Optimal Trajectory Determination and Mission Design for Asteroid/Deep-Space Exploration via Multibody Gravity Assist Maneuvers

Figure 4

Four selection schemes for choosing parent chromosomes. A randomized value in the range (0, 1) is chosen on the -axis and solution associated with the corresponding fitness value is used as a parent. The most extreme bias gives solutions in the bottom half of the ranking a combined chance of less than 10% of being selected.