Task Scheduling Method of Revisit Tasks for Satellite Constellation Towards Wildfire Management

Wildfires spread quickly and require frequent satellite observations for early detection and effective management. Large Earth observation satellite constellations (EOSC) can meet this need with their broad coverage and diverse spectral capabilities. However, designing an efficient scheduling strategy for revisit tasks remains challenging due to the complex time-coupled requirements and the multi-objective nature of large-scale EOSC operations. To address this, we introduce a time-driven multi-objective (TDMO) scheduling method. The key innovation of TDMO lies in its explicit integration of revisit intervals and a time-driven mechanism, ensuring consistent observation frequencies and improved coordination of resources. Experiments across different wildfire scenarios show that TDMO effectively enhances scheduling efficiency and monitoring performance, offering a novel solution for dynamic and complex revisit scheduling in wildfire management.