{"id":4039,"date":"2026-09-19T10:01:31","date_gmt":"2026-09-19T01:01:31","guid":{"rendered":"https:\/\/y42u.net\/tec001\/2026\/09\/19\/gnss-cold-start-ttff-ephemeris-almanac-field\/"},"modified":"2026-09-26T10:38:47","modified_gmt":"2026-09-26T01:38:47","slug":"gnss-cold-start-ttff-ephemeris-almanac-field","status":"publish","type":"post","link":"https:\/\/y42u.net\/tec001\/2026\/09\/19\/gnss-cold-start-ttff-ephemeris-almanac-field\/","title":{"rendered":"GNSS\u53d7\u4fe1\u6a5f\u306f\u96fb\u6e90\u3092\u5165\u308c\u3066\u3059\u3050\u6e2c\u308c\u306a\u3044\u306e\u306f\u306a\u305c\uff1f \u2014 12.5\u5206\u304b\u304b\u308b\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u3068\u3001\u73fe\u5834\u3067\u5f85\u3061\u6642\u9593\u3092\u77ed\u304f\u3059\u308b\u9806\u756a"},"content":{"rendered":"<style>img.autopost-single-image{width:30%;max-width:100%;height:auto;display:block;}@media (max-width: 768px){img.autopost-single-image{width:50%;}}<\/style>\n<p><img decoding=\"async\" style=\"width:80%;max-width:100%;height:auto;display:block;margin:0 auto;\" src=\"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/09\/gde-gnss-cold-start-ttff-ephemeris-almanac-field.jpeg\" alt=\"GNSS\u53d7\u4fe1\u6a5f\u306f\u96fb\u6e90\u3092\u5165\u308c\u3066\u3059\u3050\u6e2c\u308c\u306a\u3044\u306e\u306f\u306a\u305c\uff1f \u2014 12.5\u5206\u304b\u304b\u308b\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u3068\u3001\u73fe\u5834\u3067\u5f85\u3061\u6642\u9593\u3092\u77ed\u304f\u3059\u308b\u9806\u756a\"><\/p>\n<h1 id=\"gnss-125\">GNSS\u53d7\u4fe1\u6a5f\u306f\u96fb\u6e90\u3092\u5165\u308c\u3066\u3059\u3050\u6e2c\u308c\u306a\u3044\u306e\u306f\u306a\u305c\uff1f \u2014 12.5\u5206\u304b\u304b\u308b\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u3068\u3001\u73fe\u5834\u3067\u5f85\u3061\u6642\u9593\u3092\u77ed\u304f\u3059\u308b\u9806\u756a<\/h1>\n<p>\u885b\u661f\u304c\u4f4d\u7f6e\u60c5\u5831\u3092\u6bce\u79d2\u3070\u3089\u307e\u3044\u3066\u3044\u308b\u306e\u306b\u5f85\u305f\u3055\u308c\u308b\u306e\u306f\u3001<strong>\u53d7\u4fe1\u6a5f\u304c\u300c\u885b\u661f\u304c\u3044\u307e\u3069\u3053\u306b\u3044\u308b\u304b\u300d\u3092\u885b\u661f\u81ea\u8eab\u304b\u3089\u8aad\u307f\u53d6\u308a\u7d42\u3048\u308b\u307e\u3067\u6e2c\u4f4d\u3067\u304d\u306a\u3044<\/strong>\u304b\u3089\u3067\u3059\u3002GPS L1 C\/A \u306e\u822a\u6cd5\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u6bce\u79d250\u30d3\u30c3\u30c8\u3002\u8ecc\u9053\u306e\u7cbe\u5bc6\u5024\uff08\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\uff09\u3060\u3051\u3067\u7d0430\u79d2\u3001\u5168\u885b\u661f\u306e\u6982\u7565\u8ecc\u9053\uff08\u30a2\u30eb\u30de\u30ca\u30c3\u30af\uff09\u306f12.5\u5206\u304b\u304b\u308a\u307e\u3059\u3002\u73fe\u5834\u306e\u5f85\u3061\u6642\u9593\u306f\u3001\u3053\u306e\u300c\u8aad\u307f\u53d6\u308a\u304c\u3069\u3053\u307e\u3067\u6e08\u3093\u3067\u3044\u308b\u304b\u300d\u3067\u6c7a\u307e\u308a\u307e\u3059\u3002<\/p>\n<h2 