역사유물은 지질구조와는 달리 일정한 방향성이 없이 매몰되어 있는 경우가 많으므로 고적지 탐사를 위해서는 근본적으로 2차원 보다는 3차원물리탐사가 바람직하다. 그러나 3차원 GPR 탐사는 매우 조밀한 측선설정과 아울러 대단히 많은 자료를 획득하여야 하므로 자력, 전자탐사와 같이 유적지 탐사에 많이 응용하는 다른 탐사방법에 비하여 상대적으로 현장탐사기간이 길어질 뿐만 아니라 많은 경비가 소요된다. 이 연구에서는 두 조의 송, 수신 안테나와 안테나 이동 궤적을 연속적으로 자동 기록할 수 있는 측량 시스템을 이용하여 소규모의 3차원 GPR 자동연속 탐사 시스템을 구성하였다. 3차원 측선을 미리 측량함 또한 상당한 기간과 경비가 소요되므로 미리 설정하지 않은 임의의 경로를 따라 자료를 취득하는 개념을 도입하였다. 이와 병행하여 개발한 자료취득 시스템으로 획득한 자료를 효율적으로 전산처리하고 영상화하는 소프트웨어 또한 개발하였다. 개발한 시스템을 이용하여 부여 외곽 백제 유적지로 추정되는 지역에서 3차원 GPR 탐사를 수행하였다. 약 $17,000m^2$에 걸친 지역의 3차원 GPR 탐사에 약 6 시간의 현장작업시간이 소요되었으며 이는 개발한 시스템의 효율성을 입증한다. 미리 설정한 격자망 측선이 아닌 임의의 측선 경로를 따라 자료를 획득하였음에도 불구하고 고분해능 3차원 지하 영상의 획득이 가능하였으며, 이로부터 경작지, 수로, 인공 구조물 또는 유물 등의 존재를 알려주는 이상대들을 파악할 수 있었다. 이 연구를 통하여, 3차원 GPR 탐사 또한 국부적인 이상대의 규명뿐만 아니라 광역적인 유적지 조사에도 다른 물리탐사와 마찬가지로 쉽게 활용될 수 있다는 결론을 얻을 수 있었다.
역사유물은 지질구조와는 달리 일정한 방향성이 없이 매몰되어 있는 경우가 많으므로 고적지 탐사를 위해서는 근본적으로 2차원 보다는 3차원 물리탐사가 바람직하다. 그러나 3차원 GPR 탐사는 매우 조밀한 측선설정과 아울러 대단히 많은 자료를 획득하여야 하므로 자력, 전자탐사와 같이 유적지 탐사에 많이 응용하는 다른 탐사방법에 비하여 상대적으로 현장탐사기간이 길어질 뿐만 아니라 많은 경비가 소요된다. 이 연구에서는 두 조의 송, 수신 안테나와 안테나 이동 궤적을 연속적으로 자동 기록할 수 있는 측량 시스템을 이용하여 소규모의 3차원 GPR 자동연속 탐사 시스템을 구성하였다. 3차원 측선을 미리 측량함 또한 상당한 기간과 경비가 소요되므로 미리 설정하지 않은 임의의 경로를 따라 자료를 취득하는 개념을 도입하였다. 이와 병행하여 개발한 자료취득 시스템으로 획득한 자료를 효율적으로 전산처리하고 영상화하는 소프트웨어 또한 개발하였다. 개발한 시스템을 이용하여 부여 외곽 백제 유적지로 추정되는 지역에서 3차원 GPR 탐사를 수행하였다. 약 $17,000m^2$에 걸친 지역의 3차원 GPR 탐사에 약 6 시간의 현장작업시간이 소요되었으며 이는 개발한 시스템의 효율성을 입증한다. 미리 설정한 격자망 측선이 아닌 임의의 측선 경로를 따라 자료를 획득하였음에도 불구하고 고분해능 3차원 지하 영상의 획득이 가능하였으며, 이로부터 경작지, 수로, 인공 구조물 또는 유물 등의 존재를 알려주는 이상대들을 파악할 수 있었다. 이 연구를 통하여, 3차원 GPR 탐사 또한 국부적인 이상대의 규명뿐만 아니라 광역적인 유적지 조사에도 다른 물리탐사와 마찬가지로 쉽게 활용될 수 있다는 결론을 얻을 수 있었다.
