PGA 데이터의 실시간 전송능력 향상

다국어 초록 (Multilingual Abstract)

In this paper, we propose an efficient method which improves the performance of transmission of PGA which is essential data for real-time earthquake monitoring system. Currently, above 120 earthquake stations were installed nationwide and additional installation is expected because the social interesting of earthquake hazard is rising. Real-time earthquake monitoring system checks earthquake occurrence by using PGA were calculated from acceleration data of each seismic station. An efficient method of PGA data transmission is key factor of real-time monitoring. The key idea of proposed method is to deal with each seismic station using an unique ID, to assign one bit to indicate whether a packet include a station's data or not. Proposed method can contain more station data and decrease the data loss compared to current method. To verify proposed method, we investigate the turnaround time and ratio of data loss using above 91000 packets. As results of experiment. the proposed method is proven that the method need more time about 50% but reduce the data loss about 87% as compared to previous method.

참고문헌 (Reference)

1 이희일, "통합 지진네트워크 구축" 19-27, 2002

2 지헌철, "지진신속평가시스템 구축 - 실시간 지진동의 2차원적 영상화" 51-60, 2002

3 "리눅스 man page "timex, psinfo, procinfo""

4 "기상청 홈페이지"

5 "RFC 793, Transmission Control Protocol"

6 "RFC 768,User Datagram Protocol"

7 "RFC 1889, RTP : A Transport Protocol for Real-Time Applications"

8 임인섭, "MMA 데이터를 이용한 실시간 지진동 감시 시스템 설계" 한국컴퓨터정보학회 12 (12): 29-38, 2007

9 "CRC"