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Proceedings Article

Additional spread spectrum modulation timing method in BPC

[+] Author Affiliations
Ping Feng, Guichen Wu, Yan Bai, Xiaofeng Ding

National Time Service Ctr. (China)

Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75441X (December 27, 2010); doi:10.1117/12.885845
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From Conference Volume 7544

  • Sixth International Symposium on Precision Engineering Measurements and Instrumentation
  • Jiubin Tan; Xianfang Wen
  • Hangzhou, China | August 08, 2010

abstract

Low frequency time-code timing service is an important mode in the modern timing system, and it is actively commended by International Telecommunications Union (ITU). Low frequency time-code timing radio station (BPC) is built by National Time Service Center in China. The BPC broadcasts are used by millions of people to synchronize consumer electronic products like wall clocks, clock radios, and wristwatches. In addition, BPC is used for high level applications such as network time synchronization and frequency calibrations. Based on the modern signal characteristic of low frequency time-code of BPC, the additional spread spectrum modulation timing method in idle carrier wave is presented. A new structure of signal modulation is expatiated. The rationale of the additional spread spectrum modulation timing method in BPC is researched. The performance of a new system error is analyzed. The research results indicate that the anti-jamming performance can be improved by the additional spread spectrum modulation timing method in BPC, and low frequency time-code timing service can then be used broadly.

© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Ping Feng ; Guichen Wu ; Yan Bai and Xiaofeng Ding
"Additional spread spectrum modulation timing method in BPC", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75441X (December 27, 2010); doi:10.1117/12.885845; http://dx.doi.org/10.1117/12.885845


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