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随着时间和频率测量技术的发展以及测速、导航等技术的广泛应用,对频率源的短期频率稳定度(以下简称短稳)要求愈来愈高,特别是目前对频率源的毫秒级采样时间的频率稳定度也提出了要求。晶体振荡器(以下简称晶振)的短稳在各类频率源中目前还是处于领先地位,加上它结构简单、工作可靠、能长期连续工作、耗电少、成本低等优点,使它的应用非常广泛。各种原子频标的出现虽然将频率准确度和老化漂移的指标提高了几个数量级,但是当它们
With the development of time and frequency measurement technology and the extensive application of speed measurement and navigation technology, the requirements on the short-term frequency stability (hereinafter referred to as short-term stability) of the frequency source are getting higher and higher, especially in the current millisecond sampling time The frequency stability also poses a requirement. Crystal oscillator (hereinafter referred to as the crystal oscillator) short-term stability in various types of frequency source is still in a leading position, coupled with its simple structure, reliable, long-term continuous operation, low power consumption, low cost, its application Very extensive. Although the appearance of various atomic frequency scales improves the frequency accuracy and aging drift by several orders of magnitude,