BACKGROUND All contemporary models of perception of locomotor heading from optic flow (the characteristic patterns of retinal motion that result from self-movement) begin with relative motion. Therefore it would be expected that an impairment on perception of relative motion should impact on the ability to judge heading and other 3D motion tasks. MATERIAL AND METHODS We report two patients wi...

A technique for satellite formation flying modelling in LEO is applied at L2. Analytical solutions to the equations of motion of a hub satellite relative to L2 are used to define a halo reference orbit. An expression for the gravity gradient is obtained at the hub and the linearised equations of motion of the mirror satellites relative to the hub are derived. The relative motion model is implem...

In this paper, first the optimal trajectories are defined by a fixed end-time, continuous-thrust trajectory which minimizes terminal cost at end of an inter-planetary appending multi-body dynamic equations defining motion set Lagrange multipliers or co-states. The solution these co-states and for end-time obtained solving two-point boundary value problem along with steering control law, is used...