{"id":6636,"date":"2022-03-16T15:26:17","date_gmt":"2022-03-16T06:26:17","guid":{"rendered":"https:\/\/www11.ieice.org\/cs\/ap\/wp\/?page_id=6636"},"modified":"2025-12-05T18:40:03","modified_gmt":"2025-12-05T09:40:03","slug":"okumura-hata","status":"publish","type":"page","link":"https:\/\/www.ieice.org\/cs\/ap\/misc\/denpan-db\/prop_model_db\/model_list\/okumura-hata\/","title":{"rendered":"\u5965\u6751\u2212\u79e6\u5f0f"},"content":{"rendered":"<div class=\"pvc_clear\"><\/div><p id=\"pvc_stats_6636\" class=\"pvc_stats all  pvc_load_by_ajax_update\" data-element-id=\"6636\" style=\"\"><i class=\"pvc-stats-icon medium\" aria-hidden=\"true\"><svg aria-hidden=\"true\" focusable=\"false\" data-prefix=\"far\" data-icon=\"chart-bar\" role=\"img\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 512 512\" class=\"svg-inline--fa fa-chart-bar fa-w-16 fa-2x\"><path fill=\"currentColor\" d=\"M396.8 352h22.4c6.4 0 12.8-6.4 12.8-12.8V108.8c0-6.4-6.4-12.8-12.8-12.8h-22.4c-6.4 0-12.8 6.4-12.8 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class=\"wp-block-heading\">\u30e2\u30c7\u30eb\u306e\u6982\u8981<\/h3>\n\n\n\n<p>\u3000\u5965\u6751\u2212\u79e6\u5f0f\u306f\u3001\u9678\u4e0a\u79fb\u52d5\u901a\u4fe1\u306e\u4f1d\u642c\u640d\u3092\u5bfe\u8c61\u3068\u3057\u305f\u63a8\u5b9a\u6cd5\u3067\u3042\u308b\u30021960\u5e74\u4ee3\u521d\u3081\u306b\u643a\u5e2f\u96fb\u8a71\u30b7\u30b9\u30c6\u30e0\u306e\u7121\u7dda\u56de\u7dda\u8a2d\u8a08\u3084\u57fa\u5730\u5c40\u914d\u7f6e\u3092\u691c\u8a0e\u3059\u308b\u305f\u3081\u306b\u4f1d\u642c\u640d\u306e\u63a8\u5b9a\u6cd5\u304c\u5fc5\u8981\u3067\u3042\u3063\u305f\u3002\u3053\u306e\u63a8\u5b9a\u6cd5\u3092\u78ba\u7acb\u3059\u308b\u76ee\u7684\u3067\u30011962\u5e74\u30681965\u5e74\u306b\u95a2\u6771\u5e73\u91ce\u3068\u305d\u306e\u8fd1\u90ca\u306e\u4e18\u9675\u5730\u3084\u5c71\u5cb3\u5730\u306b\u304a\u3044\u3066450\uff5e2000MHz\u306e4\u5468\u6ce2\u6570\u3092\u7528\u3044\u305f\u4f1d\u642c\u5b9f\u9a13\u304c\u96fb\u96fb\u516c\u793e\u3067\u884c\u308f\u308c\u305f\u3002\u3053\u306e\u3068\u304d\u306b\u5f97\u3089\u308c\u305f\u7d50\u679c\u306f\u5e02\u8857\u5730\u3084\u90ca\u5916\u5730\u3001\u958b\u653e\u5730\u306b\u5206\u3051\u3089\u308c\u3066\u96fb\u754c\u5f37\u5ea6\u306e\u9001\u53d7\u4fe1\u9593\u8ddd\u96e2\u3084\u5468\u6ce2\u6570\u3001\u57fa\u5730\u5c40\u9ad8\u3001\u79fb\u52d5\u5c40\u9ad8\u306e\u7279\u6027\u3068\u3057\u3066\u307e\u3068\u3081\u3089\u308c\u305f\u3002\u307e\u305f\u3001\u4e18\u9675\u5730\u3001\u5c71\u5cb3\u5730\u3001\u50be\u659c\u5730\u5f62\u3001\u305d\u306e\u4ed6\u306e\u7279\u6b8a\u5730\u5f62\u3067\u306e\u88dc\u6b63\u65b9\u6cd5\u304c\u793a\u3055\u308c\u305f\u3002\u3055\u3089\u306b\u3001\u5468\u6ce2\u6570150\uff5e2000MHz\u3001\u57fa\u5730\u5c40\u30a2\u30f3\u30c6\u30ca\u9ad830\uff5e1000m\u3001\u8ddd\u96e21\uff5e100km\u306e\u7bc4\u56f2\u306e\u63a8\u5b9a\u6cd5\u3068\u305d