Since the buried cultural relics are three-dimensional (3-D) objects in nature, 3-D survey is more preferable in archeological exploration. 3-D Ground Penetrating Radar (GPR) survey based on very dense data in principle, however, might need much higher cost and longer time of exploration than other ...
Since the buried cultural relics are three-dimensional (3-D) objects in nature, 3-D survey is more preferable in archeological exploration. 3-D Ground Penetrating Radar (GPR) survey based on very dense data in principle, however, might need much higher cost and longer time of exploration than other geophysical methods commonly used for the archeological exploration, such as magnetic and electromagnetic methods. We developed a small-scale continuous data acquisition system which consists of two sets of GPR antennas and the precise positioning device tracking the moving-path of GPR antenna automatically and continuously. Since the high cost of field work may be partly attributed to establishing many profile lines, we adopted a concept of data acquisition at arbitrary locations not along the pre-established profile lines. Besides this hardware system, we also developed several software packages in order to effectively process and visualize the 3-D data obtained by the developed system and the data acquisition concept. Using the developed system, we performed 3-D GPR survey to investigate the possible historical remains of Baekje Kingdom at Buyeo city, South Korea, prior to the excavation. Owing to the newly devised system, we could obtain 3-D GPR data of this survey area having areal extent over about $17,000m^2$ within only six-hours field work. Although the GPR data were obtained at random locations not along the pre-established profile lines, we could obtain high-resolution 3-D images showing many distinctive anomalies, which could be interpreted as old agricultural lands, waterways, and artificial structures or remains. This cast: history led us to the conclusion that 3-D GPR method is very useful not only to examine a small anomalous area but also to investigate the wider region of the archeological interests.
Since the buried cultural relics are three-dimensional (3-D) objects in nature, 3-D survey is more preferable in archeological exploration. 3-D Ground Penetrating Radar (GPR) survey based on very dense data in principle, however, might need much higher cost and longer time of exploration than other geophysical methods commonly used for the archeological exploration, such as magnetic and electromagnetic methods. We developed a small-scale continuous data acquisition system which consists of two sets of GPR antennas and the precise positioning device tracking the moving-path of GPR antenna automatically and continuously. Since the high cost of field work may be partly attributed to establishing many profile lines, we adopted a concept of data acquisition at arbitrary locations not along the pre-established profile lines. Besides this hardware system, we also developed several software packages in order to effectively process and visualize the 3-D data obtained by the developed system and the data acquisition concept. Using the developed system, we performed 3-D GPR survey to investigate the possible historical remains of Baekje Kingdom at Buyeo city, South Korea, prior to the excavation. Owing to the newly devised system, we could obtain 3-D GPR data of this survey area having areal extent over about $17,000m^2$ within only six-hours field work. Although the GPR data were obtained at random locations not along the pre-established profile lines, we could obtain high-resolution 3-D images showing many distinctive anomalies, which could be interpreted as old agricultural lands, waterways, and artificial structures or remains. This cast: history led us to the conclusion that 3-D GPR method is very useful not only to examine a small anomalous area but also to investigate the wider region of the archeological interests.
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문제 정의
A common approach will be to obtain GPR data along the profile lines laid in grid-form, but establishing numerous survey lines itself would lower the efficiency of field work. In this study, we established a hardware and software system assuming that the data will be measured along the arbitrary lines which will be determined by the operator during data acquisition.
Using the developed 3-D GPR system, we performed 3-D GPR survey to investigate the possible historical remains of Baekje Kingdom at Buyeo city, South Korea, prior to the excavation. The principal purpose of the investigation was to provide the high resolution images of subsurface for the archeological excavation of the area. Besides this, another purpose was to investigate the applicability and effectiveness of the developed continuous data acquisition system.
