Analysis and Comparison of Performance of Frequency Standard Measurement Systems Based on Beat-Frequency Method

	Analysis and Comparison of Performance of Frequency Standard Measurement Systems Based on Beat-Frequency Method
	Liu, Ya; Li, Xiao-Hui; Wang, Dan-Ni; Wang, Wen-Li; Li, Jian-Xun
	2008
会议名称	IEEE International Frequency Control Symposium
会议录名称	2008 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM, VOLS 1 AND 2
会议日期	MAY 19-21, 2008
会议地点	Honolulu, HI
产权排序	1
ISBN	978-1-4244-1794-0
摘要	The performance of two high precision frequency-stability measurement systems, analog beat method time-interval analyzer, has been compared with digital beat method systems developed at the National Time Service Center. In this paper, the digital beat method system is a measuring technique that uses a muti-channel beat note digital analyzer in place of the time interval counter. This technique uses the local oscillator and mixer to convert the test signals and reference signals to a low frequency. This article reports on the frequency-stability analysis of the digital beat method in detail based upon the beat method working at 10MHz with 1Hz beat note and the cross correlation arithmetic. The principle of the system is reviewed, the design approach and compared system is described, and the experimental results are present. The measurement system shows that the digital beat method system can achieve a stability of 3x10(-14)/tau (Allan deviation, tau=1s) when the analog beat method can acquire a stability of 4.7x10(-12)/tau (Allan deviation, tau=1s) by using the SR620. An approach to reduce quantization noise effects and evaluate performance of the algorithm problems has been tested too.
部门归属	高精度时间传递与精密测定轨研究室
主办者	IEEE
收录类别	CPCI
语种	英语
文献类型	会议论文
条目标识符	http://210.72.145.45/handle/361003/5280
专题	高精度时间传递与精密测定轨研究室
推荐引用方式 GB/T 7714	Liu, Ya,Li, Xiao-Hui,Wang, Dan-Ni,et al. Analysis and Comparison of Performance of Frequency Standard Measurement Systems Based on Beat-Frequency Method[C],2008.

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