058\u3089\u308c\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306e\u57fa\u672c\u7684\u306a\u6982\u8981\u3068\u305d\u306e\u91cd\u8981\u6027\u306b\u3064\u3044\u3066\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u3068\u306f\uff1f<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u3068\u306f\u3001\u30a2\u30f3\u30c6\u30ca\u304b\u3089\u653e\u5c04\u3055\u308c\u308b\u96fb\u78c1\u6ce2\u306e\u5f37\u5ea6\u5206\u5e03\u3092\u793a\u3059\u3082\u306e\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u30a2\u30f3\u30c6\u30ca\u304c\u3069\u306e\u65b9\u5411\u306b\u3069\u308c\u3060\u3051\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u653e\u5c04\u3057\u3066\u3044\u308b\u304b\u3092\u793a\u3059\u30b0\u30e9\u30d5\u3084\u56f3\u306e\u5f62\u3067\u8868\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u57fa\u672c\u6982\u5ff5<\/h2>\n<p>\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306f\u4e00\u822c\u7684\u306b2D\u307e\u305f\u306f3D\u306e\u30b0\u30e9\u30d5\u3067\u793a\u3055\u308c\u307e\u3059\u30022D\u306e\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u5782\u76f4\u9762\u3068\u6c34\u5e73\u9762\u306e2\u3064\u306e\u5e73\u9762\u3067\u6e2c\u5b9a\u3055\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002\u4e00\u65b9\u30013D\u306e\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u5168\u65b9\u4f4d\u306e\u5f37\u5ea6\u5206\u5e03\u3092\u7acb\u4f53\u7684\u306b\u8868\u73fe\u3057\u307e\u3059\u3002<\/p>\n<p>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306e\u4e3b\u306a\u8981\u7d20\u306b\u306f\u4ee5\u4e0b\u306e\u3082\u306e\u304c\u542b\u307e\u308c\u307e\u3059\uff1a<\/p>\n<ul>\n<li><strong>\u4e3b\u653e\u5c04\u65b9\u5411\uff08Main Lobe\uff09\uff1a<\/strong> \u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u6700\u3082\u5f37\u304f\u653e\u5c04\u3055\u308c\u308b\u65b9\u5411\u3002<\/li>\n<li><strong>\u30b5\u30a4\u30c9\u30ed\u30fc\u30d6\uff08Sidelobes\uff09\uff1a<\/strong> \u4e3b\u653e\u5c04\u65b9\u5411\u4ee5\u5916\u306e\u65b9\u5411\u306b\u653e\u5c04\u3055\u308c\u308b\u30a8\u30cd\u30eb\u30ae\u30fc\u3002<\/li>\n<li><strong>\u30d5\u30ed\u30f3\u30c8\u30fb\u30d0\u30c3\u30af\u6bd4\uff08Front-to-Back Ratio\uff09\uff1a<\/strong> \u30a2\u30f3\u30c6\u30ca\u306e\u524d\u65b9\u306b\u5411\u304b\u3046\u30a8\u30cd\u30eb\u30ae\u30fc\u3068\u5f8c\u65b9\u306b\u5411\u304b\u3046\u30a8\u30cd\u30eb\u30ae\u30fc\u306e\u6bd4\u7387\u3002<\/li>\n<\/ul>\n<h2>\u57fa\u672c\u7684\u306a\u8a08\u7b97\u65b9\u6cd5<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306f\u3001\u901a\u5e38\u6b21\u306e\u3088\u3046\u306a\u6570\u5f0f\u3067\u8a18\u8ff0\u3055\u308c\u307e\u3059\uff1a<\/p>\n<p>\\[<br \/>\nP(\\theta, \\phi) = \\left| E(\\theta, \\phi) \\right|^2<br \/>\n\\]<\/p>\n<p>\u3053\u3053\u3067\u3001 \\( P(\\theta, \\phi) \\) \u306f\u7279\u5b9a\u306e\u89d2\u5ea6 \\( \\theta \\) \u3068 \\( \\phi \\) \u306b\u304a\u3051\u308b\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u3001\u305d\u3057\u3066 \\( E(\\theta, \\phi) \\) \u306f\u305d\u306e\u89d2\u5ea6\u306b\u304a\u3051\u308b\u96fb\u754c\u30d9\u30af\u30c8\u30eb\u3067\u3059\u3002\u3053\u306e\u5f0f\u306b\u3088\u308a\u3001\u7279\u5b9a\u306e\u65b9\u5411\u306b\u5bfe\u3059\u308b\u653e\u5c04\u5f37\u5ea6\u3092\u6c42\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306e\u91cd\u8981\u6027<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306e\u7406\u89e3\u306f\u3001\u901a\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u8a2d\u8a08\u3068\u6700\u9069\u5316\u306b\u6b20\u304b\u305b\u307e\u305b\u3093\u3002\u4ee5\u4e0b\u306e\u7406\u7531\u3067\u91cd\u8981\u3067\u3059