id=\"_1\">\u96fb\u6e90\u6295\u5165\u76f4\u5f8c\u3001\u53d7\u4fe1\u6a5f\u304c\u77e5\u3089\u306a\u3044\u3053\u3068<\/h2>\n<p>\u6e2c\u4f4d\u306e\u5f0f\u3092\u7acb\u3066\u308b\u306b\u306f\u3001<strong>\u885b\u661f\u306e\u4f4d\u7f6e<\/strong>\u3068<strong>\u4fe1\u53f7\u306e\u98db\u884c\u6642\u9593<\/strong>\u304c\u8981\u308a\u307e\u3059\u3002\u5de5\u5834\u51fa\u8377\u72b6\u614b\u306e\u53d7\u4fe1\u6a5f\u306f\u3001\u3053\u306e\u3046\u3061\u885b\u661f\u306e\u4f4d\u7f6e\u3092\u3072\u3068\u3064\u3082\u6301\u3063\u3066\u3044\u307e\u305b\u3093\u3002\u6642\u8a08\u3082\u3001\u81ea\u5206\u304c\u3069\u306e\u5927\u9678\u306b\u3044\u308b\u304b\u3082\u5206\u304b\u308a\u307e\u305b\u3093\u3002<\/p>\n<ul>\n<li>\u81ea\u5206\u306e\u304a\u304a\u3088\u305d\u306e\u4f4d\u7f6e\uff08\u3069\u306e\u885b\u661f\u304c\u7a7a\u306b\u3044\u308b\u304b\u7d5e\u308a\u8fbc\u3080\u306e\u306b\u4f7f\u3046\uff09<\/li>\n<li>\u73fe\u5728\u6642\u523b\uff08\u885b\u661f\u3092\u63a2\u3059\u5468\u6ce2\u6570\u30fb\u30bf\u30a4\u30df\u30f3\u30b0\u306e\u76ee\u5b89\u306b\u306a\u308b\uff09<\/li>\n<li>\u5404\u885b\u661f\u306e\u8ecc\u9053\u60c5\u5831<\/li>\n<\/ul>\n<p>\u3053\u306e3\u3064\u304c\u63c3\u3063\u3066\u3044\u306a\u3044\u72b6\u614b\u304b\u3089\u306e\u8d77\u52d5\u304c<strong>\u30b3\u30fc\u30eb\u30c9\u30b9\u30bf\u30fc\u30c8<\/strong>\u3067\u3059\u3002\u53d7\u4fe1\u6a5f\u306f\u7a7a\u306b\u5411\u304b\u3063\u3066\u7dcf\u5f53\u305f\u308a\u3067\u4fe1\u53f7\u3092\u63a2\u3057\u3001\u898b\u3064\u3051\u305f\u885b\u661f\u304c\u6d41\u3057\u3066\u3044\u308b\u653e\u9001\u3092\u6700\u521d\u304b\u3089\u8aad\u3080\u3057\u304b\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<h2 id=\"50\">\u822a\u6cd5\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u300c\u6bce\u79d250\u30d3\u30c3\u30c8\u300d\u3067\u6d41\u308c\u3066\u3044\u308b<\/h2>\n<p>GPS\u306eL1 C\/A\u4fe1\u53f7\u306b\u4e57\u3063\u3066\u3044\u308b\u822a\u6cd5\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u69cb\u9020\u306f\u6c7a\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u5358\u4f4d<\/th>\n<th>\u4e2d\u8eab<\/th>\n<th>\u6240\u8981\u6642\u9593<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30b5\u30d6\u30d5\u30ec\u30fc\u30e0\uff08300\u30d3\u30c3\u30c8\uff09<\/td>\n<td>1\/5\u30d5\u30ec\u30fc\u30e0<\/td>\n<td>6\u79d2<\/td>\n<\/tr>\n<tr>\n<td>1\u30d5\u30ec\u30fc\u30e0\uff081500\u30d3\u30c3\u30c8\uff09<\/td>\n<td>\u30b5\u30d6\u30d5\u30ec\u30fc\u30e01\u301c5<\/td>\n<td>30\u79d2<\/td>\n<\/tr>\n<tr>\n<td>\u30b5\u30d6\u30d5\u30ec\u30fc\u30e01\u301c3<\/td>\n<td>\u305d\u306e\u885b\u661f\u306e<strong>\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9<\/strong>\uff08\u7cbe\u5bc6\u8ecc\u9053\uff09\u3068\u6642\u8a08\u88dc\u6b63<\/td>\n<td>\u7d0418\u79d2\u3076\u3093<\/td>\n<\/tr>\n<tr>\n<td>\u30b5\u30d6\u30d5\u30ec\u30fc\u30e04\u30fb5<\/td>\n<td><strong>\u30a2\u30eb\u30de\u30ca\u30c3\u30af<\/strong>\u309225\u30da\u30fc\u30b8\u306b\u5206\u3051\u305f\u3046\u3061\u306e1\u30da\u30fc\u30b8<\/td>\n<td>25\u30d5\u30ec\u30fc\u30e0\uff1d12.5\u5206<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u8aad\u307f\u65b9\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u3001<strong>