Improvement of Safety Assessment by UsingTOPAZ Process for UAV Conflict Resolution

To improve the safety of UAV operating in airspace, TOPAZ method is introduced for the safety assessment of UAV flight conflict resolution technology. Firstly, the conflict scenes including 45°, 90° crossing encounter for single-aircraft and simultaneous crossing encounter for doubleaircraft are added to construct the airspace operation environment for UAV. Then a typical UAV conflict resolution algorithm (a modified GA algorithm) is selected as the safety assessment object and is systematically evaluated according to the process of TOPAZ. Finally, a dynamic heuristic factor is introduced to modify the selected algorithm and validate the improvement of safety level of the algorithm by TOPAZ.