{"id":1522,"date":"2026-10-27T06:00:00","date_gmt":"2026-10-26T21:00:00","guid":{"rendered":"https:\/\/quantumsea.net\/?p=1522"},"modified":"2026-10-24T06:14:37","modified_gmt":"2026-10-23T21:14:37","slug":"qs-allan-deviation-drift-20261024","status":"publish","type":"post","link":"https:\/\/quantumsea.net\/?p=1522","title":{"rendered":"\u30a2\u30e9\u30f3\u504f\u5dee\u3001\u9577\u304f\u5e73\u5747\u3059\u308c\u3070\u5468\u6ce2\u6570\u306f\u5b89\u5b9a\u3059\u308b\u306e\u304b"},"content":{"rendered":"<p>\u5468\u6ce2\u6570\u3092\u4f55\u5ea6\u3082\u6e2c\u3063\u3066\u5e73\u5747\u3059\u308c\u3070\u3001\u7d30\u304b\u306a\u63fa\u3089\u304e\u306f\u5c0f\u3055\u304f\u306a\u308b\u3002\u305d\u3046\u8003\u3048\u3066\u6e2c\u5b9a\u6642\u9593\u3092\u5ef6\u3070\u3057\u305f\u306e\u306b\u3001\u96a3\u306e\u6e2c\u5b9a\u7d50\u679c\u3068\u306e\u5dee\u306f\u304b\u3048\u3063\u3066\u5927\u304d\u304f\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u5e73\u5747\u3057\u3066\u3044\u308b\u9593\u306b\u3001\u767a\u632f\u5668\u306e\u5468\u6ce2\u6570\u305d\u306e\u3082\u306e\u304c\u3086\u3063\u304f\u308a\u52d5\u3044\u3066\u3044\u308b\u5834\u5408\u3067\u3059\u3002<\/p>\n<p>\u3053\u306e\u6642\u9593\u306e\u9055\u3044\u3092\u542b\u3081\u3066\u5468\u6ce2\u6570\u306e\u5b89\u5b9a\u5ea6\u3092\u898b\u308b\u6307\u6a19\u304c\u3001\u30a2\u30e9\u30f3\u504f\u5dee\uff08Allan deviation\uff09\u3067\u3059\u3002\u300c\u3069\u308c\u304f\u3089\u3044\u9577\u304f\u5e73\u5747\u3057\u305f\u5024\u306a\u306e\u304b\u300d\u3092\u6dfb\u3048\u3066\u6bd4\u8f03\u3059\u308b\u306e\u3067\u3001\u77ed\u6642\u9593\u306e\u63fa\u3089\u304e\u3068\u9577\u6642\u9593\u306e\u5909\u5316\u3092\u5206\u3051\u3066\u8003\u3048\u3089\u308c\u307e\u3059\u3002[1][2]<\/p>\n<section class=\"influvetor-quick-summary\">\n<p><strong>\u7c21\u5358\u306b\u307e\u3068\u3081\u308b\u3068\uff1f<\/strong><\/p>\n<ul>\n<li>\u30a2\u30e9\u30f3\u504f\u5dee\u306f\u3001\u540c\u3058\u9577\u3055\u306e\u6642\u9593\u3067\u5e73\u5747\u3057\u305f\u5468\u6ce2\u6570\u3092\u3001\u96a3\u308a\u5408\u3046\u533a\u9593\u3069\u3046\u3057\u3067\u6bd4\u3079\u308b\u6307\u6a19\u3067\u3059\u3002\u5e73\u5747\u6642\u9593\u3082\u4e00\u7dd2\u306b\u793a\u3057\u307e\u3059\u3002<\/li>\n<li>\u72ec\u7acb\u3057\u305f\u767d\u8272\u5468\u6ce2\u6570\u96d1\u97f3\u306f\u9577\u304f\u5e73\u5747\u3059\u308b\u3068\u5c0f\u3055\u304f\u306a\u308a\u307e\u3059\u304c\u3001\u7dda\u5f62\u30c9\u30ea\u30d5\u30c8\u306f\u96a3\u63a5\u533a\u9593\u306e\u5dee\u3092\u5927\u304d\u304f\u3057\u307e\u3059\u3002\u9577