\u306e\u56f3\u8868\u304c\u307e\u3068\u3081\u3089\u308c\u305f\u3002\u3053\u308c\u3089\u306e\u7d50\u679c\u304c\u5965\u6751\u30ab\u30fc\u30d6\u307e\u305f\u306f\u5965\u6751\u30e2\u30c7\u30eb\u3068\u547c\u3070\u308c\u3066\u3044\u308b[1]\u3002<\/p>\n\n\n\n<p>&nbsp;&nbsp; \u56f3\u8868\u3067\u8868\u3055\u308c\u305f\u5965\u6751\u30ab\u30fc\u30d6\u306e\u5229\u4fbf\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u30011980\u5e74\u306b\u4f5c\u6210\u3055\u308c\u305f\u63a8\u5b9a\u5f0f\u304c\u5965\u6751\u2212\u79e6\u5f0f[2,3]\u3067\u3042\u308b\u3002\u63a8\u5b9a\u5bfe\u8c61\u306e\u5730\u57df\u306f\u3001\u90fd\u5e02\u90e8\u3001\u90ca\u5916\u5730\u3001\u958b\u653e\u5730\u3067\u3042\u308a\u3001\u63a8\u5b9a\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u9001\u53d7\u4fe1\u9593\u8ddd\u96e2\u3001\u5468\u6ce2\u6570\u3001\u57fa\u5730\u5c40\u9ad8\u3001\u79fb\u52d5\u5c40\u9ad8\u3092\u7528\u3044\u308b\u3002<\/p>\n\n\n\n<p>&nbsp;&nbsp; \u5965\u6751\u2212\u79e6\u5f0f\u306e\u9069\u7528\u7bc4\u56f2\u3092\u62e1\u5f35\u3059\u308b\u6d3e\u751f\u7684\u306a\u30e2\u30c7\u30eb\u304c\u5e7e\u3064\u304b\u63d0\u6848\u3055\u308c\u3066\u3044\u308b\u3002COST-Hata-Model[4]\u3084ITU-R\u52e7\u544aP.1546\u306e\u4ed8\u9332\u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u308b\u63a8\u5b9a\u5f0f[5,6]\u3082\u305d\u306e\u4e00\u3064\u3067\u3042\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H.png\" alt=\"\" class=\"wp-image-7168\" style=\"width:715px;height:auto\" srcset=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H.png 1280w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H-300x169.png 300w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H-1024x576.png 1024w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H-768x432.png 768w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H-320x180.png 320w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u6570\u5f0f<\/h3>\n\n\n\n<p>\u4f1d\u642c\u640d\u3092\u63a8\u5b9a\u3059\u308b\u5965\u6751\u2212\u79e6\u5f0f\u306f\u6b21\u306e\u3068\u304a\u308a\u3002<\/p>\n\n\n\n<p>\uff1c\u90fd\u5e02\u90e8\uff1e<\/p>\n\n\n\n<p>\\(<br>L_p = 69.55 + 26.16 \\log f \u221213.82 \\log h_b \u2212 a(h_m) + (44.9 \u2212 6.55 \\log h_b )\uff65\\log d  \\, {\\rm [dB]}<br>\\tag{1}<br>\\)<\/p>\n\n\n\n<p>\u3053\u3053\u3067\u3001\\( a(h_m) \\) \u306f\u79fb\u52d5\u5c40\u9ad8\u7279\u6027\u3067\u6b21\u5f0f\u306e\u3068\u304a\u308a\u3002\u3000<\/p>\n\n\n\n<p>\uff1c\u4e2d\u5c0f\u90fd\u5e02\uff1e<\/p>\n\n\n\n<p class=\"has-text-align-left\">\\(<br>a(h_m) = (1.1 \\log f \u2212 0.7)\uff65h_m \u2212 (1.56 \\log f \u2212 0.8)<br>\\tag{2}<br>\\)<\/p>\n\n\n\n<p>\uff1c\u5927\u90fd\u5e02\uff1e<\/p>\n\n\n\n<p>\\(<br>a(h_m) = 8.29 [ \\log (1.54 h_m) ]^2 \u2212 1.1&nbsp;&nbsp;\\quad&nbsp; (f \u2266 200 {\\rm MHz})<br>\\tag{3}<br>\\)<br>\\(<br>a(h_m) = 3.2 [ \\log (11.75 h_m) ]^2 \u2212 4.97&nbsp;\\quad (f \u2267 400 {\\rm MHz})<br>\\tag{4}<br>\\)<\/p>\n\n\n\n<p>\uff1c\u90ca\u5916\u5730\uff1e<\/p>\n\n\n\n<p>\\(<br>L_{ps} = L_p \u2212 2 [ \\log (f \/ 28) ]^2 \u2212 5.4 \\quad {\\rm [dB]}<br>\\tag{5}<br>\\)<\/p>\n\n\n\n<p>\uff1c\u958b\u653e\u5730\uff1e<\/p>\n\n\n\n<p>\\(<br>L_{po} = L_p \u2212 4.78 [ \\log f ]^2 + 18.33 \\log f \u2212 40.94 \\quad {\\rm [dB]}<br>\\tag{6}<br>\\)<\/p>\n\n\n\n<p>\uff1c\u63a8\u5b9a\u5f0f\u306e\u30e1\u30e2\uff1e<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u5f0f\u4e2d\u306e\\(\\log\\)\u306f\u5e38\u7528\u5bfe\u6570\uff08\u5e95\u304c10\uff09\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u4ee3\u5165\u3059\u308b\u6570\u5024\u306f\u5358\u4f4d\u306b\u5408\u308f\u305b\u308b\u3002\u4f8b\u3048\u3070\u3001\u9001\u53d7\u4fe1\u9593\u8ddd\u96e2\u304c1km\u3067\u3042\u308c\u3070\\(d\\)=1\u3068\u3057\u3066\u8a08\u7b97\u3059\u308b\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u5f0f(2)\uff5e(3)\u306e\\(a(h_m)\\)\u306f\u79fb\u52d5\u5c40\u9ad8\u304c1.5m\u306e\u3068\u304d\u306b\u5168\u3066\\(a(1.5{\\rm m})\u22520\\)\u3068\u306a\u308b\u3002\u643a\u5e2f\u96fb\u8a71\u30b7\u30b9\u30c6\u30e0\u3067\u30e6\u30fc\u30b6\u304c\u8def\u4e0a\u306b\u3044\u308b\u3068\u304d\u306f\u3001\u79fb\u52d5\u5c40\u9ad8\u3092\u4eba\u306e\u8033\u306e\u9ad8\u3055\u306b\u8fd1\u30441.5m\u306b\u3059\u308b\u5834\u5408\u304c\u591a\u3044\u304c\u3001\u3053\u306e\u3068\u304d\u306e\u4f1d\u642c\u640d\u5931\u306f\u5927\u90fd\u5e02\u3068\u4e2d\u5c0f\u90fd\u5e02\u3067\u540c\u3058\u306b\u306a\u308b\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb<em> <\/em>\u5f0f(3)\u306e\u5468\u6ce2\u6570\u7bc4\u56f2(\\(f\u2266200{\\rm MHz})\\)\u306f\u6587\u732e[2]\u306e\u3068\u304a\u308a\u3067\u3001\u6587\u732e[2]\u306e\u672c\u6587\u4e2d\u306b\u4f55\u5ea6\u3082\u51fa\u3066\u304f\u308b\u306e\u3067\u6587\u732e[2]\u306e\u8a18\u8f09\u30df\u30b9\u3067\u306f\u306a\u3044\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u6587\u732e[2]\u306e\u5468\u6ce2\u6570\u306e\u9069\u7528\u7bc4\u56f2\u306f150\uff5e1500MHz\u3067\u3042\u308b\u3002\u9069\u7528\u7bc4\u56f2\u304c150\uff5e2200MHz\u3068\u306a\u3063\u3066\u3044\u308b\u8cc7\u6599\u3082\u3042\u308b\u305f\u3081\u3001ITU-R\u306a\u3069\u3067\u4e00\u6642\u671f\u5909\u66f4\u3055\u308c\u3066\u3044\u305f\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u3053\u306e\u63a8\u5b9a\u5f0f\u306f\u3001\u57fa\u5730\u5c40\u30a2\u30f3\u30c6\u30ca\u304c\u9244\u5854\u3084\u9ad8\u3044\u30d3\u30eb\u5c4b\u4e0a\u306b\u3042\u308a\u9001\u53d7\u4fe1\u9593\u8ddd\u96e2\u304c\u6570km\u306e\u30de\u30af\u30ed\u30bb\u30eb\u74b0\u5883\u3092\u5bfe\u8c61\u306b\u3057\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u958b\u653e\u5730\u3067\\(d\\)=1km\u3001\\(h_b\\)=100m\u3001\\(h_m\\)=1.5m\u306e\u3068\u304d\u306e\u4f1d\u642c\u640d\u306f\u307b\u307c\u81ea\u7531\u7a7a\u9593\u640d\u3068\u540c\u3058\u306b\u306a\u308b\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\uff1c\u5bfe\u8c61\u5730\u57df\u306e\u7279\u5fb4\uff1e<\/p>\n\n\n\n<p