一种基于自注意力机制的土壤水分降尺度方法

By employing a deep learning framework based on self-attention mechanism and multi-scale convolutional feature extraction, the shortcomings of remote sensing soil moisture downscaling methods in feature representation and spatial dependency modeling are addressed. This achieves high-precision spatial refinement of soil moisture images, improving prediction accuracy and information fusion efficiency in complex terrain areas.

CN121074670BActive Publication Date: 2026-07-17JIANGXI PROVINCIAL LAND & SPACE SURVEY & PLANNING RES INST
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGXI PROVINCIAL LAND & SPACE SURVEY & PLANNING RES INST
Filing Date
2025-09-04
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing remote sensing soil moisture downscaling methods are insufficient in terms of feature representation ability, spatial dependency modeling, and multi-source data fusion, making it difficult to meet the requirements for high-precision and high-resolution spatial distribution of soil moisture, especially in complex terrain areas where the prediction effect is poor.

Method used

We employ a deep learning framework based on self-attention mechanism, combining multi-scale convolutional feature extraction, cross-attention fusion, and Transformer encoder to construct an end-to-end soil moisture downscaling network, achieving high-precision spatial refinement of low-resolution soil moisture images.

Benefits of technology

It significantly improves the model's prediction accuracy and spatial resolution in complex terrain areas, enhances the fusion efficiency and prediction accuracy of multi-source information, and outputs high-resolution, structurally clear, and detail-rich soil moisture images.

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Abstract

本发明涉及遥感影像处理与地表水文信息获取领域,提出了一种基于自注意力机制的土壤水分降尺度方法,用于实现低分辨率土壤水分图的高精度空间细化预测。该方法充分融合多源高分辨率遥感因子,构建具备远程依赖建模能力的端到端框架。该方法利用多尺度卷积提取辅助因子的多层次空间特征,并以低分辨率土壤水分特征作为查询向量,高分辨率辅助因子作为键 / 值向量,引入交叉注意力融合模块增强特征。再通过Transformer编码器建模空间上下文与远程依赖。最后通过浅层卷积解码器生成高分辨率土壤水分预测图。实验证明,本发明方法相较现有主流方法,在土壤水分降尺度任务中表现出更优的精度与鲁棒性,具备良好的应用潜力。
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Citation Information

Patent Citations

  • CN112989286A

  • CN120411699A