\u3044\u5e73\u5747\u304c\u3044\u3064\u3082\u6709\u5229\u3068\u306f\u9650\u308a\u307e\u305b\u3093\u3002<\/li>\n<li>\u5c0f\u3055\u306a\u30a2\u30e9\u30f3\u504f\u5dee\u306f\u3001\u57fa\u6e96\u306e\u5468\u6ce2\u6570\u306b\u6b63\u3057\u304f\u5408\u3063\u3066\u3044\u308b\u4fdd\u8a3c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u6e2c\u5b9a\u5668\u3001\u57fa\u6e96\u4fe1\u53f7\u3001\u6b20\u6e2c\u3001\u30c9\u30ea\u30d5\u30c8\u306e\u6271\u3044\u3082\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/section>\n<h2>\u5168\u4f53\u306e\u5e73\u5747\u304b\u3089\u3067\u306f\u306a\u304f\u3001\u96a3\u306e\u5e73\u5747\u3068\u306e\u5dee\u3092\u898b\u308b<\/h2>\n<p>\u307e\u305a\u3001\u5468\u6ce2\u6570\u306e\u305a\u308c\u3092\u57fa\u6e96\u5468\u6ce2\u6570\u3067\u5272\u3063\u305f\u300c\u5206\u6570\u5468\u6ce2\u6570\u300dy \u3092\u4f7f\u3044\u307e\u3059\u3002\u57fa\u6e96\u3092 f\u2080\u3001\u6e2c\u5b9a\u5024\u3092 f \u3068\u3059\u308b\u3068\u3001y = (f \u2212 f\u2080)\/f\u2080 \u3067\u3059\u3002\u4f8b\u3048\u30701 GHz\u306b\u5bfe\u3059\u308b1 Hz\u306e\u305a\u308c\u306f10\u5104\u5206\u306e1\u3001\u3064\u307e\u308a y = 10<sup>\u22129<\/sup>\u306b\u306a\u308a\u307e\u3059\u3002\u5358\u4f4d\u304c\u306a\u3044\u305f\u3081\u3001\u57fa\u6e96\u5468\u6ce2\u6570\u304c\u9055\u3046\u4fe1\u53f7\u3067\u3082\u76f8\u5bfe\u7684\u306a\u63fa\u3089\u304e\u3092\u8868\u305b\u307e\u3059\u3002<\/p>\n<p>\u5e73\u5747\u3059\u308b\u533a\u9593\u306e\u9577\u3055\u3092 \u03c4\uff08\u30bf\u30a6\uff09\u3068\u3057\u307e\u3059\u3002\u6700\u521d\u306e\u03c4\u79d2\u306e\u5e73\u5747\u3001\u6b21\u306e\u03c4\u79d2\u306e\u5e73\u5747\u3001\u305d\u306e\u6b21\u306e\u5e73\u5747\u3001\u3068\u4e26\u3079\u3001\u96a3\u3069\u3046\u3057\u306e\u5dee\u3092\u53d6\u308a\u307e\u3059\u3002\u305d\u306e\u5dee\u3092\u4e8c\u4e57\u3057\u3066\u5e73\u5747\u3057\u30012\u3067\u5272\u3063\u3066\u5e73\u65b9\u6839\u3092\u53d6\u3063\u305f\u5024\u304c\u3001\u57fa\u672c\u5f62\u306e\u30a2\u30e9\u30f3\u504f\u5dee\u3067\u3059\u3002[1]<\/p>\n<p>\u6b20\u6e2c\u304c\u306a\u304f\u3001\u91cd\u306a\u3089\u306a\u3044\u7b49\u3057\u3044\u9577\u3055\u306e\u533a\u9593\u304cM\u500b\u3042\u308b\u5834\u5408\u306f\u3001\u03c3<sub>y<\/sub>(\u03c4) = \u221a{\u03a3(\u0233<sub>k+1<\/sub> \u2212 \u0233<sub>k<\/sub>)\u00b2 \/ [2(M \u2212 1)]} \u3068\u66f8\u3051\u307e\u3059\u3002\u03a3\u306f k = 1 \u304b\u3089 M \u2212 1 \u307e\u3067\u306e\u548c\u3001\u0233\u306f\u5404\u533a\u9593\u306e\u5206\u6570\u5468\u6ce2\u6570\u306e\u5e73\u5747\u3067\u3059\u3002\u4e8c\u4e57\u3057\u3066\u304b\u3089\u5e73\u5747\u3059\u308b\u306e\u3067\u3001\u6b63\u8ca0\u306e\u5dee\u304c\u6253\u3061\u6d88\u3057\u5408\u3046\u3053\u3068\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u5b9f\u969b\u306e\u89e3\u6790\u3067\u306f\u3001\u7a93\u3092\u7d30\u304b\u304f\u305a\u3089\u3057\u3066\u91cd\u306a\u308a\u5408\u3046\u533a\u9593\u3082\u5229\u7528\u3059\u308b\u300c\u30aa\u30fc\u30d0\u30fc\u30e9\u30c3\u30d7\u30fb\u30a2\u30e9\u30f3\u504f\u5dee\u300d\u304c\u5e83\u304f\u4f7f\u308f\u308c\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u4ed5\u7d44\u307f\u3092\u8ffd\u3044\u3084\u3059\u3044\u3088\u3046\u3001\u91cd\u306a\u3089\u306a\u3044\u533a\u9593\u3092\u4f7f\u3044\u307e\u3059\u3002\u624b\u6cd5\u304c\u9055\u3046\u7d50\u679c\u3092\u6bd4\u3079\u308b\u969b\u306f\u3001\u540d\u79f0\u3060\u3051\u3067\u306a\u304f\u63a8\u5b9a\u65b9\u6cd5\u3082\u305d\u308d\u3048\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u767d\u8272\u96d1\u97f3\u306f\u5e73\u5747\u3067\u6e1b\u308b\u304c\u3001\u30c9\u30ea\u30d5\u30c8\u306f\u5897\u3048\u308b<\/h2>\n<p>1\u79d2\u3054\u3068\u306e\u5468\u6ce2\u6570\u306e\u63fa\u3089\u304e\u304c\u4e92\u3044\u306b\u72ec\u7acb\u3067\u3001\u5e73\u5747\u30bc\u30ed\u3001\u540c\u3058\u5206\u6563\u3092\u6301\u3064\u3068\u4eee\u5b9a\u3057\u307e\u3059\u3002\u3053\u306e\u767d\u8272\u5468\u6ce2\u6570\u96d1\u97f3\u3067\u306f\u3001m\u500b\u3092\u5e73\u5747\u3057\u305f\u5024\u306e\u6a19\u6e96\u504f\u5dee\u306f1\/\u221am\u306b\u306a\u308a\u307e\u3059\u3002\u5e73\u5747\u6642\u9593\u30924\u500d\u306b\u3059\u308b\u3068\u3001\u30a2\u30e9\u30f3\u504f\u5dee\u3082\u534a\u5206\u306b\u306a\u308b\u95a2\u4fc2\u3067\u3059\u3002\u96a3\u63a5\u3059\u308b\u533a\u9593\u306e\u5e73\u5747\u304c\u4e92\u3044\u306b\u72ec\u7acb\u306a\u306e\u3067\u3001\u305d\u308c\u305e\u308c\u306e\u5206\u6563\u3092\u8db3\u3057\u305f\u5f8c\u306b2\u3067\u5272\u308b\u3053\u3068\u304c\u3001\u3053\u306e\u95a2\u4fc2\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3001\u5206\u6570\u5468\u6ce2\u6570\u304c\u4e00\u5b9a\u306e\u901f\u3055 d \u3067\u5909\u308f\u308b\u7dda\u5f62\u30c9\u30ea\u30d5\u30c8\u3092\u8003\u3048\u308b\u3068\u3001\u96a3\u306e\u533a\u9593\u306e\u5e73\u5747\u3068\u306e\u5dee\u306f d\u03c4 \u3067\u3059\u3002\u5e73\u5747\u6642\u9593\u304c\u9577\u3044\u307b\u3069\u3001\u4e8c\u3064\u306e\u533a\u9593\u306e\u4e2d\u5fc3\u6642\u523b\u304c\u96e2\u308c\u3001\u305d\u306e\u9593\u306b\u5468\u6ce2\u6570\u304c\u52d5\u304d\u307e\u3059\u3002\u30c9\u30ea\u30d5\u30c8\u3060\u3051\u306b\u3088\u308b\u30a2\u30e9\u30f3\u504f\u5dee\u306f |d|\u03c4\/\u221a2 \u3068\u306a\u308a\u3001\u5e73\u5747\u6642\u9593\u306b\u6bd4\u4f8b\u3057\u3066\u5927\u304d\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<p>\u77ed\u3044\u6642\u9593\u306e\u3070\u3089\u3064\u304d\u3092\u6e1b\u3089\u3059\u3053\u3068\u3068\u3001\u6642\u9593\u3068\u3068\u3082\u306b\u52d5\u304f\u5468\u6ce2\u6570\u3092\u8ffd\u3046\u3053\u3068\u306f\u3001\u540c\u3058\u64cd\u4f5c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u3086\u3063\u304f\u308a\u3057\u305f\u5909\u5316\u3092\u542b\u3080\u4fe1\u53f7\u3067\u306f\u3001\u9577\u3044\u5e73\u5747\u304c\u5909\u5316\u3092\u6d88\u3057\u3066\u304f\u308c\u308b\u3068\u306f\u9650\u3089\u306a\u3044\u306e\u3067\u3059\u3002<\/p>\n<h2>16\u79d2\u3088\u308a64\u79d2\u306e\u307b\u3046\u304c\u5927\u304d\u304f\u306a\u308b\u4f8b<\/h2>\n<p>\u5177\u4f53\u7684\u306b\u30011\u79d2\u5e73\u5747\u306e\u767d\u8272\u5468\u6ce2\u6570\u96d1\u97f3\u306e\u6a19\u6e96\u504f\u5dee\u3092 \u03c3\u2080 = 10<sup>\u22129<\/sup>\u3001\u7dda\u5f62\u30c9\u30ea\u30d5\u30c8\u3092 d = 2 \u00d7 10<sup>\u221211<\/sup>\/\u79d2\u3068\u3059\u308b\u72ec\u81ea\u306e\u7406\u60f3\u30e2\u30c7\u30eb\u3092\u8a08\u7b97\u3057\u307e\u3059\u30021 GHz\u306e\u4fe1\u53f7\u306a\u3089\u3001\u96d1\u97f3\u306e\u6a19\u6e96\u504f\u5dee\u304c1 Hz\u3001\u30c9\u30ea\u30d5\u30c8\u304c\u6bce\u79d20.02 Hz\u306b\u76f8\u5f53\u3057\u307e\u3059\u3002\u5b9f\u6a5f\u306e\u6e2c\u5b9a\u7d50\u679c\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u03c4 = m \u00d7 1\u79d2\u3068\u3057\u3066\u3001\u4e8c\u3064\u306e\u5bc4\u4e0e\u3092\u5408\u308f\u305b\u305f\u30a2\u30e9\u30f3\u5206\u6563\u306e\u671f\u5f85\u5024\u306f \u03c3\u2080\u00b2\/m + (d\u03c4)\u00b2\/2 \u3067\u3059\u3002\u4e0b\u306e\u56f3\u3068\u8868\u306f\u3001\u305d\u306e\u5e73\u65b9\u6839\u3092\u793a\u3057\u307e\u3059\u3002\u6709\u9650\u306e\u6e2c\u5b9a\u30c7\u30fc\u30bf\u304b\u3089\u5f97\u305f\u504f\u5dee\u306e\u5e73\u5747\u305d\u306e\u3082\u306e\u3067\u306f\u306a\u304f\u3001\u3053\u306e\u30e2\u30c7\u30eb\u3067\u4e88\u60f3\u3055\u308c\u308b\u6c34\u6e96\u3067\u3059\u3002<\/p>\n<figure><img decoding=\"async\" src=\"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-allan-deviation-drift-20261024-figure-0ca13e230052.png\" alt=\"\u767d\u8272\u5468\u6ce2\u6570\u96d1\u97f3\u3068\u7dda\u5f62\u30c9\u30ea\u30d5\u30c8\u3092\u8db3\u3057\u305f\u72ec\u81ea\u30e2\u30c7\u30eb\u3002\u5e73\u5747\u6642\u9593\u3092\u5ef6\u3070\u3059\u3068\u767d\u8272\u96d1\u97f3\u306e\u5bc4\u4e0e\u306f\u4e0b\u304c\u308a\u3001\u30c9\u30ea\u30d5\u30c8\u306e\u5bc4\u4e0e\u306f\u4e0a\u304c\u308b\u3002\u4e21\u8005\u3092\u5408\u308f\u305b\u305f\u66f2\u7dda\u306f\u5341\u6570\u79d2\u4ed8\u8fd1\u3067\u6700\u5c0f\u3068\u306a\u308b\u3002\" style=\"max-width:100%;height:auto\"\/><figcaption>\u72ec\u81ea\u8a08\u7b97\u3002\u7e26\u8ef8\u306f\u5206\u6570\u5468\u6ce2\u6570\u3067\u8868\u3057\u305f\u30a2\u30e9\u30f3\u504f\u5dee\u306e\u6c34\u6e96\u3001\u6a2a\u8ef8\u306f\u5e73\u5747\u6642\u9593\u3002\u4e21\u8ef8\u306f\u5bfe\u6570\u76ee\u76db\u308a\u3067\u3059\u3002\u7d30\u304b\u306a\u767d\u8272\u96d1\u97f3\u3068\u7dda\u5f62\u30c9\u30ea\u30d5\u30c8\u306e\u5bc4\u4e0e\u3092\u3001\u5206\u6563\u3067\u8db3\u3057\u5408\u308f\u305b\u3066\u3044\u307e\u3059\u3002<\/figcaption><\/figure>\n<div style=\"overflow-x:auto\">\n<table style=\"border-collapse:collapse;width:100%\">\n<thead>\n<tr>\n<th style=\"padding:10px;border:1px solid #ccc\">\u5e73\u5747\u6642\u9593<\/th>\n<th style=\"padding:10px;border:1px solid #ccc\">\u96d1\u97f3\u3060\u3051<\/th>\n<th style=\"padding:10px;border:1px solid #ccc\">\u30c9\u30ea\u30d5\u30c8\u3082\u542b\u3080<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"padding:10px;border:1px solid #ccc\">1\u79d2<\/td>\n<td style=\"padding:10px;border:1px solid #ccc\">1.00 \u00d7 10<sup>\u22129<\/sup><\/td>\n<td style=\"padding:10px;border:1px solid #ccc\">1.00 \u00d7 10<sup>\u22129<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"padding:10px;border:1px solid #ccc\">16\u79d2<\/td>\n<td style=\"padding:10px;border:1px solid #ccc\">2.50 \u00d7 10<sup>\u221210<\/sup><\/td>\n<td style=\"padding:10px;border:1px solid #ccc\">3.37 \u00d7 10<sup>\u221210<\/sup><\/td>\n<\/tr>\n<tr>\n<td style=\"padding:10px;border:1px solid #ccc\">64\u79d2<\/td>\n<td style=\"padding:10px;border:1px solid #ccc\">1.25 \u00d7 10<sup>\u221210<\/sup><\/td>\n<td style=\"padding:10px;border:1px solid #ccc\">9.14 \u00d7 10<sup>\u221210<\/sup><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>\u767d\u8272\u96d1\u97f3\u3060\u3051\u306a\u3089\u300164\u79d2\u306e\u5e73\u5747\u306f16\u79d2\u306e\u5e73\u5747\u3088\u308a\u5b89\u5b9a\u3067\u3059\u3002\u3057\u304b\u3057\u30c9\u30ea\u30d5\u30c8\u3092\u542b\u3081\u308b\u3068\u300164\u79d2\u306e\u5024\u306f16\u79d2\u306e\u7d042.7\u500d\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u306e\u30e2\u30c7\u30eb\u3067\u306f\u5341\u6570\u79d2\u4ed8\u8fd1\u306b\u8c37\u304c\u3067\u304d\u307e\u3059\u304c\u3001\u3069\u3093\u306a\u767