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http://dx.doi.org/10.7780/kjrs.2022.38.3.6

Prediction of Sea Water Temperature by Using Deep Learning Technology Based on Ocean Buoy  

Ko, Kwan-Seob (Department of Military Digital Convergence, Ajou University)
Byeon, Seong-Hyeon (Department of Defence Science, Korea National Defence University)
Kim, Young-Won (Department of Defence Science, Korea National Defence University)
Publication Information
Korean Journal of Remote Sensing / v.38, no.3, 2022 , pp. 299-309 More about this Journal
Abstract
Recently, The sea water temperature around Korean Peninsula is steadily increasing. Water temperature changes not only affect the fishing ecosystem, but also are closely related to military operations in the sea. The purpose of this study is to suggest which model is more suitable for the field of water temperature prediction by attempting short-term water temperature prediction through various prediction models based on deep learning technology. The data used for prediction are water temperature data from the East Sea (Goseong, Yangyang, Gangneung, and Yeongdeok) from 2016 to 2020, which were observed through marine observation by the National Fisheries Research Institute. In addition, we use Long Short-Term Memory (LSTM), Bidirectional LSTM, and Gated Recurrent Unit (GRU) techniques that show excellent performance in predicting time series data as models for prediction. While the previous study used only LSTM, in this study, the prediction accuracy of each technique and the performance time were compared by applying various techniques in addition to LSTM. As a result of the study, it was confirmed that Bidirectional LSTM and GRU techniques had the least error between actual and predicted values at all observation points based on 1 hour prediction, and GRU was the fastest in learning time. Through this, it was confirmed that a method using Bidirectional LSTM was required for water temperature prediction to improve accuracy while reducing prediction errors. In areas that require real-time prediction in addition to accuracy, such as anti-submarine operations, it is judged that the method of using the GRU technique will be more appropriate.
Keywords
LSTM; Bidirectional LSTM; GRU; Prediction; Sea water temperature; Submarine; Deep-learning;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
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