atomic time scale 中文意思是什麼
atomic time scale
解釋
原子時標-
A common problem in theoretical chemistry, condensed matter physics and materials science is the calculation of the time evolution of an atomic scale system where, for example, chemical reactions and / or diffusion occur
一個在理論化學方面的很普通的問題，涉及到凝聚體物理學、材料科學，例如：化學反應和擴散發生的時間。 -
Based on the basic principle of wavelet analysis, multi - resolution analysis of signal in atomic clock is made. the coefficients of wavelet transform for synthesis atomic time, which are weighed and averaged at different wavelet scales, are obtained. then according to reconstruction theorem, multi - resolution synthesis time scale can be reconstructed. since the signal of atomic clock has been analysed by multi - resolution, we can use wavelet variance at different scales to weight and average the coefficients. thus either the difference in stability of different clock or the varying characteristic of the same clock at the different scale are all considered. finaly, this method is checked by the measured data from national timing serve center of shaanxi astronomy observatory. it confirmed that this technique, which is simple and practicable, is a new method of multi - resolution. from this method, the common characteristic of different clocks can be extracted. the stability of multi - resolution synthesis atomic time scale is obviously superior to that of other methods
本文根據小波分析的基本原理，對原子鐘信號進行多解析度分解，將分解后的小波變換系數進行加權平均，得到不同小波尺度綜合原子時的加權平均小波變換系數，然後由小波變換的重構條件，反演綜合時間尺度.由於對原子鐘信號進行了小波分解，利用不同尺度的小波變換系數的小波方差進行加權平均，這樣既考慮不同原子鐘在穩定性方面的差異，又顧及同一臺原子鐘在不同小波尺度的變化特性.最後根據陜西天文臺國家授時中心的實測數據對這種方法進行了檢驗.表明這是一種全新的多解析度綜合方法，這種方法比較簡單而切實可行，它能提取各個原子鐘的共同特性，多解析度綜合時間尺度的平穩性明顯優于其他方法 -
Utc is a stable and even time scale based on the frequency of atomic oscillations in atomic clocks. this is the current international time scale for civil use
協調世界時是以原子鐘內的原子振動頻率為依據的時間標準，是十分穩定而且均勻的時標，亦是現時國際所採用的民用時間標準。 -
Description of some of the expected future developments in time and frequency standards and distribution, including such topics as chip - scale atomic clocks ( size of a rice grain, powered by aa battery, potentially capable of low cost mass production )
介紹一些未來可預期的時間頻率標準和發布技術的進展，包括諸如「晶元級的原子鐘」 （大米粒尺寸，由aa電池供電，具有低成本大批量生產潛力） 。
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