style=\"font-size:16px\">&nbsp;&nbsp;\u5965\u6751\u2212\u79e6\u5f0f\u306e\u5bfe\u8c61\u5730\u57df\u306f\u6e96\u5e73\u6ed1\u5730\u5f62\u3067\u3042\u308b\u3002\u6e96\u5e73\u6ed1\u5730\u5f62\u3068\u5bfe\u8c61\u5730\u57df\u306e\u7279\u5fb4\u306f\u6587\u732e[3]\u3067\u6b21\u306e\u3088\u3046\u306b\u8aac\u660e\u3055\u308c\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u6e96\u5e73\u6ed1\u5730\u5f62\u3068\u306f\u4f1d\u642c\u8def\u306e\u5730\u5f62\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u304b\u3089\u5224\u65ad\u3057\u3066\u3001\u5730\u5f62\u306e\u8d77\u4f0f\u9ad8\u304c\u7d0420m\u4ee5\u4e0b\u3067\u3001\u8d77\u4f0f\u306e\u3046\u306d\u308a\u304c\u7de9\u3084\u304b\u3067\u3042\u308b\u3088\u3046\u306a\u5e73\u5766\u306a\u5730\u5f62\u3092\u3044\u3046\u3002\u65e5\u672c\u3067\u306f\u95a2\u6771\u5e73\u91ce\u304c\u4ee3\u8868\u7684\u306a\u4f8b\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u958b\u653e\u5730\uff1a\u96fb\u6ce2\u5230\u6765\u65b9\u5411\u306b\u9ad8\u3044\u6a39\u6728\u3001\u5efa\u7269\u306a\u3069\u306e\u969c\u5bb3\u7269\u304c\u306a\u304f\u3001\u958b\u3051\u3066\u3044\u308b\u5834\u6240\u3001\u76ee\u5b89\u3068\u3057\u3066\u3001\u524d\u65b9300\uff5e400m\u4ee5\u5185\u304c\u958b\u3051\u3066\u3044\u308b\u3088\u3046\u306a\u7551\u5730\u3001\u7530\u5730\u3001\u91ce\u539f\u306a\u3069\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u90ca\u5916\u5730\uff1a\u79fb\u52d5\u5c40\u8fd1\u508d\u306b\u59a8\u5bb3\u7269\u306f\u3042\u308b\u304c\u3001\u5bc6\u96c6\u3057\u3066\u3044\u306a\u3044\u5730\u57df\u3001\u4f8b\u3048\u3070\u3001\u6a39\u6728\u3001\u5bb6\u5c4b\u306e\u6563\u5728\u3059\u308b\u7530\u5712\u5730\u5e2f\u3001\u90ca\u5916\u306e\u8857\u9053\u7b4b\u306a\u3069\u3002<\/p>\n\n\n\n<p style=\"font-size:16px\">\u30fb\u5e02\u8857\u5730\uff1a\u30d3\u30eb\u30c7\u30a3\u30f3\u30b0\u30842\u968e\u4ee5\u4e0a\u306e\u5efa\u9020\u7269\u306e\u5bc6\u96c6\u5730\u57df\u3001\u4f8b\u3048\u3070\u3001\u90fd\u5e02\u5185\u3001\u5927\u304d\u306a\u753a\u5185\u3001\u5efa\u7269\u3068\u7e41\u8302\u3057\u305f\u9ad8\u3044\u6a39\u6728\u306e\u6df7\u5408\u5bc6\u96c6\u3057\u305f\u5730\u57df\u306a\u3069\u3002\u5927\u90fd\u5e02\u3084\u4e2d\u5c0f\u90fd\u5e02\u306f\u3053\u306e\u4e2d\u306b\u542b\u307e\u308c\u308b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30d1\u30e9\u30e1\u30fc\u30bf<\/h3>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><tbody><tr><td>\u8a18\u53f7<\/td><td>\u30d1\u30e9\u30e1\u30fc\u30bf\u8aac\u660e[\u5358\u4f4d]<\/td><td>\u9069\u7528\u7bc4\u56f2<\/td><\/tr><tr><td>\\(f\\)<\/td><td>\u5468\u6ce2\u6570 [MHz]<\/td><td>150\uff5e1500 MHz<\/td><\/tr><tr><td>\\(h_b\\)<\/td><td>\u57fa\u5730\u5c40\u30a2\u30f3\u30c6\u30ca\u9ad8[m]<\/td><td>30\uff5e200 