A vegetation phenology dynamic monitoring method based on multi-source data

By processing multi-source data through a multi-head self-attention mechanism and cosine similarity fusion technology, vegetation phenology parameter maps are generated, which solves the problems of accuracy and stability in existing vegetation phenology monitoring and achieves more accurate monitoring of vegetation growth dynamics.

CN122412985APending Publication Date: 2026-07-17MUDANJIANG NORMAL UNIV

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
MUDANJIANG NORMAL UNIV
Filing Date
2026-05-25
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies cannot efficiently and accurately generate vegetation phenological parameter maps, resulting in poor accuracy and stability of vegetation phenological monitoring, especially in terms of collaborative modeling of multi-source heterogeneous remote sensing data and embedding of vegetation growth physical mechanisms.

Method used

A multi-head self-attention mechanism is used to perform weighted summation on multi-source data. Combined with vegetation type weight and cosine similarity fusion technology, vegetation phenological parameter maps are generated, including parameters such as growing season length, yellowing period, and greening period.

Benefits of technology

It improves the accuracy and robustness of vegetation phenology monitoring, enables a better understanding of the intrinsic causal logic of plant growth, generates more accurate phenological parameter maps, and supports ecological impact assessment and management decisions.

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Abstract

本发明公开了一种基于多源数据的植被物候动态监测方法,获取研究区域在预设时间内的每个像元的多源数据后,确定修正后的第二物理参数、初始光谱特征和植被类型;多源数据包括Landsat光谱数据、MODIS光谱数据和包括有效积温和蒸气压亏损的第一物理参数;对第二物理参数进行加权求和处理,通过获取的植被类型权重对加权求和后的物理参数进行逐元素相乘,得到第四物理参数后,分别和初始光谱特征进行维度映射和特征提取,得到物理特征和目标光谱特征;计算两个特征之间的余弦相似度;基于余弦相似度将两个特征进行融合,基于融合特征和第二物理参数确定生长季长度、枯黄期的时间、返青期的时间和植被最大生长速率的时间来进行监测。
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