{"id":2099,"date":"2024-12-12T00:00:00","date_gmt":"2024-12-12T00:00:00","guid":{"rendered":"urn:uuid:0026c256-de5c-4fb7-90a0-e73481c8b3df"},"modified":"2024-12-12T00:00:00","modified_gmt":"2024-12-12T00:00:00","slug":"gpsnohua-ti-3tu-xiang-dui-lun-bu-zheng-4tunowei-xing-nometusesiwotong-shi-niwen-kufang-fa-wei-xiang-jian-bo-nohatouea","status":"publish","type":"post","link":"https:\/\/www.sekaiken.com\/?p=2099","title":{"rendered":"GPS\u306e\u8a71\u984c\uff13\u3064\u3000\u76f8\u5bfe\u8ad6\u88dc\u6b63\u3001\uff14\u3064\u306e\u885b\u661f\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u540c\u6642\u306b\u805e\u304f\u65b9\u6cd5\u3001\u4f4d\u76f8\u691c\u6ce2\u306e\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2"},"content":{"rendered":"<p>GPS\u306e\u8a71\u984c\u3067\u3042\u30683\u3064\u8a71\u3057\u305f\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<br \/>\n(1) \u76f8\u5bfe\u8ad6\u88dc\u6b63\uff1a\u539f\u5b50\u6642\u8a08\u306f\u7c21\u5358\u306a\u3082\u306e\u3067\u308210^-11\u306e\u7cbe\u5ea6\u304c\u3042\u308a\u307e\u3059\u3002\u6e2c\u4f4d\u885b\u661f\u306f2\u4e07\u30ad\u30ed\u306e\u4e0a\u7a7a(cf. \u5730\u7403\u306e\u534a\u5f84\u306f3000\u30ad\u30ed\uff09\u3092\u98db\u3093\u3067\u3044\u308b\u306e\u3067\u3001\u7b2c\u4e00\u5b87\u5b99\u901f\u5ea68km\/s\u3088\u308a\u306f\u3060\u3044\u3076\u304a\u305d\u304f3.9km\/s\u3060\u305d\u3046\u3067\u3059\u3002\u305d\u308c\u3067\u3082\u539f\u5b50\u6642\u8a08\u306e\u7cbe\u5ea6\u3067\u306f\u9045\u308c\u304c\u751f\u3058\u3001\u4e0b\u8a18\u8a18\u4e8b\u306b\u3088\u308b\u30681\u65e5\u3042\u305f\u308a7\u03bc\u79d2\u9045\u308c\u308b\u305d\u3046\u3067\u3059\u3002\u76f8\u5bfe\u8ad6\u88dc\u6b63\u306f1-\u221a(1-(v\/c)^2)\u3067\u3001v=3.9km\/s, c=3&#215;10^5km\/s\u3068\u3059\u308b\u30688.45&#215;10^-11\u306e\u5272\u5408\u3067\u30011\u65e586400s\u3092\u304b\u3051\u308b\u30687&#215;10^-6s\u3068\u306a\u308b\u306e\u3067\u3042\u3063\u3066\u3044\u307e\u3059\u306d\u3002\u3053\u306e\u9045\u308c\u306f\u88dc\u6b63\u3057\u3066\u3044\u308b\u305d\u3046\u3067\u3059\u3002<\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"mdrSGZ7tob\"><p><a href=\"https:\/\/www.gpsworld.com\/inside-the-box-gps-and-relativity\/\">Inside the box: GPS and relativity<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"&#8220;Inside the box: GPS and relativity&#8221; &#8212; GPS World\" src=\"https:\/\/www.gpsworld.com\/inside-the-box-gps-and-relativity\/embed\/#?secret=P5cjoiQRJK#?secret=mdrSGZ7tob\" data-secret=\"mdrSGZ7tob\" width=\"500\" height=\"282\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><br \/>\n(2) \u540c\u3058\u5468\u6ce2\u6570\u306e4\u3064\u306e\u885b\u661f\u4fe1\u53f7\u3092\u540c\u6642\u306b\u53d7\u4fe1\u3057\u3066\u3044\u308b\u70b9\uff1a\u9060\u304f\u304b\u3089\u304f\u308b\u58f0\u306e\u5927\u304d\u3055\u304c\u9055\u30464\u4eba\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\uff08\u81ea\u5206\u306e\u540d\u524d\u3068\u73fe\u5728\u6642\u523b\u3092\u5ef6\u3005\u3068\u3057\u3083\u3079\u3063\u3066\u3044\u308b\uff09\u3092\u805e\u304d\u5206\u3051\u3066\u3044\u308b\u3053\u3068\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002\u8056\u5fb3\u592a\u5b50\u306f10\u4eba\u3067\u3059\u304c\u3001\u79c1\u306f2\u4eba\u3067\u3082\u602a\u3057\u3044\u3067\u3059\u3002\u5b89\u3044\u30b9\u30de\u30db\u3067\u3082GPS\u53d7\u4fe1\u306f\u3067\u304d\u308b\u306e\u3067\u9a5a\u304d\u3067\u3059\u30