\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u306f1\u30d5\u30ec\u30fc\u30e0\u3067\u5b8c\u7d50\u3059\u308b\u304c\u3001\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u306f25\u30d5\u30ec\u30fc\u30e0\u304b\u3051\u306a\u3044\u3068\u63c3\u308f\u306a\u3044<\/strong>\u3053\u3068\u3067\u3059\u3002\u901f\u5ea6\u306f50bps\u2014\u2014\u5bb6\u5ead\u7528\u56de\u7dda\u3069\u3053\u308d\u304b\u30c0\u30a4\u30e4\u30eb\u30a2\u30c3\u30d7\u306b\u3082\u9060\u304f\u53ca\u3070\u306a\u3044\u901f\u3055\u3067\u3001\u3053\u3053\u306f\u7269\u7406\u7684\u306b\u77ed\u7e2e\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<h3 id=\"_2\">\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u3068\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u306e\u5f79\u5272\u306e\u9055\u3044<\/h3>\n<table>\n<thead>\n<tr>\n<th><\/th>\n<th>\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9<\/th>\n<th>\u30a2\u30eb\u30de\u30ca\u30c3\u30af<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7cbe\u5ea6<\/td>\n<td>\u7cbe\u5bc6\uff08\u6e2c\u4f4d\u8a08\u7b97\u306b\u4f7f\u3046\uff09<\/td>\n<td>\u6982\u7565\uff08\u885b\u661f\u63a2\u3057\u306e\u898b\u5f53\u3092\u3064\u3051\u308b\u7528\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u5bfe\u8c61<\/td>\n<td>\u305d\u306e\u885b\u661f\u81ea\u8eab\u306e\u307f<\/td>\n<td>\u5168\u885b\u661f\u3076\u3093<\/td>\n<\/tr>\n<tr>\n<td>\u53d6\u5f97\u6642\u9593<\/td>\n<td>\u7d0430\u79d2\uff08\u540c\u671f\u5f85\u3061\u8fbc\u307f\uff09<\/td>\n<td>12.5\u5206<\/td>\n<\/tr>\n<tr>\n<td>\u66f4\u65b0\u9593\u9694<\/td>\n<td>\u901a\u5e382\u6642\u9593\u3054\u3068\u306b\u30a2\u30c3\u30d7\u30ed\u30fc\u30c9<\/td>\n<td>\u901a\u5e386\u65e5\u4ee5\u5185\u306b\u66f4\u65b0<\/td>\n<\/tr>\n<tr>\n<td>\u6709\u52b9\u306a\u9577\u3055<\/td>\n<td>\u6570\u6642\u9593<\/td>\n<td>\u6570\u9031\u9593\u301c\u6570\u304b\u6708\uff08\u7cbe\u5ea6\u306f\u843d\u3061\u308b\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u3064\u307e\u308a\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u306f\u300c\u7a7a\u306e\u3069\u306e\u3042\u305f\u308a\u306b\u8ab0\u304c\u3044\u308b\u304b\u300d\u306e\u898b\u5f53\u3092\u3064\u3051\u308b\u305f\u3081\u306e\u5730\u56f3\u3001\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u306f\u300c\u305d\u306e1\u6a5f\u306e\u73fe\u5728\u4f4d\u7f6e\u300d\u306e\u7cbe\u5bc6\u5024\u3067\u3059\u3002<strong>\u6e2c\u4f4d\u306b\u4f7f\u3046\u306e\u306f\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u306e\u307b\u3046\u3067\u3001\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u304c\u7121\u304f\u3066\u3082\u6e2c\u308c\u307e\u3059<\/strong>\u2014\u2014\u305f\u3060\u3057\u885b\u661f\u3092\u63a2\u3059\u6642\u9593\u304c\u4f38\u3073\u307e\u3059\u3002<\/p>\n<h2 