دورية أكاديمية
An improvement in accuracy and spatial resolution of the pattern-matching sea ice drift from SAR imagery
| العنوان: | An improvement in accuracy and spatial resolution of the pattern-matching sea ice drift from SAR imagery |
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| المؤلفون: | Xue Wang, Zhuoqi Chen, Yan Fang, Ruirui Wang, Chaoyue Li, Gang Li, Fengming Hui, Huabing Huang, Xiao Cheng |
| المصدر: | International Journal of Digital Earth, Vol 16, Iss 2, Pp 4073-4094 (2023) |
| بيانات النشر: | Taylor & Francis Group, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Mathematical geography. Cartography |
| مصطلحات موضوعية: | sea ice drift, pattern matching, sar, feature tracking, fusion, Mathematical geography. Cartography, GA1-1776 |
| الوصف: | Sea ice drift is a crucial parameter for sea ice flux, atmospheric and ocean circulation, and ship navigation. Pattern matching is widely used to retrieve sea ice drift from Synthetic Aperture Radar (SAR) data, but it often yields mismatched vectors and coarse spatial resolution. This study presents a framework to enhance the spatial resolution and accuracy of pattern-matching sea ice drift derived from SAR images. The framework employs the Accelerated-KAZE feature extraction method and Brute-Force feature matcher to extract feature-tracking sea ice drift vectors from SAR data, with mismatched vectors subsequently removed. The pattern-matching vectors are then refined by fusing with these feature-tracking vectors, using a Co-Kriging algorithm. Using the sea ice drift product from the Technical University of Denmark space as the pattern-matching vector field for refinement, the framework's effectiveness is evaluated by comparing the refined vectors with buoy displacements and pattern-matching vectors across five selected regions. Results show a reduction in velocity and direction root mean square error (RMSE) by 0.47 km/d (22%) and 4.97° (28%), respectively, and an enhanced spatial resolution from 10 km to 1 km. The findings demonstrate the framework's success in improving the accuracy and resolution of pattern-matching sea ice drift from SAR imagery. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1753-8947 1753-8955 17538947 |
| العلاقة: | https://doaj.org/toc/1753-8947Test; https://doaj.org/toc/1753-8955Test |
| DOI: | 10.1080/17538947.2023.2264918 |
| الوصول الحر: | https://doaj.org/article/d5c7b9ea96cb4ef6bff75fa36404ed2eTest |
| رقم الانضمام: | edsdoj.5c7b9ea96cb4ef6bff75fa36404ed2e |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 17538947 17538955 |
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| DOI: | 10.1080/17538947.2023.2264918 |