a\u632f\u5668\u306b\u3082\u4f7f\u3048\u308b\u6700\u9069\u6642\u9593\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u96d1\u97f3\u306e\u7a2e\u985e\u3084\u30c9\u30ea\u30d5\u30c8\u306e\u5927\u304d\u3055\u304c\u5909\u308f\u308c\u3070\u3001\u66f2\u7dda\u3082\u5909\u308f\u308a\u307e\u3059\u3002<\/p>\n<h2>\u5b89\u5b9a\u3057\u3066\u3044\u3066\u3082\u3001\u6b63\u3057\u3044\u5468\u6ce2\u6570\u3068\u306f\u9650\u3089\u306a\u3044<\/h2>\n<p>1 GHz\u3092\u51fa\u3057\u3066\u307b\u3057\u3044\u767a\u632f\u5668\u304c\u3001\u5e38\u306b10 Hz\u9ad8\u3044\u5468\u6ce2\u6570\u3092\u51fa\u3057\u3066\u3044\u308b\u3068\u3057\u307e\u3059\u3002\u307b\u304b\u306e\u63fa\u3089\u304e\u304c\u4e00\u5207\u306a\u3051\u308c\u3070\u3001\u96a3\u308a\u5408\u3046\u5e73\u5747\u5024\u306f\u540c\u3058\u306a\u306e\u3067\u30a2\u30e9\u30f3\u504f\u5dee\u306f\u30bc\u30ed\u3067\u3059\u3002\u305d\u308c\u3067\u3082\u57fa\u6e96\u304b\u3089\u306e\u305a\u308c\u306f\u6b8b\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>NIST\u306f\u3001\u5468\u6ce2\u6570\u304c\u6642\u9593\u3068\u3068\u3082\u306b\u3069\u306e\u7a0b\u5ea6\u5909\u308f\u3089\u306a\u3044\u304b\u3068\u3044\u3046\u5b89\u5b9a\u5ea6\u3068\u3001\u5468\u6ce2\u6570\u304c\u6b63\u3057\u3044\u5024\u306b\u5408\u3063\u3066\u3044\u308b\u304b\u3092\u533a\u5225\u3057\u3066\u3044\u307e\u3059\u3002[2] \u5468\u6ce2\u6570\u306e\u4e00\u5b9a\u306e\u30aa\u30d5\u30bb\u30c3\u30c8\u306f\u96a3\u63a5\u5dee\u304b\u3089\u6d88\u3048\u308b\u305f\u3081\u3001\u5c0f\u3055\u3044\u30a2\u30e9\u30f3\u504f\u5dee\u3060\u3051\u3067\u6821\u6b63\u306e\u6b63\u3057\u3055\u3092\u793a\u3059\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u300c\u03c4\u304c\u4f55\u79d2\u3067\u3001\u5b89\u5b9a\u5ea6\u304c\u3044\u304f\u3064\u304b\u300d\u3068\u300c\u57fa\u6e96\u304b\u3089\u3069\u308c\u307b\u3069\u305a\u308c\u3066\u3044\u308b\u304b\u300d\u3092\u5225\u3005\u306b\u898b\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h2>\u66f2\u7dda\u3092\u6bd4\u3079\u308b\u524d\u306b\u3001\u6e2c\u308a\u65b9\u3092\u305d\u308d\u3048\u308b<\/h2>\n<p>\u4ed5\u69d8\u8868\u3084\u6e2c\u5b9a\u7d50\u679c\u3067\u306f\u3001\u307e\u305a\u540c\u3058\u5e73\u5747\u6642\u9593\u306e\u5024\u3092\u6bd4\u8f03\u3057\u307e\u3059\u3002\u305d\u306e\u3046\u3048\u3067\u3001\u6e2c\u5b9a\u306b\u4f7f\u3063\u305f\u57fa\u6e96\u4fe1\u53f7\u3068\u6e2c\u5b9a\u5668\u306e\u63fa\u3089\u304e\u304c\u5341\u5206\u5c0f\u3055\u3044\u304b\u3001\u6e2c\u5b9a\u306e\u9593\u306b\u7a7a\u767d\u6642\u9593\u304c\u306a\u3044\u304b\