Optimizing Cover Mapping in Coastal Areas Using Swin Transformer-Based Multisensor Remote Sensing Satellite Data Fusion

The vital ecosystem services of coastal areas support biodiversity while storing carbon, protecting coasts, and conserving habitat for coastal species. Accurate mapping and monitoring of coastal ecosystems are essential for conservation and sustainable management, as these ecosystems face growing threats from human activities, sea-level rise, and climate change. A supervised Swin Transformer-based deep learning method using different hyperspectral datasets serves as the proposed algorithm for coastal cover mapping. The data requires preprocessing procedures that combine feature learning with normalization and dimensionality reduction to improve both spectral and spatial feature extraction. The Swin Transformer model extracts hierarchical features through its shifted window attention mechanisms, which combine local and global information. Through spectral-spatial fusion, the model utilizes the specific characteristics of each data source to enhance feature representation, enabling better discrimination of coastal area, ship detection, and large-scale coastal mapping. The integration of high-resolution spatial data with broader spectral information through multisource data methods supports robust classification and object detection. The algorithm achieves 92.4% overall classification accuracy through cross-validation and hyperparameter optimization while minimizing overfitting. It specifically enhances coastal area identification (>91%) and ship object detection (>90%). The analysis demonstrates that combining deep learning methods with diverse remote sensing data sources enables effective and precise mapping of coastal ecosystems.

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