021.1GHz\u3068\u304b1.5GHz\u3068\u304b\u306e\u96fb\u6ce2\u3092\u30b9\u30de\u30db\u5185\u306e\u5c0f\u3055\u3044\u30a2\u30f3\u30c6\u30ca\u3067\u53d7\u3051\u3066\u9ad8\u5468\u6ce2\u5897\u5e45\u3057\u3001\u305d\u308c\u306b1.1GHz\u306a\u3069\u5185\u90e8\u3067\u4f5c\u3063\u305f\u9ad8\u5468\u6ce2\u3092\u304b\u3051\u3066\u305d\u306e\u5468\u6ce2\u6570\u6210\u5206\u3092\u53d6\u308a\u51fa\u3057\u3066\u304b\u3089\uff08\uff1d\u691c\u6ce2\u3068\u3044\u3046\uff09\u89e3\u6790\u3057\u3066\u3044\u308b\u3068\u601d\u3044\u307e\u3059\u3002\u5927\u304d\u3055\u304c\u9055\u3046\u4fe1\u53f7\u304c\u3092\u5206\u3051\u308b\u306e\u306f\u304b\u306a\u308a\u9762\u5012\u3067\u3059\u3002\u3082\u3057\u304b\u3057\u305f\u3089\u885b\u661f\u306b\u3088\u3063\u3066\u5468\u6ce2\u6570\u3092\u5c11\u3057\u5909\u3048\u3066\u3044\u308b\u306e\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u305d\u3046\u3060\u3068\u3059\u308b\u3068\u305d\u308c\u305e\u308c\u306e\u5468\u6ce2\u6570\u306e\u9ad8\u5468\u6ce2\u3092\u4f7f\u3063\u3066\u691c\u6ce2\u3067\u304d\u308b\u306e\u3067\u697d\u3067\u3059\u3002\u3053\u308c\u306f\u58f0\u306e\u9ad8\u3055\u304c\u9055\u3046\u8907\u6570\u4eba\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u7279\u5b9a\u306e\u9ad8\u3055\u306b\u5fdc\u7b54\u3059\u308b\u5171\u632f\u5668\u3067\u5206\u96e2\u3059\u308b\u3053\u3068\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u5468\u6ce2\u6570\u5dee\u306e\u9006\u6570\u306b\u5bfe\u5fdc\u3059\u308b\u6642\u9593\uff08MHz\u306a\u3089\u30de\u30a4\u30af\u30ed\u79d2\uff09\u304c\u5fc5\u8981\u306b\u306a\u308a\u307e\u3059\u3002<br \/>\n(3)\u6628\u65e5\u306e\u642c\u9001\u6ce2\u4f4d\u76f8\u3092\u6c42\u3081\u308b\u306e\u306f\u3061\u3087\u3063\u3068\u9762\u5012\u3067\u3059\u3002\u4f4e\u5468\u6ce2\u306a\u3089\u4e0b\u8a18\u306e\u3088\u3046\u306b\u30c7\u30b8\u30bf\u30eb\u5316\u3057\u3066\u6f14\u7b97\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002GHz\u5e2f\u3060\u3068\u975e\u7dda\u5f62\u7d20\u5b50\u3092\u4f7f\u3063\u3066\u30a2\u30ca\u30ed\u30b0\u6f14\u7b97\u3059\u308b\u3057\u304b\u306a\u3044\u3088\u3046\u306a\u6c17\u304c\u3057\u307e\u3059\u304c\u3001\u9ad8\u901f\u306a\u534a\u5c0e\u4f53\u3092\u4f7f\u3048\u3070\u30ae\u30ea\u30ae\u30ea\u53ef\u80fd\u3067\u3057\u3087\u3046\u304b\u3002\u307e\u305f\u3001\u53d7\u4fe1\u6a5f\u3082\u539f\u5b50\u6642\u8a08\u3092\u6301\u3063\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u305d\u3046\u3067\u3059\u3002GPS\u53d7\u4fe1\u88c5\u7f6e\u306f\u4e16\u754c\u4e2d\u306b\u30e1\u30fc\u30ab\u30fc\u304c\u305f\u304f\u3055\u3093\uff0810\u793e\u4ee5\u4e0a\uff09\u3042\u308a\u307e\u3059\u3002\u72ec\u81ea\u306e\u6280\u8853\u958b\u767a\u304c\u53ef\u80fd\u306a\u8981\u7d20\u304c\u3042\u308b\u306e\u3068\u3001\u5132\u304b\u308b\u306e\u3067\u3057\u3087\u3046\u3002<br \/>\nhttps:\/\/www.nfcorp.co.jp\/techinfo\/keisoku_kouza\/pd\/<\/p>\n<p>\u82f1\u8a9e\u306f\u3000https:\/\/en.wikipedia.org\/wiki\/Phase_detector\u3000<br \/>\n\u4f4d\u76f8\u691c\u6ce2 phase detection<br \/>\n&ldquo;The actual input signals to the phase detector, however, are not \u03b1 and \u03b2, but rather sinusoids such as sin(\u03b1) and cos(\u03b2). In general, computing the phase difference would involve computing the arcsine and arccosine of each normalized input (to get an ever-increasing phase) and doing a subtraction. Such an analog calculation is difficult. Fortunately, the calculation can be simplified by