## 5 Experiment Results
### Dataset Detail and Scenario Description  
To ensure the feasibility and scalability of the proposed task offloading and resource management framework, we make the following assumptions regarding the satellite nodes and datasets. **Assumption 4**. : _The computational, storage, and bandwidth resources of satellite nodes are assumed to be sufficient to handle the tasks assigned to them. Specifically, for each satellite node \(\mathcal{S}_{i}\), the total available resources are denoted as \(c_{i}\), \(s_{i}\), and \(b_{i}\). These resources are assumed to be fixed and limited._  
**Assumption 5**. : _All satellites operate normally throughout the duration of the scenario without any failures. The network communication is stable, and there will be no interruptions in visibility periods._  
The dataset used in the experiments encompasses satellite orbital parameters, resource configurations, and task demand data, which are crucial for multi-satellite collaborative computing in remote sensing missions. The satellite orbital parameters include _semi_major_axis_, _eccentricity_, _inclination_, _argument_of_perigee_, _longitude_of_ascending_node_, and _mean_anomaly_. These parameters are sourced from the CelesTrak database (CelesTrak, \"Two-Line Element Set (TLE) Satellite Catalog\", [[https://www.celestrak.com/NORAD/elements/](https://www.celestrak.com/NORAD/elements/)]([https://www.celestrak.com/NORAD/elements/](https://www.celestrak.com/NORAD/elements/)), accessed on 4 December 2024), and are used to accurately simulate satellite trajectories and the communication contact windows between satellites. The CSTK platform provides robust orbital simulation and mission planning functionalities, enabling the simulation of satellite movement trajectories and inter-satellite communication links over different time periods. The platform also provides precise position and velocity information for each satellite during the simulation period, which allows for the calculation of communication delays and available bandwidth between  
Figure 2: Main simulation interface of the CSTK platform. satellites. This information is essential for implementing the task scheduling and resource optimization model. The resource configurations of satellite nodes include _computational_capacity_ (Flops), _storage_capacity_ (GB), _bandwidth_ (Gbps), and _processing_capability_ coefficient. These resource parameters are set based on the specifications of the European Space Agency's Sentinel satellites (European Space Agency, \"Sentinel Missions\", [[https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-1](https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-1)]([https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-1](https://www.esa.int/Applications/Observing_the_Earth/Copernicus/Sentinel-1)), accessed on 6 December 2024), where _computational_capacity_ ranges from 100 to 1000 MIPS, _storage_capacity_ spans from 4 to 64 GB, _bandwidth_ ranges from 1 to 500 Mbps, and the _processing_capability_ coefficient lies between 0 and 1. These parameters reflect each satellite node's computational, storage, and communication capabilities during task execution. Task demand parameters include _task_priority_ (priority level, from 1 to 10), _data_size_ (data size, from 10 MB to 2000 MB), and _execution_time_ (execution time, from 1 to 120 min). These parameters are manually selected based on actual remote sensing mission areas, with task size estimated according to the target area and task priority set according to user-specific criteria. The simulation scenario's time span is defined by _scenario_start_time_ and _scenario_end_time_. For instance, the simulation time is from 00:00 UTC on 3 September 2023, to 23:59 UTC on 15 September 2023. Based on this simulation scenario, task demand parameters are defined, and 12 datasets with varying numbers of satellites are constructed.