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u89b3\u6e2c\u3057\u305f\u5dee\u306b\u306f\u3001\u8abf\u3079\u305f\u3044\u767a\u632f\u5668\u3060\u3051\u3067\u306a\u304f\u3001\u6bd4\u8f03\u76f8\u624b\u3084\u6e2c\u5b9a\u7cfb\u306e\u5909\u52d5\u3082\u5165\u308b\u305f\u3081\u3067\u3059\u3002[1]<\/p>\n<p>\u30c9\u30ea\u30d5\u30c8\u3092\u5dee\u3057\u5f15\u3044\u305f\u7d50\u679c\u306a\u3089\u3001\u5dee\u3057\u5f15\u304f\u524d\u306e\u66f2\u7dda\u3001\u63a1\u7528\u3057\u305f\u30e2\u30c7\u30eb\u3001\u63a8\u5b9a\u3057\u305f\u50be\u304d\u3082\u4e00\u7dd2\u306b\u78ba\u8a8d\u3057\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u3002\u89e3\u6790\u4e0a\u306e\u50be\u304d\u9664\u53bb\u306f\u3001\u767a\u632f\u5668\u305d\u306e\u3082\u306e\u306e\u30c9\u30ea\u30d5\u30c8\u3092\u306a\u304f\u3057\u305f\u3053\u3068\u306b\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u307e\u305f\u3001\u9577\u3044\u03c4\u3067\u306f\u4f7f\u3048\u308b\u533a\u9593\u304c\u5c11\u306a\u304f\u306a\u308a\u307e\u3059\u3002\u308f\u305a\u304b\u306a\u70b9\u306e\u4e0a\u4e0b\u3092\u6027\u80fd\u5dee\u3068\u6c7a\u3081\u3064\u3051\u305a\u3001\u8a18\u9332\u306e\u9577\u3055\u3068\u4fe1\u983c\u533a\u9593\u3082\u898b\u307e\u3059\u3002<\/p>\n<p>\u30a2\u30e9\u30f3\u504f\u5dee\u3092\u4e00\u3064\u306e\u5c0f\u3055\u306a\u6570\u3068\u3057\u3066\u8aad\u3080\u3088\u308a\u3001\u5e73\u5747\u6642\u9593\u3092\u5909\u3048\u305f\u3068\u304d\u306e\u66f2\u7dda\u3068\u3057\u3066\u8aad\u3080\u3002\u305d\u306e\u307b\u3046\u304c\u3001\u3069\u306e\u6642\u9593\u5e45\u306a\u3089\u7d30\u304b\u306a\u96d1\u97f3\u304c\u652f\u914d\u7684\u3067\u3001\u3069\u3053\u304b\u3089\u3086\u3063\u304f\u308a\u3057\u305f\u5909\u5316\u304c\u52b9\u304f\u306e\u304b\u3092\u8003\u3048\u3084\u3059\u304f\u306a\u308a\u307e\u3059\u3002\u5b9f\u969b\u306b\u306f\u767d\u8272\u96d1\u97f3\u3068\u7dda\u5f62\u30c9\u30ea\u30d5\u30c8\u3060\u3051\u3067\u306f\u8aac\u660e\u3067\u304d\u306a\u3044\u3053\u3068\u3082\u3042\u308b\u305f\u3081\u3001\u66f2\u7dda\u306e\u5f62\u3060\u3051\u3067\u539f\u56e0\u3092\u65ad\u5b9a\u305b\u305a\u3001\u5468\u6ce2\u6570\u306e\u6642\u7cfb\u5217\u3084\u6e2c\u5b9a\u6761\u4ef6\u306b\u623b\u3063\u3066\u78ba\u304b\u3081\u307e\u3059\u3002<\/p>\n<h2>\u51fa\u5178<\/h2>\n<ol>\n<li>W. J. Riley, <a href=\"https:\/\/nvlpubs.nist.gov\/nistpubs\/Legacy\/SP\/nistspecialpublication1065.pdf\">Handbook of Frequency Stability Analysis \u2014 NIST Special Publication 