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Xu J.,Beijing National Data Center and Radio Nuclide Laboratory | Wang J.,Beijing National Data Center and Radio Nuclide Laboratory | Wang J.,China Earthquake Administration | Li J.,Beijing National Data Center and Radio Nuclide Laboratory | Shang J.,Beijing National Data Center and Radio Nuclide Laboratory
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2013

Based on the needs of maintenance and management of national data center verification data processing system, the NDC operation and management support system is developed. The whole process of operation of the data processing system can be monitored by this system using the J2EE development framework based on SSH. At the same time, based on role access control technology, rights management, process management, document transfer function can be implemented quickly in the system. The system has been applied to Comprehensive Nuclear-Test-Ban Treaty Beijing National Data Centre and improves the operation and management efficiency of internal communication and coordination ability of the system. Source


Shi J.-F.,Beijing National Data Center and Radio Nuclide Laboratory | Xu J.,Beijing National Data Center and Radio Nuclide Laboratory | Wang J.,Beijing National Data Center and Radio Nuclide Laboratory | Wang J.,China Earthquake Administration | And 4 more authors.
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2013

Accurate regional seismic travel time predictions are important to lower the global seismic detection threshold in global monitoring systems. The method of improving regional seismic travel times based on three-dimensional global model and seismic tomography is discussed and tasks for extending RSTT tomography to new areas are presented in the paper. The method reduces travel time residual and improves location accuracy at regional distance. Source


Zhang B.,Beijing National Data Center and Radio Nuclide Laboratory | Wang J.,Beijing National Data Center and Radio Nuclide Laboratory | Qiu H.-M.,Beijing National Data Center and Radio Nuclide Laboratory | Wang X.-M.,Beijing National Data Center and Radio Nuclide Laboratory | Li J.,Beijing National Data Center and Radio Nuclide Laboratory
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2012

CTBT Beijing National Data Centre may access International Monitoring System data through International Data Centre in accordance with the Comprehensive Nuclear-Test-ban Treaty (CTBT). Non-continuous seismic station date requests are discussed in this paper. The WaveExpert program which generate station-specific data request intervals based on specific regions of the seismic events is presented. The WaveExpert program is a part of the NDC automatic processing pipeline, and it is executed and receives input via Tuxedo. The program also has been realized in China National Data Center. Source


Wang J.,China Earthquake Administration | Wang J.,Beijing National Data Center and Radio Nuclide Laboratory | Cui J.-J.,Beijing National Data Center and Radio Nuclide Laboratory | Wang X.-M.,China Earthquake Administration | And 5 more authors.
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2013

Source specific station correction is most widely used in the seismic location correction method in the CTBT verification systems. The principles and calculation methods of source specific station corrections are discussed and the impact on the event location is evaluated in this paper. The method is preliminary implemented in CTBT Beijing national data center, and the results prove that: this method can improve the location accuracy of seismic events in network processing and interactive analysis. Source


Zhang B.,Beijing National Data Center and Radio Nuclide Laboratory | Li J.,Beijing National Data Center and Radio Nuclide Laboratory | Wang X.-M.,Beijing National Data Center and Radio Nuclide Laboratory | Wang X.-M.,China Earthquake Administration | And 5 more authors.
Hedianzixue Yu Tance Jishu/Nuclear Electronics and Detection Technology | Year: 2013

The optimizing and improving the flow of data process system for National Data Center is discussed in the paper. On the basis of research and analysis of national data center data processing system, the process control of the data processing system is improved and optimized using database technology and Tuxedo distributed application control interface technology. The function about auxiliary station data request is added in the system. The automatic processing, interactive analysis, post-analysis processing, event alarm, auxiliary station data request and other related issues which was involves in fast processing about the unexpected events in the running data processing system is solved. The optimized data processing system which maintains the functions and features of the original system can response to emergency. The optimized system can run reliably and stably through practical operation of test and satisfy the design target. Source

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