id=\"_3\">\u30b3\u30fc\u30eb\u30c9\u30fb\u30a6\u30a9\u30fc\u30e0\u30fb\u30db\u30c3\u30c8\u306f\u4f55\u304c\u9055\u3046\u306e\u304b<\/h2>\n<table>\n<thead>\n<tr>\n<th>\u8d77\u52d5\u306e\u7a2e\u985e<\/th>\n<th>\u53d7\u4fe1\u6a5f\u304c\u6301\u3063\u3066\u3044\u308b\u3082\u306e<\/th>\n<th>\u4f53\u611f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30db\u30c3\u30c8\u30b9\u30bf\u30fc\u30c8<\/td>\n<td>\u6709\u52b9\u306a\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u30fb\u6642\u523b\u30fb\u304a\u304a\u3088\u305d\u306e\u4f4d\u7f6e<\/td>\n<td>\u307b\u307c\u5f85\u305f\u305a\u306b\u6e2c\u4f4d\u958b\u59cb<\/td>\n<\/tr>\n<tr>\n<td>\u30a6\u30a9\u30fc\u30e0\u30b9\u30bf\u30fc\u30c8<\/td>\n<td>\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u30fb\u6642\u523b\u30fb\u4f4d\u7f6e\u306f\u3042\u308b\u304c\u3001\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u304c\u53e4\u3044<\/td>\n<td>\u6570\u5341\u79d2\uff08\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u306e\u8aad\u307f\u76f4\u3057\u5f85\u3061\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u30b3\u30fc\u30eb\u30c9\u30b9\u30bf\u30fc\u30c8<\/td>\n<td>\u307b\u307c\u4f55\u3082\u306a\u3044<\/td>\n<td>\u6570\u5341\u79d2\u301c\u6570\u5206\uff08\u53d7\u4fe1\u74b0\u5883\u3068\u6a5f\u7a2e\u306b\u3088\u308b\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u73fe\u5834\u3067\u610f\u5916\u306b\u8d77\u304d\u308b\u306e\u304c<strong>\u300c\u30a6\u30a9\u30fc\u30e0\u306e\u3064\u3082\u308a\u304c\u30b3\u30fc\u30eb\u30c9\u3060\u3063\u305f\u300d<\/strong>\u3067\u3059\u3002\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u306f\u901a\u5e382\u6642\u9593\u3054\u3068\u306b\u66f4\u65b0\u3055\u308c\u3001\u653e\u9001\u3055\u308c\u3066\u3044\u308b\u5024\u304c\u4f7f\u3048\u308b\u306e\u306f\u6570\u6642\u9593\u3067\u3059\u3002\u5348\u524d\u306e\u89b3\u6e2c\u3092\u7d42\u3048\u3066\u53d7\u4fe1\u6a5f\u306e\u96fb\u6e90\u3092\u843d\u3068\u3057\u3001\u663c\u4f11\u307f\u3092\u631f\u3093\u3067\u5348\u5f8c\u306b\u5165\u308c\u76f4\u3059\u3068\u3001\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u306f\u3082\u3046\u53e4\u304f\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u5185\u8535\u96fb\u6c60\u304c\u5207\u308c\u3066\u3044\u305f\u308a\u9577\u671f\u4fdd\u7ba1\u3057\u3066\u3044\u305f\u308a\u3059\u308b\u3068\u3001\u6642\u523b\u3068\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u307e\u3067\u5931\u308f\u308c\u3066\u30b3\u30fc\u30eb\u30c9\u30b9\u30bf\u30fc\u30c8\u306b\u843d\u3061\u307e\u3059\u3002<\/p>\n<h2 id=\"rtkfix\">RTK\u306e\u300cFix\u5f85\u3061\u300d\u306f\u3053\u308c\u3068\u306f\u5225\u306e\u6642\u8a08<\/h2>\n<p>\u3053\u3053\u307e\u3067\u306f<strong>\u5358\u72ec\u6e2c\u4f4d\u304c\u59cb\u307e\u308b\u307e\u3067<\/strong>\u306e\u8a71\u3067\u3059\u3002RTK\u3067Fix\u89e3\u304c\u51fa\u308b\u307e\u3067\u306b\u306f\u3001\u305d\u306e\u5148\u306b\u6574\u6570\u5024\u30d0\u30a4\u30a2\u30b9\u306e\u6c7a\u5b9a\u3068\u3044\u3046\u5225\u306e\u5de5\u7a0b\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p><img decoding=\"async\" style=\"width:80%;max-width:100%;height:auto;display:block;margin:0 