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A study of the feasibility of using KOMPSAT-5 SAR data to map sea ice in the Chukchi Sea in late summer

Cited 1 time in scopus
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Title
A study of the feasibility of using KOMPSAT-5 SAR data to map sea ice in the Chukchi Sea in late summer
Other Titles
여름철 척치해 해빙 지도화를 위한 아리랑 5호 영상레이더 활용에 관한 연구
Authors
Han, Hyangsun
Choi, Hae-Jin
Chae, Tae-Byeong
Kim, Hyun-cheol
Hong, Sang-Hoon
Subject
Imaging Science & Photographic Technology
Keywords
Arctic; KOMPSAT-5; SAR; sea ice; sea ice concentration; Remote Sensing
Issue Date
2017
Citation
Han, Hyangsun, et al. 2017. "A study of the feasibility of using KOMPSAT-5 SAR data to map sea ice in the Chukchi Sea in late summer". REMOTE SENSING LETTERS, 8(5): 468-477.
Abstract
In this study, a sea ice mapping model based on Random Forest (RF), a rule-based machine learning approach, has been developed for the Korea Multi-Purpose Satellite-5 (KOMPSAT-5) Synthetic Aperture Radar (SAR) data in Enhanced Wide swath mode obtained from 6 August to 9 September 2015 in the Chukchi Sea. A total of 12 texture features derived from backscattering intensity and the gray-level co-occurrence matrix were used as input variables for sea ice mapping. The RF model produced a sea ice map with a grid spacing of 125 m, demonstrating excellent performance in the classification of sea ice and open water with an overall accuracy of 99.2% and a kappa coefficient of 98.5%. Sea ice concentration (SIC) retrieved from the RF-derived sea ice maps was compared with that from ice charts. The mean and median values of the differences between the SICs derived from the RF model and the ice charts were ?8.85% and ?8.38%, respectively. Such difference was attributed to both the uncertainty in the ice charts and classification error of the RF model.
URI
http://repository.kopri.re.kr/handle/201206/6373
DOI
http://dx.doi.org/10.1080/2150704X.2017.1285501
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