Browse > Article

A Study on Performance Improvement and Development of Integrity Verification Software of TCP/IP output data of VCS Correlation Block  

Yeom, Jae-Hwan (한국천문연구원)
Roh, Duk-Gyoo (한국천문연구원)
Oh, Chung-Sik (한국천문연구원)
Jung, Jin-Seung (한국천문연구원)
Chung, Dong-Kyu (한국천문연구원)
Oh, Se-Jin (한국천문연구원)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.13, no.4, 2012 , pp. 211-219 More about this Journal
Abstract
In this paper, we described the software development for verifying the integrity of output data of TCP/IP for VLBI Correlation Subsystem (VCS) correlation block and proposed the performance improvement method in order to prevent the data loss of correlation output. The VCS correlation results are saved at the Data Archive system through TCP/IP packet transmission. In this paper, the integrity verification software is developed so as to confirm the integrity of correlation result saved at the data archive system using TCP/IP packet information of VCS. The 3-step integrity verification process is proposed by using the developed software, its effectiveness was confirmed in consequence of correlation experiments. In addition, TCP/IP packet transmission must be completed within minimum integration period. However, there is not only TCP/IP packet loss occurred but also the problem of correlation result integrity affected in account of a large quantity of packets and data during short integration time. In this paper, the reason of TCP/IP packet loss is analyzed and the modified methods for FPGA(Field Programmable Gate Array) of VCS are proposed, the integrity problem of correlation results will be solved.
Keywords
VCS; Data Archive; TCP/IP packet transmission; Integrity verification software;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 노덕규 외 15명, "2008년도 한일공동 VLBI상관기 및 수신기 개발 결과보고서", 한국천문연구원, pp. 3-5, 2008.
2 VLBI Standard Interface Specification, http://vlbi.org/vsi/
3 염재환, 오세진, 노덕규, 강용우, 박선엽, 이창훈, 정현수, "한일공동 VLBI상관기를 위한 소프트웨어 상관기의 개발", 한국우주과학회, 제26권 4호, pp. 567-588, 2009.
4 VLBI Correlation Subsystem Execution Specificalion, Elecs Industry Co., Ltd.
5 노덕규 외 15명, "2009년도 한일공동 VLBI상관기 및 수신기 개발 결과보고서", 한국천문연구원, pp. 267-270, 2009.
6 VCS TCPPKT Specification, Elecs Industry Co., Ltd.
7 정구영, 노덕규, 오세진, 연재환, 강용우, 이창훈, 정현수, 김광동, "FPGA를 이용한 전파천문용 디지털 필터설계의 기본연구", 신호처리시스템학회 논문지, 제9권 제1호, pp. 62-74, 2008.
8 오세진, 노덕규, 염재환 외 6명, "VLBI 상관서브시스템 본제품의 제작현장 성능시험", 신호처리시스템학회 논문지 제12권 제4호, pp. 333-340, 2011.