Free space optics (FSO) refers to optical wireless communications in outdoor environments. The aim of this article is analyze the role that FSO envisaged play creation next-generation satellite networks. To begin with, reader introduced types links and functionalities a basic system. Next, comparison radio frequency (RF) technologies for intersatellite (ISLs) provided, including between RF when...

We exploit free-space interactions between electron beams and tailored light fields to imprint on-demand phase profiles on the wave functions. Through rigorous semiclassical theory involving a quantum description of electrons, we show that monochromatic optical focused in vacuum can be used correct beam aberrations produce selected focal shapes. Stimulated elastic Compton scattering is exploite...

In this paper, a new online robot motion planner is developed for systematically exploring unknown environ¬ments by intelligent mobile robots in real-time applications. The algorithm takes advantage of sensory data to find an obstacle-free start-to-goal path. It does so by online calculation of the Generalized Voronoi Graph (GVG) of the free space, and utilizing a combination of depth-first an...