using some approximations. &rdquo;<br \/>\nsinusoid \/ sinusoidal function \u6b63\u5f26\u95a2\u6570<br \/>\ntrigonometric functions \u4e09\u89d2\u95a2\u6570<br \/>\narcsine and arccosine \u30a2\u30fc\u30af\u30b5\u30a4\u30f3\u3000\u3068\u3000\u30a2\u30fc\u30af\u30b3\u30b5\u30a4\u30f3\uff08sin\u3068cos\u306e\u9006\u95a2\u6570\uff09<br \/>\nnormalized input \u898f\u683c\u5316\u3055\u308c\u305f\u5165\u529b<br \/>\never-increasing phase \u5358\u8abf\u5897\u52a0\u3059\u308b\u4f4d\u76f8<br \/>\n\u201dTwo common implementations for multipliers are the double balanced diode mixer, diode ring and the four-quadrant multiplier, Gilbert cell. \u201d<br \/>\nimplementation \u5b9f\u88c5<br \/>\nmultiplier \u4e57\u7b97\u5668<br \/>\n\u203b two common implementations \u3068\u8a00\u3044\u306a\u304c\u3089\uff14\u3064\u6319\u3052\u3066\u3044\u308b\u306e\u306f\u9593\u9055\u3044\u3067\u3057\u3087\u3046\u304c\u3001\u30ae\u30e3\u30b0\u306e\u3088\u3046\u3067\u9762\u767d\u3044\u3067\u3059\u3002\u4ed6\u306e\u65b9\u5f0f\u306f\u30b3\u30a4\u30eb\u304c\u5fc5\u8981\u3067\u5fae\u7d30\u5316\u304c\u96e3\u3057\u3044\u306e\u3067\u3001\u30b9\u30de\u30db\u306e\u691c\u6ce2\u306f Gilbert cell\u3092\u4f7f\u3063\u3066\u3044\u308b\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\nhttps:\/\/en.wikipedia.org\/wiki\/Gilbert_cell<br \/>\nhttps:\/\/www.fbnews.jp\/202301\/imasara\/<\/p>\n","protected":false},"excerpt":{"rendered":"<p>GPS\u306e\u8a71\u984c\u3067\u3042\u30683\u3064\u8a71\u3057\u305f\u3044\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002 (1) \u76f8\u5bfe\u8ad6\u88dc\u6b63\uff1a\u539f\u5b50\u6642\u8a08\u306f\u7c21\u5358\u306a\u3082\u306e\u3067\u308210^-11\u306e\u7cbe\u5ea6\u304c\u3042\u308a\u307e\u3059\u3002\u6e2c\u4f4d\u885b\u661f\u306f2\u4e07\u30ad\u30ed\u306e\u4e0a\u7a7a(cf. \u5730\u7403\u306e\u534a\u5f84\u306f3000\u30ad\u30ed\uff09\u3092\u98db\u3093\u3067\u3044\u308b\u306e\u3067\u3001\u7b2c\u4e00\u5b87\u5b99\u901f\u5ea68km\/s\u3088\u308a\u306f\u3060\u3044\u3076\u304a\u305d\u304f3.9km\/s\u3060\u305d\u3046\u3067\u3059\u3002\u305d\u308c\u3067\u3082\u539f\u5b50\u6642\u8a08\u306e\u7cbe\u5ea6\u3067\u306f\u9045\u308c\u304c\u751f\u3058\u3001\u4e0b\u8a18\u8a18\u4e8b\u306b\u3088\u308b\u30681\u65e5\u3042\u305f\u308a7\u03bc\u79d2\u9045\u308c\u308b\u305d\u3046\u3067\u3059\u3002\u76f8\u5bfe\u8ad6\u88dc\u6b63\u306f1-\u221a(1-(v\/c)^2)\u3067\u3001v=3.9km\/s, c=3&#215;10^5km\/s\u3068\u3059\u308b\u30688.45&#215;10^-11\u306e\u5272\u5408\u3067\u30011\u65e586400s\u3092\u304b\u3051\u308b\u30687&#215;10^-6s\u3068\u306a\u308b\u306e\u3067\u3042\u3063\u3066\u3044\u307e\u3059\u306d\u3002\u3053\u306e\u9045\u308c\u306f\u88dc\u6b63\u3057\u3066\u3044&hellip;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[42],"tags":[5],"class_list":["post-2099","post","type-post","status-publish","format-standard","hentry","category-tech","tag-tech"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/posts\/2099","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2099"}],"version-history":[{"count":0,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=\/wp\/v2\/posts\/2099\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2099"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2099"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sekaiken.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2099"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}