DocumentCode :
2591932
Title :
Study of algorithm to ensemble atomic time
Author :
Zhong, Chong Xia ; Xu, Yue Qing ; Yang, Jun ; Zhang, Sheng Kang
Author_Institution :
Beijing Inst. of Radio Metrol. & Meas., Beijing, China
fYear :
2009
fDate :
20-24 April 2009
Firstpage :
664
Lastpage :
669
Abstract :
An ensemble atomic time algorithm was developed based on wavelet packet analysis. Ensemble atomic time can be obtained by decomposing the clock difference of atomic clocks, extracting the components of different frequency domain, and then choosing the weight according to the stability of different component denoted with wavelet variance. The optimization characteristic of genetic algorithm was introduced and model of atomic clock signal was constructed. And genetic algorithm was used to optimize this model, then to validate the optimization model with dispersion data of atomic clock measured in laboratory. It can prove that genetic algorithm and wavelet packet algorithm was appropriate.
Keywords :
atomic clocks; frequency-domain analysis; genetic algorithms; wavelet transforms; atomic clock signal; clock difference; ensemble atomic time algorithm; frequency domain; genetic algorithm; wavelet packet analysis; Algorithm design and analysis; Atomic clocks; Atomic measurements; Dispersion; Frequency domain analysis; Genetic algorithms; Stability; Wavelet analysis; Wavelet domain; Wavelet packets;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Frequency Control Symposium, 2009 Joint with the 22nd European Frequency and Time forum. IEEE International
Conference_Location :
Besancon
ISSN :
1075-6787
Print_ISBN :
978-1-4244-3511-1
Electronic_ISBN :
1075-6787
Type :
conf
DOI :
10.1109/FREQ.2009.5168266
Filename :
5168266
Link To Document :
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