1065<\/a>\uff082008\u5e747\u6708\uff09\u3002\u00a75.1\u3001\u00a75.2.2\u301c5.2.4\u3001\u00a75.3\u3001\u00a75.19\u301c5.22\u3002\u57fa\u672c\u5f62\u306e\u5b9a\u7fa9\u3001\u5e73\u5747\u6642\u9593\u3001\u63a8\u5b9a\u306e\u78ba\u304b\u3055\u3001\u30c9\u30ea\u30d5\u30c8\u89e3\u6790\u3092\u53c2\u7167\u3002<\/li>\n<li>NIST, <a href=\"https:\/\/www.nist.gov\/pml\/time-and-frequency-division\/popular-links\/time-frequency-z\/time-and-frequency-z-st-sy\">Time and Frequency from A to Z: St to Sy \u2014 Stability<\/a>\uff082023\u5e743\u67081\u65e5\u66f4\u65b0\uff09\u3002\u5b89\u5b9a\u5ea6\u306e\u5b9a\u7fa9\u3068\u7cbe\u5ea6\u3068\u306e\u9055\u3044\u3002<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>\u5468\u6ce2\u6570\u3092\u4f55\u5ea6\u3082\u6e2c\u3063\u3066\u5e73\u5747\u3059\u308c\u3070\u3001\u7d30\u304b\u306a\u63fa\u3089\u304e\u306f\u5c0f\u3055\u304f\u306a\u308b\u3002\u305d\u3046\u8003\u3048\u3066\u6e2c\u5b9a\u6642\u9593\u3092\u5ef6\u3070\u3057\u305f\u306e\u306b\u3001\u96a3\u306e\u6e2c\u5b9a\u7d50\u679c\u3068\u306e\u5dee\u306f\u304b\u3048\u3063\u3066\u5927\u304d\u304f\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002\u5e73\u5747\u3057\u3066\u3044\u308b\u9593\u306b\u3001\u767a\u632f\u5668\u306e\u5468\u6ce2\u6570\u305d\u306e\u3082\u306e\u304c\u3086\u3063\u304f\u308a\u52d5\u3044\u3066\u3044\u308b\u5834\u5408\u3067\u3059\u3002 \u3053 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1520,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":false,"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":[32],"tags":[305],"class_list":["post-1522","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-semiconductors-electronics","tag-allan-deviation"],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/quantumsea.net\/wp-content\/uploads\/2026\/10\/qs-allan-deviation-drift-20261024-featured-02b72f3cfb43.png","_links":{"self":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1522","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1522"}],"version-history":[{"count":1,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1522\/revisions"}],"predecessor-version":[{"id":1523,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/posts\/1522\/revisions\/1523"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=\/wp\/v2\/media\/1520"}],"wp:attachment":[{"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1522"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1522"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quantumsea.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1522"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}