Modeling of the tracking system components of the laser satellite communication systems

High data rate of laser communication systems should be matched by wide operational bandwidth of beam positioning. This could be achieved by the application of non-mechanical beam steering technologies utilizing acousto-optic phenomena. Major components of acousto-optic beam steering systems, a Bragg cell and a quadrant detector, are subjected to comprehensive laboratory testing and characterization as components of a control system. Mathematical and computer simulation model of the entire steering system, addressing system dynamics, cross-coupling of azimuth and elevation channels, and nonlinearity, and facilitating synthesis of advanced control laws, is developed.