제안 방법
The system consists of two sets of GPR antennas and the precise positioning device tracking the path of antenna movement automatically and continuously. Besides this hardware system, we also developed 3-D GPR data processing software for the data acquisition method designed in this study. Using the developed system, 3-D GPR survey was conducted to investigate the possible historical remains of Backje Kingdom at Buyeo city, South Korea, prior to the excavation.
Resources. GPR3DSlice was coded for editing and visualizing the 3-D GPR data obtained through the way developed in this study. The first step of "Pre-Processing'' in Fig.
2 km. It took only six hours to complete the field work including the extra work such as charging and exchanging batteries etc., which implies the efiElciency of the data acquisition method adopted in this study.
Using the developed system, 3-D GPR survey was conducted to investigate the possible historical remains of Backje Kingdom at Buyeo city, South Korea, prior to the excavation. Owing to the newly devised system, we could acquire 3-D GPR data in this survey area having the areal extent over about 17, 000 m2 within six-hours field work. Although the GPR data were obtained at random locations not along the pre-established profile lines, we could acquire high-resolution 3-D images showing many distinctive anomalies, which could be interpreted as old agricultural lands, waterways, and so on.
The survey area was flattened prior to the field work so as to apply the developed GPR system systematically and to enhance the ground coupling condition of GPR antennas. RTK system with the base station operation was adopted as a realtime positioning device since the survey area was open and GPS signal would be strong enough to get the accuratepositioning data of antenna movement.
for the effective 3-D GPR survey. The system consists of two sets of GPR antennas and the precise positioning device tracking the path of antenna movement automatically and continuously. Besides this hardware system, we also developed 3-D GPR data processing software for the data acquisition method designed in this study.
Considering the characteristic feature of the data acquisition method, we also developed software to edit, to process, and to visualize 3-D GPR data. Using the developed 3-D GPR system, we performed 3-D GPR survey to investigate the possible historical remains of Baekje Kingdom at Buyeo city, South Korea, prior to the excavation. The principal purpose of the investigation was to provide the high resolution images of subsurface for the archeological excavation of the area.
Besides this hardware system, we also developed 3-D GPR data processing software for the data acquisition method designed in this study. Using the developed system, 3-D GPR survey was conducted to investigate the possible historical remains of Backje Kingdom at Buyeo city, South Korea, prior to the excavation. Owing to the newly devised system, we could acquire 3-D GPR data in this survey area having the areal extent over about 17, 000 m2 within six-hours field work.
대상 데이터
2 shows the track chart showing the movement of antenna system. The survey area was 300 m x 90 m, and the total length of the survey lines was about 35.2 km. It took only six hours to complete the field work including the extra work such as charging and exchanging batteries etc.
참고문헌 (6)
Baekjae Kingdom Research Institute, 2003, Reoprt on the trench investigation to explore historical remains of Baekjae Kingdom at Gatap-ri, Buyeo city, unpublished
Briken, R., Miller, D. E., Burns, M., Albats, P., Casadonte, R., Deming, R., Derubeis, T., Hansen, T., and Oristaglio, M., 2002, Efficient large-scale underground utility mapping with a multi-channel ground-penetrating imaging radar system, Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP 2002), 13IDA1, February 2002
Evangelista, R., Magee, R., and Wedepohl, E., 2002, 3D imaging of an iron age archeological site: GPR analysis at Muweilah, United Arab Emirates (UAE), Proceedings of the 9'th International Conference on Ground Penetrating Radar
Goodman, D., Piro, S., Nishimura, Y., Patterson, H., and Gaffney, V., 2004, Discovery of a 1st century AD Roman amphitheater and other structures at the Forum Novum by GPR, Journal of EnvironmentaI and Engineering Geophysics, 9, 35-42
Lehemann F., and Green, A. G, 1999, Semiautomated georadar data acquisition in three dimensions, Geophysics, 64, 719-731
Oh, H., and Shin, J., 2004, Archeological interpretation of GPR data applied on Wolseong Fortress in Gyeongju, Mulli-Tamsa (Geophysical Exploration), 7, 256-261 (in Korean with English abstract)
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