翻訳と辞書 Words near each other ・ Time Crisis ・ Time Crisis (series) ・ Time Crisis 3 ・ Time Crisis 4 ・ Time Crisis II ・ Time Cube ・ Time cycles ・ Time Dance ・ Time delay and integration ・ Time delay neural network ・ Time delay toxin activation ・ Time dependent vector field ・ Time deposit ・ Time derivative ・ Time Detectives ・ Time deviation ・ Time dilation ・ Time dilation of moving particles ・ Time discipline ・ Time displacement ・ Time diversity ・ Time division multiple access ・ Time Does Not Heal ・ Time Doesn't Heal ・ Time Doesn't Notice ・ Time domain ・ Time domain astronomy ・ Time domain electromagnetics ・ Time domain vernier method ・ Time Don't Run Out on Me Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Time deviation ： ウィキペディア英語版 Time deviation Time deviation (TDEV),〔(NIST SP 1065: Handbook of Frequency Stability Analysis )〕 also known as $\backslash sigma\_x(\backslash tau)$, is the time stability of phase ''x'' versus observation interval τ of the measured clock source. The time deviation thus forms a standard deviation type of measurement to indicate the time instability of the signal source. This is a scaled variant of frequency stability of Allan deviation. It is commonly defined from the modified Allan deviation, but other estimators may be used. ''Time variance'' (''TVAR'') also known as $\backslash sigma\_x^2(\backslash tau)$ is the time stability of phase versus observation interval tau. It is a scaled variant of Modified Allan variance. TDEV is a metric often used to determine an aspect of the quality of timing signals in telecommunication applications and is a statistical analysis of the phase stability of a signal over a given period. Measurements of a reference timing signal will refer to its TDEV and maximum time interval error (MTIE) values, comparing them to specified masks or goals. ==Definition== The most common estimator uses the modified Allan variance :$\backslash sigma\_x^2(\backslash tau)\; =\; \backslash frac\backslash operatorname\backslash sigma\_y^2(n\backslash tau\_0)$ where $\backslash tau\; =\; n\backslash tau\_o$. The 3 in the denominator normalizes TVAR to be equal to the classical variance if the deviations in x are random and uncorrelated (white-noise). or TDEV, which is the square-root of TVAR, may be derived from MDEV modified Allan deviation :$\backslash sigma\_x(\backslash tau)\; =\; \backslash frac\backslash sigma\_y(n\backslash tau\_0)$ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Time deviation」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.