Table 2. Comparing approaches in case study

MILP [13] GA [11]
Imaging missions 5 50
Satellites 3 5
Resources and constraints Memory capacity, visibility, data transmission rate, imaging mission sequence Memory capacity, visibility, data transmission rate, imaging mission sequence, power consumption and restoring
Results Maximize satellite resource utilization Maximize user benefits in various resource constrains, operation modes, and missions
Algorithm complexity High computational complexity, suitable for small-scale problems Low computational complexity, suitable for large-scale simulations
Model applicability Model flexibility limited to linear models Can be applied and extended to nonlinear models, discrete spaces, etc.
Global optimality Guaranteed global optimal solution Able to approach near-optimal or global optimal solution