On-line trajectory optimization including moving threats and targets

Different methods of optimizing terrain following trajectories have been investigated as an extension of earlier reduced order formulations. This paper incorporates wind, moving threats - such as other aircraft to be avoided - and a moving target - such as a rendezvous situation - into the basic constant velocity formulation. Consequently, this will allow a more realistic model to be simulated. In addition, changing information, such as a threat appearing during flight, are considered. The reduced order formulation results in a system of four differential equations with two unknown initial conditions. The solution is found with the use of a genetic algorithm in conjunction with a conjugate-gradient numerical search method.