{"id":300,"date":"2020-10-09T21:08:01","date_gmt":"2020-10-09T12:08:01","guid":{"rendered":"http:\/\/www.tmele.jp\/en2020\/?post_type=case&#038;p=300"},"modified":"2021-01-19T07:08:33","modified_gmt":"2021-01-18T22:08:33","slug":"%e8%89%a6%e8%88%b9%e7%94%a8rof","status":"publish","type":"case","link":"https:\/\/www.tmele.jp\/en2020\/case\/300\/","title":{"rendered":"RoF for Battleships"},"content":{"rendered":"<div class=\"inside fields flexs nowrap justify\">\n<div>\n<p>Regarding satellite communications of Japanese Self Defense Force, frequency bands, X, Ku, L and Ka are mainly used.<br \/>\nAmang those band, X band is especially used for significant communications, such as chain of command for operating forces or operational information support.<\/p>\n<p>It&#8217;s satellite communication for the following purposes;<br \/>\nSecuring smooth correspondence amang Self-Defense Forces on the ground, see and in the Sky.<br \/>\nSatisfactory communication capacity which enables transmissions of bigger-size-images and video data.<br \/>\nSecuring enough communications for the forces operating overseas.<\/p>\n<p>RoF devices, produced by TAMAGAWA Electronics, were already installed in those satellite base stations on the ground.<br \/>\nThe signal transmission from a base station on the ground runs with IF signals. (Direct modulation of X band is also possible.)<\/p>\n<p>It is a RoF devices that connect from transceiving antenna to base stations with optical fibers which are durable against foreign noises and can achieve lower-loss under long distance communications.<\/p>\n<p>In order to realize weight-saving, there are some cases to introduce optical transmission into battleships, focucing on lightning protection or light-weight.<\/p>\n<p><small>Rof: Rof stands for Radio over Fiber<\/small><\/p>\n<\/p><\/div>\n<figure><img decoding=\"async\" src=\"https:\/\/www.tmele.jp\/en2020\/wp-content\/themes\/tamagawadenshi\/images\/case\/case01_gov04_simulator_0.jpg\" alt=\"\"><\/figure>\n<\/div>\n<p><!--h2 class=\"underbar-headcolor\">\u30d6\u30ed\u30c3\u30af\u6982\u8981<\/h2>\n\n\n\n\n<div>\n<img decoding=\"async\" src=\"[sctpl]\/images\/case\/case01_gov04_simulator_1.jpg\" width=\"1000\" height=\"auto\" class=\"alignnone size-full wp-image-249\" alt=\"\u8266\u8239\u7528RoF\u3000\u30d6\u30ed\u30c3\u30af\u30a4\u30e1\u30fc\u30b8\u56f3\" \/>\n\n\n<p>&nbsp;<\/p>\n\n\n\n\n<p style=\"text-align:center;\">\u8266\u8239\u7528RoF\u3000\u30d6\u30ed\u30c3\u30af\u30a4\u30e1\u30fc\u30b8\u56f3<\/p>\n\n\n<\/div>\n\n\n\n\n\n<h3>\u5b9f\u7e3e\u30d6\u30ed\u30c3\u30af\u306e\u6a5f\u80fd<\/h3>\n\n\n\n\n<p>\u30a2\u30f3\u30c6\u30ca\u3067\u53d7\u4fe1\u3057\u305f\u4fe1\u53f7\u306fIF\u4fe1\u53f7\u3078\u3068\u30c0\u30a6\u30f3\u30b3\u30f3\u30d0\u30fc\u30c8\u3055\u308c\u3001E\/O\u30b3\u30f3\u30d0\u30fc\u30bf\u306b\u5165\u529b\u3055\u308c\u307e\u3059\u3002\u5165\u529b\u3055\u308c\u305fIF\u4fe1\u53f7\u306f\u5149\u4fe1\u53f7\u3078\u3068\u5909\u63db\u3055\u308c\u3001\u5149\u30d5\u30a1\u30a4\u30d0\u306b\u3088\u308a\u57fa\u5730\u5c40\u3078\u3068\u4f1d\u9001\u3055\u308c\u307e\u3059\u3002\u57fa\u5730\u5c40\u3067\u306fO\/E\u30b3\u30f3\u30d0\u30fc\u30bf\u306b\u3088\u308a\u518d\u5ea6IF\u4fe1\u53f7\u3078\u3068\u5fa9\u8abf\u3055\u308c\u5404\u7a2e\u6a5f\u5668\u3078\u3068\u4fe1\u53f7\u3092\u4f1d\u9001\u3057\u307e\u3059\u3002\u57fa\u5730\u5c40\u304b\u3089\u30a2\u30f3\u30c6\u30ca\u3078\u306e\u4fe1\u53f7\u306e\u4f1d\u9001\u3082\u9006\u306e\u624b\u9806\u306b\u3088\u308a\u51fa\u529b\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n\n<h2 class=\"underbar-headcolor\">\u4e3b\u8981\u6027\u80fd<\/h2>\n\n\n\u25a0RF\u90e8\n\n\n<ul class=\"square36\">\n\n\n<li>\u5468\u6ce2\u6570\u7bc4\u56f2\u3000\uff5e3GHz\u307e\u3067\u4f7f\u7528\u53ef\u80fd<br \/>\n\u203bX\u30d0\u30f3\u30c9(~10GHz)\u3067\u306e\u76f4\u63a5\u5909\u8abf\u3082\u5bfe\u5fdc\u53ef\u80fd<\/li>\n\n\n\n\n<li>\u4f1d\u9001\u5229\u5f97\u30000dB<\/li>\n\n\n\n\n<li>\u5e2f\u57df\u5185\u632f\u5e45\u504f\u5dee\u30003dB\u4ee5\u5185<\/li>\n\n\n<\/ul>\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n\u25a0\u5149\u90e8\n\n\n<ul class=\"square36\">\n\n\n<li>\u5149\u6ce2\u9577\u30001.3\u03bcm<\/li>\n\n\n\n\n<li>\u5149\u5909\u8abf\u65b9\u5f0f\u3000\u30a2\u30ca\u30ed\u30b0\u5149\u5909\u8abf<\/li>\n\n\n\n\n<li>\u5149\u30b1\u30fc\u30d6\u30eb\u3000\u30b7\u30f3\u30b0\u30eb\u30e2\u30fc\u30c9(SM)<\/li>\n\n\n<\/ul>\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n\n\n<div>\n<img decoding=\"async\" src=\"[sctpl]\/images\/case\/case01_gov04_simulator_2.jpg\" width=\"1000\" height=\"auto\" class=\"alignnone size-full wp-image-249\" alt=\"(\u5de6)\u5149\u90e8\u3001(\u53f3)RF\u90e8\" \/>\n\n\n<p>&nbsp;<\/p>\n\n\n<\/div-->\n","protected":false},"featured_media":0,"menu_order":4,"template":"","case_tax":[50],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/case\/300"}],"collection":[{"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/case"}],"about":[{"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/types\/case"}],"wp:attachment":[{"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/media?parent=300"}],"wp:term":[{"taxonomy":"case_tax","embeddable":true,"href":"https:\/\/www.tmele.jp\/en2020\/wp-json\/wp\/v2\/case_tax?post=300"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}