A new method to measure LF time code service signal based on virtual instrument

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	A new method to measure LF time code service signal based on virtual instrument
	Feng, Ping; Wu, Guichen; Liu, Zhifang; Bai, Yan
	2007
会议名称	Joint IEEE International Frequency Control Symposium/21st European Frequency and Time Forum
会议录名称	PROCEEDINGS OF THE 2007 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM-JOINTLY WITH THE 21ST EUROPEAN FREQUENCY AND TIME FORUM, VOLS 1-4
会议日期	MAY 29-JUN 01, 2007
会议地点	Geneva, SWITZERLAND
产权排序	1
ISBN	978-1-4244-0646-3
摘要	Both of the method and instrumentation for measurement of the low-frequency (LF) standard freuquency and time signal service system was proposed in the ITU-R new question draft published in Dec, 2005. Since the foundation of experimental LF time code service station (BPC) by National Time Service Center, Chinese Academy of Sciences in 1998, lots of research have been done in this field. Based on these research activities, a new generation of LF time code service station will run on May, 2007. The widely used method calculates field strength of the LF signal by the level of the received demodulation signal. To avoid the possibile measure error in the complicate environment, we should analyse the real measure environment. In the paper, a new method is introduced to measure signal strength considering the characters of the LF time-code signal, which is based on the technology of virtual instrument. The induction signal on the antenna is amplified, filtered and sampled directly. Then, the discrete signal is analyzed and calculated by digital signal processing and adaptive trap filter which restrain the narrow-band interference.
部门归属	授时方法与技术研究室
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/361003/5316
专题	授时方法与技术研究室
推荐引用方式 GB/T 7714	Feng, Ping,Wu, Guichen,Liu, Zhifang,et al. A new method to measure LF time code service signal based on virtual instrument[C],2007.

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