Application of a Hybrid Genetic Algorithm in Spacecraft Optimal Rendezvous
Xingsuo He · Flight Dynamics · 2008
The model of rendezvous between two spacecrafts using two impulses is derived.Based on that,the optimal rendezvous index considering fuel and time is constructed,and aiming at the weak local searching ability of a simple genetic algorithm,a hybrid genetic algorithm has been put forwart based on the combination of the steepest decent algorithm and genetic algorithm(GA),whose descend direction is obtained by the optimal information that owned by the worst individual in each gap.The numerical calculation shows that the hybrid GA can accelerate the convergence of the algorithm,and has well optimal capability and function adaptive abilities.Finally a simulation of rendezvous between coplanar circular orbits using two impulses is carried out,and the result shows the design of the hybrid genetic algorithm is successful.