auto;\" src=\"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/09\/gde-fig-rtk-base-rover.jpeg\" alt=\"\u540c\u3058\u885b\u661f\u3092\u898b\u308b\u57fa\u6e96\u5c40\u3068\u79fb\u52d5\u5c40\u3001\u305d\u306e\u3042\u3044\u3060\u306e\u57fa\u7dda\u9577\"><\/p>\n<p>\u73fe\u5834\u3067\u300c\u306a\u304b\u306a\u304bFix\u3057\u306a\u3044\u300d\u3068\u611f\u3058\u305f\u3068\u304d\u3001\u539f\u56e0\u306f\u6b21\u306e\u3069\u3053\u304b\u306b\u3042\u308a\u307e\u3059\u3002\u5207\u308a\u5206\u3051\u306e\u9806\u756a\u3092\u9593\u9055\u3048\u308b\u3068\u3001\u95a2\u4fc2\u306a\u3044\u8a2d\u5b9a\u3092\u3044\u3058\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li><strong>\u305d\u3082\u305d\u3082\u5358\u72ec\u6e2c\u4f4d\u304c\u59cb\u307e\u3063\u3066\u3044\u306a\u3044<\/strong>\uff08\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u53d6\u5f97\u5f85\u3061\u3002\u53d7\u4fe1\u6a5f\u306e\u885b\u661f\u6570\u8868\u793a\u304c\u30bc\u30ed\u304b\u6975\u7aef\u306b\u5c11\u306a\u3044\uff09<\/li>\n<li>\u5358\u72ec\u6e2c\u4f4d\u306f\u3057\u3066\u3044\u308b\u304c<strong>\u88dc\u6b63\u30c7\u30fc\u30bf\u304c\u5c4a\u3044\u3066\u3044\u306a\u3044<\/strong>\uff08Ntrip\u63a5\u7d9a\u30fb\u901a\u4fe1\u570f\u306e\u554f\u984c\uff09<\/li>\n<li>\u88dc\u6b63\u306f\u6765\u3066\u3044\u308b\u304c<strong>Fix\u3057\u306a\u3044<\/strong>\uff08\u885b\u661f\u914d\u7f6e\u30fb\u30de\u30eb\u30c1\u30d1\u30b9\u30fb\u57fa\u7dda\u9577\u30fb\u6574\u6570\u5024\u30d0\u30a4\u30a2\u30b9\u306e\u6c7a\u5b9a\u5931\u6557\uff09<\/li>\n<\/ol>\n<p>1\u30683\u306f\u898b\u305f\u76ee\u304c\u4f3c\u3066\u3044\u307e\u3059\u304c\u3001\u5bfe\u51e6\u306f\u307e\u3063\u305f\u304f\u9055\u3044\u307e\u3059\u3002\u8d77\u52d5\u76f4\u5f8c\u306e\u6570\u5341\u79d2\u306f\u3001\u305d\u3082\u305d\u30821\u306e\u6bb5\u968e\u3060\u3068\u8003\u3048\u3066\u5f85\u3064\u306e\u304c\u6b63\u89e3\u3067\u3059\u3002<\/p>\n<h2 id=\"5\">\u73fe\u5834\u3067\u5f85\u3061\u6642\u9593\u3092\u77ed\u304f\u3059\u308b5\u3064\u306e\u624b<\/h2>\n<p><strong>1. \u53d7\u4fe1\u6a5f\u306e\u96fb\u6e90\u3092\u5148\u306b\u5165\u308c\u308b\u3002<\/strong> \u6a5f\u6750\u3092\u4e09\u811a\u306b\u636e\u3048\u3001\u30a2\u30f3\u30c6\u30ca\u3092\u7acb\u3066\u305f\u76f4\u5f8c\u306b\u53d7\u4fe1\u6a5f\u3078\u901a\u96fb\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u30b1\u30fc\u30d6\u30eb\u914d\u7dda\u30fb\u30bf\u30d6\u30ec\u30c3\u30c8\u5074\u306e\u30a2\u30d7\u30ea\u8d77\u52d5\u30fb\u57fa\u6e96\u5c40\u306e\u8a2d\u5b9a\u3092\u3057\u3066\u3044\u308b\u3042\u3044\u3060\u306b\u3001\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u306e\u8aad\u307f\u53d6\u308a\u304c\u9032\u307f\u307e\u3059\u3002<strong>\u4eba\u304c\u6e96\u5099\u3057\u3066\u3044\u308b\u6642\u9593\u3092\u3001\u53d7\u4fe1\u6a5f\u306e\u8aad\u307f\u53d6\u308a\u6642\u9593\u306b\u91cd\u306d\u308b<\/strong>\u306e\u304c\u3044\u3061\u3070\u3093\u52b9\u304d\u307e\u3059\u3002<\/p>\n<p><strong>2. \u663c\u4f11\u307f\u3084\u79fb\u52d5\u306e\u3042\u3044\u3060\u306f\u96fb\u6e90\u3092\u843d\u3068\u3055\u306a\u3044\u3002<\/strong> \u96fb\u6e90\u3092\u5207\u308b\u305f\u3073\u306b\u30a8\u30d5\u30a7\u30e1\u30ea\u30b9\u304c\u5931\u308f\u308c\u3001\u518d\u53d6\u5f97\u3067\u6570\u5341\u79d2\u304c\u7a4d\u307f\u4e0a\u304c\u308a\u307e\u3059\u3002\u30d0\u30c3\u30c6\u30ea\u30fc\u306b\u4f59\u88d5\u304c\u3042\u308b\u306a\u3089\u901a\u96fb\u