m<\/td><\/tr><tr><td>\\(d\\)<\/td><td>\u9001\u53d7\u4fe1\u9593\u8ddd\u96e2[km]<\/td><td>1\uff5e20 km<\/td><\/tr><tr><td>\\(h_m\\)<\/td><td>\u79fb\u52d5\u5c40\u30a2\u30f3\u30c6\u30ca\u9ad8[m]<\/td><td>1\uff5e10 m<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">\u8a08\u7b97\u4f8b<\/h3>\n\n\n\n<p>\u5468\u6ce2\u6570\u304c900MHz\u30681500MHz\u3067\u57fa\u5730\u5c40\u9ad8\u304c30m\u3068100m\u306e\u5834\u5408\u53ca\u3073\u5730\u57df\u5225\u306e\u5965\u6751\u2212\u79e6\u5f0f\u306e\u4f1d\u642c\u640d\u306e\u8a08\u7b97\u4f8b\u3092\u793a\u3059\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H2-2.png\" alt=\"\" class=\"wp-image-7170\" style=\"width:768px;height:auto\" srcset=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H2-2.png 1280w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H2-2-300x169.png 300w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H2-2-1024x576.png 1024w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H2-2-768x432.png 768w, https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/O-H2-2-320x180.png 320w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/figure><\/div>\n\n\n<h3 class=\"wp-block-heading\">\u30d7\u30ed\u30b0\u30e9\u30e0\u4f8b<\/h3>\n\n\n\n<p>\u5f0f(1)\uff5e(6)\u3092\u30a8\u30af\u30bb\u30eb\u3067\u8a08\u7b97\u3059\u308b\u5834\u5408\u306e\u6570\u5f0f\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3001\u300c=\u300d\u4ee5\u964d\u306e\u6570\u5f0f\u3092\u30a8\u30af\u30bb\u30eb\u306e\u30bb\u30eb\u306b\u5165\u529b\u3057\u3066\u3001\u5909\u6570\u3092\u6570\u5024\u306b\u76f4\u3059\u3068\u8a08\u7b97\u7d50\u679c\u304c\u5f97\u3089\u308c\u308b\u3002<\/p>\n\n\n\n<p>(1) &nbsp;&nbsp;Lp=69.55+26.16*log(f)-13.82*log(hb)-a+(44.9-6.55*log(hb))*log(d)<\/p>\n\n\n\n<p>(2)&nbsp;&nbsp; a=(1.1*log(f)-0.7)*hm-(1.56*log(f)-0.8)<\/p>\n\n\n\n<p>(3)<em>&nbsp; <\/em>&nbsp;a=8.29*(log(1.54*hm))^2-1.1<\/p>\n\n\n\n<p>(4)&nbsp;&nbsp; a=3.2*(log(11.75*hm))^2-4.97<\/p>\n\n\n\n<p>(5)&nbsp;&nbsp; Lps=Lp-2*(log(f\/28))^2-5.4<\/p>\n\n\n\n<p>(6)&nbsp;&nbsp; Lpo=Lp-4.78*(log(f))^2+18.33*log(f)-40.94<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c2\u8003<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.ieice.org\/cs\/ap\/wp\/wp-content\/uploads\/2022\/03\/Okumura-Hata_ITURP1546.pdf\" target=\"_blank\" rel=\"noreferrer noopener\">ITU-R&nbsp;\u52e7\u544aP.1546\u306b\u793a\u3055\u308c\u308b\u5965\u6751\u2212\u79e6\u5f0f\u3092\u57fa\u306b\u3057\u305f\u63a8\u5b9a\u5f0f<\/a><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53c2\u7167<\/h2>\n\n\n\n[1] \u5965\u6751\u5584\u4e45\uff0c\u5927\u68ee\u82f1\u4e8c\uff0c\u6cb3\u91ce\u5341\u4e09\u5f66\uff0c\u798f\u7530\u501a\u6cbb\uff0c\u201c\u9678\u4e0a\u79fb\u52d5\u7121\u7dda\u306b\u304a\u3051\u308b\u4f1d\u642c\u7279\u6027\u306e\u5b9f\u9a13\u7684\u7814\u7a76\uff0c\u201d\u7814\u5b9f\u5831, vol.16, no.9, pp.1705-1764, 1967.