Journal of the Korean Society for Marine Environment & Energy (한국해양환경ㆍ에너지학회지)

The Korean Society for Marine Environment and Energy (한국해양환경•에너지학회)
권호 표지
DOI QR코드

DOI QR Code

Performance evaluation of Wave observation system using GPS

GPS를 이용한 파고 관측 시스템의 성능 평가

  • Received : 2012.08.14
  • Accepted : 2012.10.15
  • Published : 2012.11.25
Download PDF
⟨ Previous Next ⟩

Abstract

Despite the Wave observations data is very important information to human life at sea, the technology development and research for wave equipments are lacking. In this study, the wave observation system using GPS was evaluated the quality of wave observation data by comparing of long-term observations. The result of the comparison of the acceleration sensor (Hippy-40) and GPS sensor (Mose-1000), the correlation coefficient of the significant wave height and significant wave periods is 0.997 and 0.990 respectively. Also in case of BIAS, the significant wave height is 0.014 m, the significant wave period is -0.212 sec. It makes no significant differences whether the acceleration sensor (Hippy-40) and GPS sensor (Mose-1000). These results of the wave observation data using GPS quality will be evaluated as very good.

파랑 관측 자료는 인간이 바다에서 활동을 하는데 있어 아주 중요한 정보임에도 불구하고, 국내에서는 파랑 관측 장비에 대한 기술 개발이나 연구가 부족한 형편이다. 본 연구는 Single GPS를 이용한 파고 관측 자료의 정확한 품질을 평가하기 위해 장기간 비교 관측을 실시하였다. 가속도센서(Hippy-40)와 GPS센서(Mose-1000)의 비교 관측 결과, 유의파고의 상관계수는 0.997이며, 유의파 주기의 상관계수도 0.990으로 거의 일치하고 있다. 또한 BIAS에서도 유의파고는 0.014 m, 유의파주기는 -0.212초로 거의 차이가 없는 것으로 평가되었다. 이러한 결과는 GPS를 이용한 파고 관측 자료의 품질이 아주 우수한 것으로 평가되는 것이다.

Keywords

References

  1. Holthuijsen, L.H., 2007, "Waves in Oceanic and Coastal Waters", p. 387.
  2. Jeans, G., Bellamy, I., Vries, J.J. and Weert, P., 2012, "Sea Trial of the New Datawell GPS Directional Waverider"(www.datawell.nl).
  3. Kawai, H., Satoh, M., Kawaguchi, K. and Seki, K., 2011, "Annual Report on Nationwide Ocean Wave Information Network for Ports and Harbours (NOWPHAS 2009)" Technical Note of the Port and Airport Research Institute", Port and Airport Research Institude, JAPAN. No. 1226, p. 120(in Japaness).
  4. Kawai, H., Satoh, M., Kawaguchi, K. and Seki, K., 2012, "Offshore Wave Characteristics Observed by GPS Buoys on the Tohoku to Shikoku District Coast of the Pacific Ocean, Japan", Technical Note of the Port and Airport Research Institute", Port and Airport Research Institude, JAPAN. No. 1249, p. 51(in Japaness).
  5. Kim, T.H., Gang, Y.S., Lee, W.B. and Kim, D.H., 2011, "Development of Long Period Wave Observation System based on GPS", Vol. 35, No. 5, pp.682-689.
  6. KMA, 2009, "Strategy to build a real-time monitoring system for coastal disasters", p. 255.
  7. Nagai, T., Shimizu, K. and Sasaki, M., 2008, "Characteristics of th Observed offshore Data by the Northern Pacific GPS Buoys", Report of the Port and Airport Research Institute Vol 47 no 2 pp.1-52.(in Japaness)
  8. Takashi, F., Terada, Y., Nagai, T. and Kato, T., 2004, "A Development of GPS Wave, Tide, and Tsunami Meter", Wave, Tide Observations and Modelings in the Asian-Pacific Region, ACECCTC1 Workshop. pp.61-72.
  9. WMO, 1998, "Guide to Wave Analysis and Forecasting", p. 159.
  10. Yoo, Y.J., Song, C.U., Nobuyoshi, K. and Hidenobu, F., 2003, "A Study on Wave Observation System with GPS Arrayed Buoys by using MUSIC Method", Inter. J. of Navigation and Port Research. Vol 27, No. 6, pp.677-682. https://doi.org/10.5394/KINPR.2003.27.6.677