3057\u305f\u307e\u307e\u306e\u307b\u3046\u304c\u901f\u304f\u3001\u7d50\u679c\u7684\u306b\u96fb\u6c60\u3082\u7a3c\u3052\u307e\u3059\uff08\u8d77\u52d5\u76f4\u5f8c\u306f\u6355\u6349\u306e\u305f\u3081\u306b\u6d88\u8cbb\u304c\u5927\u304d\u3044\u305f\u3081\uff09\u3002<\/p>\n<p><strong>3. \u6700\u521d\u306e1\u56de\u306f\u7a7a\u306e\u958b\u3051\u305f\u5834\u6240\u3067\u3002<\/strong> \u6a39\u51a0\u306e\u4e0b\u3084\u5efa\u7269\u969b\u3067\u30b3\u30fc\u30eb\u30c9\u30b9\u30bf\u30fc\u30c8\u3059\u308b\u3068\u3001\u4fe1\u53f7\u304c\u5f31\u304f\u3066\u30d3\u30c3\u30c8\u3092\u8aad\u307f\u843d\u3068\u3057\u3001\u30d5\u30ec\u30fc\u30e0\u3092\u53d6\u308a\u76f4\u3059\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<strong>\u958b\u3051\u305f\u5834\u6240\u3067\u521d\u671f\u5316\u3092\u6e08\u307e\u305b\u3066\u304b\u3089\u3001\u6e2c\u70b9\u3078\u79fb\u52d5\u3059\u308b<\/strong>\u307b\u3046\u304c\u65e9\u3044\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u3002<\/p>\n<p><strong>4. \u9577\u671f\u4fdd\u7ba1\u5f8c\u306f\u3001\u610f\u56f3\u7684\u306b\u9577\u3081\u306e\u521d\u671f\u5316\u6642\u9593\u3092\u53d6\u308b\u3002<\/strong> \u5185\u8535\u96fb\u6c60\u304c\u5207\u308c\u3066\u3044\u305f\u53d7\u4fe1\u6a5f\u306f\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u304b\u3089\u8aad\u307f\u76f4\u3057\u307e\u3059\u3002\u73fe\u5834\u306e\u671d\u306b\u3044\u304d\u306a\u308a\u3053\u308c\u3092\u5f15\u304f\u3068\u300112.5\u5206\u304c\u4e38\u3054\u3068\u4e57\u308a\u307e\u3059\u3002\u524d\u65e5\u306b\u4e8b\u52d9\u6240\u3067\u4e00\u5ea6\u901a\u96fb\u3057\u3066\u304a\u3051\u3070\u3001\u305d\u306e\u6642\u9593\u3092\u73fe\u5834\u304b\u3089\u5207\u308a\u96e2\u305b\u307e\u3059\u3002<\/p>\n<p><strong>5. \u4ef0\u89d2\u30de\u30b9\u30af\u3092\u6700\u521d\u304b\u3089\u4e0a\u3052\u3059\u304e\u306a\u3044\u3002<\/strong> \u4f4e\u3044\u885b\u661f\u3092\u5207\u308b\u3068\u6355\u6349\u5019\u88dc\u304c\u6e1b\u308a\u3001\u521d\u671f\u5316\u304c\u9045\u304f\u306a\u308a\u307e\u3059\u3002\u521d\u671f\u5316\u304c\u6e08\u3093\u3067\u304b\u3089\u904b\u7528\u5024\u306b\u623b\u3059\u3001\u3068\u3044\u3046\u9806\u756a\u304c\u4f7f\u3048\u307e\u3059\u3002<\/p>\n<p>\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u304c\u6570\u79d2\u3067\u6e2c\u4f4d\u3067\u304d\u308b\u306e\u306f\u3001\u3053\u306e\u8aad\u307f\u53d6\u308a\u3092\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u7d4c\u7531\u3067\u5148\u56de\u308a\u3057\u3066\u53d7\u3051\u53d6\u3063\u3066\u3044\u308b\uff08A-GNSS\uff09\u304b\u3089\u3067\u3001\u3057\u304f\u307f\u304c\u9055\u3044\u307e\u3059\u3002\u901a\u4fe1\u3092\u6301\u305f\u306a\u3044\u6e2c\u91cf\u7528\u53d7\u4fe1\u6a5f\u3067\u306f\u3001\u7a7a\u304b\u3089\u306e50bps\u3092\u5f85\u3064\u306e\u304c\u57fa\u672c\u3067\u3059\u3002<\/p>\n<h3 id=\"_4\">\u51fa\u5178<\/h3>\n<ul>\n<li>GPS Navigation Message \u2014 ESA Navipedia: https:\/\/gssc.esa.int\/navipedia\/index.php\/GPS_Navigation_Message<\/li>\n<li>IS-GPS-200\uff08GPS \u6c11\u9593\u5411\u3051\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u4ed5\u69d8\u66f8\uff09 \u2014 GPS.gov: https:\/\/www.gps.gov\/technical\/icwg\/<\/li>\n<li>GPS \u306e\u6982\u8981 \u2014 \u5185\u95a3\u5e9c \u5b87\u5b99\u958b\u767a\u6226\u7565\u63a8\u9032\u4e8b\u52d9\u5c40 \u307f\u3061\u3073\u304d\uff08QZSS\uff09: https:\/\/qzss.go.jp\/overview\/services\/index.html<\/li>\n<li>\u96fb\u5b50\u57fa\u6e96\u70b9\u30c7\u30fc\u30bf\u63d0\u4f9b\u30b5\u30fc\u30d3\u30b9 \u2014 \u56fd\u571f\u5730\u7406\u9662: https:\/\/www.gsi.go.jp\/denshi\/<\/li>\n<\/ul>\n<hr \/>\n<h2 id=\"_5\">\u6b21\u306b\u78ba\u8a8d\u3059\u308b<\/h2>\n<ul>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/09\/02\/elevation-mask-angle-gnss-rtk-field\/\">\u4ef0\u89d2\u30de\u30b9\u30af\u89d2\u306f\u3044\u304f\u3064\u306b\u3059\u3079\u304d\u304b<\/a> \u2014 \u672c\u8a18\u4e8b5\u756a\u76ee\u306e\u624b\u3067\u89e6\u308c\u305f\u300c\u6700\u521d\u306f\u4e0b\u3052\u308b\uff0f\u904b\u7528\u4e2d\u306f\u4e0a\u3052\u308b\u300d\u306e\u5224\u65ad\u6750\u6599\u306b\u306a\u308a\u307e\u3059<\/li>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/07\/11\/rtk-integer-ambiguity-fix-explained\/\">RTK\u306e\u6574\u6570\u5024\u30d0\u30a4\u30a2\u30b9\u306f\u3069\u3046\u6c7a\u307e\u308b\u306e\u304b<\/a> \u2014 \u5358\u72ec\u6e2c\u4f4d\u304c\u59cb\u307e\u3063\u305f\u3042\u3068\u3001Fix\u89e3\u306b\u81f3\u308b\u307e\u3067\u306e\u3082\u3046\u4e00\u3064\u306e\u5f85\u3061\u6642\u9593\u306e\u4e2d\u8eab\u3067\u3059<\/li>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/08\/12\/ntrip-connection-loss-rtk-field\/\">Ntrip\u63a5\u7d9a\u304c\u5207\u308c\u305f\u3068\u304d\u3001\u73fe\u5834\u3067\u4f55\u304c\u8d77\u304d\u308b\u304b<\/a> \u2014 \u5207\u308a\u5206\u3051\u8868\u306e2\u756a\u76ee\u300c\u88dc\u6b63\u304c\u5c4a\u3044\u3066\u3044\u306a\u3044\u300d\u5074\u306e\u75c7\u72b6\u3068\u5bfe\u51e6\u3067\u3059<\/li>\n<li><a href=\"https:\/\/y42u.net\/tec001\/2026\/08\/24\/multi-gnss-constellations-rtk-field\/\">\u30de\u30eb\u30c1GNSS\u306f\u4f55\u6a5f\u307e\u3067\u4f7f\u3048\u308b\u306e\u304b<\/a> \u2014 \u6355\u6349\u3067\u304d\u308b\u885b\u661f\u304c\u5897\u3048\u308b\u3068\u521d\u671f\u5316\u304c\u3069\u3046\u5909\u308f\u308b\u304b\u306e\u524d\u63d0\u304c\u5206\u304b\u308a\u307e\u3059<\/li>\n<li><a href=\"https:\/\/gmp.y42u.net\/2026\/06\/30\/gnss-positioning-principle-visual\/\">GNSS\u306f\u3069\u3046\u3084\u3063\u3066\u4f4d\u7f6e\u3092\u6c7a\u3081\u3066\u3044\u308b\u306e\u304b\uff08GeoPrism JP\uff09<\/a> \u2014 \u300c\u885b\u661f\u306e\u4f4d\u7f6e\u304c\u5206\u304b\u3089\u306a\u3044\u3068\u6e2c\u4f4d\u5f0f\u304c\u89e3\u3051\u306a\u3044\u300d\u3068\u3053\u308d\u3092\u3001\u56f3\u3067\u78ba\u304b\u3081\u3089\u308c\u307e\u3059<\/li>\n<li>\u66f8\u7c4d\u3067\u307e\u3068\u3081\u3066\u5b66\u3076: <a href=\"https:\/\/www.amazon.co.jp\/dp\/B0HF4SJC1L\">\u300e\u65e5\u672c\u306e\u6e2c\u5730\u7cfbQ&amp;A\u300f\u7b2c10\u7ae0\u300cGPS\u3068\u307f\u3061\u3073\u304d\u306e\u3057\u304f\u307f\u300d<\/a>\uff08Kindle Unlimited\u5bfe\u5fdc\uff09<\/li>\n<\/ul>\n<hr \/>\n<blockquote><p>\n<strong>\u958b\u767a\u8005\u3088\u308a<\/strong>: \u30a2\u30d7\u30ea\u30fbKindle\u672c\u30fb\u516c\u958b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u4e00\u89a7\u306f <a href=\"https:\/\/github.com\/amru195704\">GitHub: amru195704<\/a> \u306b\u307e\u3068\u3081\u3066\u3044\u307e\u3059\u3002\n<\/p><\/blockquote>\n<hr \/>\n<blockquote><p>\n<strong>\u304a\u9858\u3044<\/strong><br \/>\n\u672c\u8a18\u4e8b\u306e\u60c5\u5831\u306f\u53c2\u8003\u76ee\u7684\u3067\u63b2\u8f09\u3057\u3066\u304a\u308a\u3001\u6b63\u78ba\u6027\u30fb\u5b8c\u5168\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u8aa4\u8a18\u30fb\u4e0d\u6b63\u78ba\u306a\u60c5\u5831\u304c\u3054\u3056\u3044\u307e\u3057\u305f\u3089\u3001\u30b3\u30e1\u30f3\u30c8\u6b04\u3088\u308a\u3054\u6307\u6458\u3044\u305f\u3060\u3051\u308c\u3070\u3001\u78ba\u8a8d\u306e\u3046\u3048\u4fee\u6b63\u3044\u305f\u3057\u307e\u3059\u3002\n<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>GNSS\u53d7\u4fe1\u6a5f\u306f\u96fb\u6e90\u3092\u5165\u308c\u3066\u3059\u3050\u6e2c\u308c\u306a\u3044\u306e\u306f\u306a\u305c\uff1f \u2014 12.5\u5206\u304b\u304b\u308b\u30a2\u30eb\u30de\u30ca\u30c3\u30af\u3068\u3001\u73fe\u5834\u3067\u5f85\u3061\u6642\u9593\u3092\u77ed\u304f\u3059\u308b\u9806\u756a \u885b\u661f\u304c\u4f4d\u7f6e\u60c5\u5831\u3092\u6bce\u79d2\u3070\u3089\u307e\u3044\u3066\u3044\u308b\u306e\u306b\u5f85\u305f\u3055\u308c\u308b\u306e\u306f\u3001\u53d7\u4fe1\u6a5f\u304c\u300c\u885b\u661f\u304c\u3044\u307e\u3069\u3053\u306b\u3044\u308b\u304b\u300d\u3092\u885b\u661f\u81ea\u8eab\u304b\u3089 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":4038,"comment_status":"open","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"sns_share_botton_hide":"","vkExUnit_sns_title":"","_vk_print_noindex":"","sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[1],"tags":[17,16,14,571,573,572,570,575,373,574],"class_list":["post-4039","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","tag-geodiveexa","tag-gnss","tag-rtk","tag-ttff","tag-573","tag-572","tag-570","tag-575","tag-373","tag-574"],"veu_head_title_object":{"title":"","add_site_title":""},"jetpack_publicize_connections":[],"jetpack-related-posts":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/y42u.net\/tec001\/wp-content\/uploads\/2026\/09\/gde-gnss-cold-start-ttff-ephemeris-almanac-field.jpeg","_links":{"self":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/4039","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/comments?post=4039"}],"version-history":[{"count":1,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/4039\/revisions"}],"predecessor-version":[{"id":4082,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/posts\/4039\/revisions\/4082"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/media\/4038"}],"wp:attachment":[{"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/media?parent=4039"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/categories?post=4039"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/y42u.net\/tec001\/wp-json\/wp\/v2\/tags?post=4039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}