<\/p>\n\n\n\n[2] M. Hata, \u201cEmpirical formula for propagation loss in land mobile radio services, \u201dIEEE Trans. Veh. Technol., vol.VT-29, no.3, pp.317-325, Aug. 1980.<\/p>\n\n\n\n[3] \u5965\u6751\u5584\u4e45\uff0c\u660e\u5c71\u54f2\uff0c&#8221;\u79fb\u52d5\u901a\u4fe1\u306e\u96fb\u6ce2\u4f1d\u642c\uff0c&#8221;\u79fb\u52d5\u901a\u4fe1\u306e\u57fa\u790e\uff0c\u5965\u6751\u5584\u4e45\uff0c\u9032\u58eb\u660c\u660e\uff08\u76e3\u4fee\uff09\uff0c\u7b2c2\u7ae0\uff0c\uff08\u793e\uff09\u96fb\u5b50\u60c5\u5831\u901a\u4fe1\u5b66\u4f1a\uff0c\u6771\u4eac\uff0c1986.<\/p>\n\n\n\n[4] COST 231 &#8211; Hata-Model, 4.4 Propagation Models for Macro-Cells, Digital mobile radio towards future generation systems, COST 231 Final Report, pp. 134-135,<\/p>\n\n\n\n<p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; http:\/\/www.lx.it.pt\/cost231\/final_report.htm<\/p>\n\n\n\n[5] Rec. ITU-R P.1546-6, &#8220;Method for point-to-area predictions for terrestrial services in the frequency range 30 MHz to 4 000 MHz&#8221;, ITU-R, 2019.<\/p>\n\n\n\n[6] \u9ad8\u7530\u6f64\u4e00\uff0c&#8221;\u79fb\u52d5\u901a\u4fe1\u4f1d\u642c\uff0c&#8221;\u30a2\u30f3\u30c6\u30ca\u5de5\u5b66\u30cf\u30f3\u30c9\u30d6\u30c3\u30af&#8221;\uff08\u7b2c2\u7248\uff09\uff0c\u6fa4\u8c37\u90a6\u7537\uff08\u59d4\u54e1\u9577\uff09\uff0c13\u7ae013\u30fb7\u7bc0\uff0c\uff08\u793e\uff09\u96fb\u5b50\u60c5\u5831\u901a\u4fe1\u5b66\u4f1a\uff0c\u6771\u4eac\uff0c2008.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30e2\u30c7\u30eb\u306e\u6982\u8981 \u3000\u5965\u6751\u2212\u79e6\u5f0f\u306f\u3001\u9678\u4e0a\u79fb\u52d5\u901a\u4fe1\u306e\u4f1d\u642c\u640d\u3092\u5bfe\u8c61\u3068\u3057\u305f\u63a8\u5b9a\u6cd5\u3067\u3042\u308b\u30021960\u5e74\u4ee3\u521d\u3081\u306b\u643a\u5e2f\u96fb\u8a71\u30b7\u30b9\u30c6\u30e0\u306e\u7121\u7dda\u56de\u7dda\u8a2d\u8a08\u3084\u57fa\u5730\u5c40\u914d\u7f6e\u3092\u691c\u8a0e\u3059\u308b\u305f\u3081\u306b\u4f1d\u642c\u640d\u306e\u63a8\u5b9a\u6cd5\u304c\u5fc5\u8981\u3067\u3042\u3063\u305f\u3002\u3053\u306e\u63a8\u5b9a\u6cd5\u3092\u78ba\u7acb\u3059\u308b\u76ee\u7684\u3067\u30011962\u5e74 [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":0,"parent":12073,"menu_order":21,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"class_list":["post-6636","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/6636","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/comments?post=6636"}],"version-history":[{"count":53,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/6636\/revisions"}],"predecessor-version":[{"id":14864,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/6636\/revisions\/14864"}],"up":[{"embeddable":true,"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/pages\/12073"}],"wp:attachment":[{"href":"https:\/\/www.ieice.org\/cs\/ap\/wp-json\/wp\/v2\/media?parent=6636"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}