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NIM frequency stability measurement system

机译:NIM频率稳定度测量系统

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Advances in the frequency stability measurement at National Institute of Metrology (NIM) are presented. The performance of the automated measurement system is described. The measuring uncertainty is discussed in detail. It is pointed out that the noise floor is better than -176 dBc/Hz for the frequency-domain system, and is nearly sigma /sub y/( tau ) approximately=5*10/sup -14/ tau ( tau =1 ms-0.1 s), 1.5*10/sup -13/( tau =1 s) in the time domain (BW
机译:介绍了美国国家计量学院(NIM)的频率稳定性测量方面的进展。描述了自动测量系统的性能。测量不确定度将详细讨论。要指出的是,对于频域系统,本底噪声优于-176 dBc / Hz,并且接近sigma / sub y /(tau)大约= 5 * 10 / sup -14 / tau(tau = 1 ms -0.1 s),时域为1.5 * 10 / sup -13 /(tau = 1 s)(BW

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