\uff1a<\/p>\n<ul>\n<li><strong>\u901a\u4fe1\u6027\u80fd\u306e\u5411\u4e0a\uff1a<\/strong> \u6b63\u78ba\u306a\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u3092\u5229\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30a2\u30f3\u30c6\u30ca\u306e\u8a2d\u7f6e\u3084\u8abf\u6574\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u304c\u5fc5\u8981\u306a\u65b9\u5411\u306b\u52b9\u7387\u3088\u304f\u653e\u5c04\u3055\u308c\u3001\u901a\u4fe1\u54c1\u8cea\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u5e72\u6e09\u306e\u4f4e\u6e1b\uff1a<\/strong> \u4e0d\u8981\u306a\u65b9\u5411\u3078\u306e\u30a8\u30cd\u30eb\u30ae\u30fc\u653e\u5c04\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u3067\u3001\u4ed6\u306e\u901a\u4fe1\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u5e72\u6e09\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/li>\n<li><strong>\u30a8\u30cd\u30eb\u30ae\u30fc\u52b9\u7387\uff1a<\/strong> \u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u3092\u6700\u9069\u5316\u3059\u308b\u3068\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u3092\u52b9\u7387\u7684\u306b\u5229\u7528\u3067\u304d\u308b\u305f\u3081\u3001\u7701\u30a8\u30cd\u30eb\u30ae\u30fc\u52b9\u679c\u3082\u671f\u5f85\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u5b9f\u969b\u306e\u5fdc\u7528\u4f8b<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306e\u7406\u89e3\u306f\u3001\u591a\u304f\u306e\u5b9f\u7528\u7684\u306a\u5fdc\u7528\u306b\u5f79\u7acb\u3061\u307e\u3059\u3002\u4f8b\u3048\u3070\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306e\u30a2\u30f3\u30c6\u30ca\u8a2d\u8a08\u3067\u306f\u3001\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u3092\u6700\u9069\u5316\u3059\u308b\u3053\u3068\u3067\u901a\u4fe1\u6027\u80fd\u304c\u5411\u4e0a\u3057\u3001\u30d0\u30c3\u30c6\u30ea\u30fc\u5bff\u547d\u304c\u5ef6\u3073\u307e\u3059\u3002\u307e\u305f\u3001\u30ec\u30fc\u30c0\u30fc\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u30bf\u30fc\u30b2\u30c3\u30c8\u306e\u6b63\u78ba\u306a\u4f4d\u7f6e\u3092\u628a\u63e1\u3059\u308b\u305f\u3081\u306b\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u7d50\u8ad6<\/h2>\n<p>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306e\u7406\u89e3\u306f\u3001\u73fe\u4ee3\u306e\u901a\u4fe1\u6280\u8853\u306b\u304a\u3044\u3066\u4e0d\u53ef\u6b20\u3067\u3059\u3002\u57fa\u672c\u7684\u306a\u6982\u5ff5\u3068\u91cd\u8981\u6027\u3092\u628a\u63e1\u3059\u308b\u3053\u3068\u3067\u3001\u901a\u4fe1\u30b7\u30b9\u30c6\u30e0\u306e\u6700\u9069\u5316\u3084\u65b0\u3057\u3044\u6280\u8853\u306e\u958b\u767a\u306b\u5f79\u7acb\u3066\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4eca\u5f8c\u3082\u3053\u306e\u5206\u91ce\u306e\u7814\u7a76\u3068\u5fdc\u7528\u304c\u9032\u3080\u3053\u3068\u3067\u3001\u3088\u308a\u9ad8\u5ea6\u306a\u6280\u8853\u304c\u5b9f\u73fe\u3055\u308c\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30a2\u30f3\u30c6\u30ca\u653e\u5c04\u30d1\u30bf\u30fc\u30f3\u306e\u6982\u8981\u3068\u91cd\u8981\u6027\u3092\u89e3\u8aac\u3002\u7121\u7dda\u901a\u4fe1\u3084\u30c6\u30ec\u30d3\u653e\u9001\u3067\u306e\u57fa\u672c\u6982\u5ff5\u3001\u8a08\u7b97\u65b9\u6cd5\u3001\u5b9f\u969b\u306e\u5fdc\u7528\u4f8b\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_generate-full-width-content":"","footnotes":""},"categories":[96],"tags":[97],"class_list":["post-209468","post","type-post","status-publish","format-standard","hentry","category-96","tag-97","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-50"],"yoast_head":"<!-- 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