Related Experiment Video
Updated: Jun 28, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Link budget analysis of bi-directional LEO and GEO optical feeder links advancing the beam wander model's accuracy
Carla Cantore1, Davide Monopoli2, Angelo Altamura3
1Department of Electrical and Information Engineering, Polytechnic University of Bari, 70126, Bari, Italy. c.cantore@phd.poliba.it.
Abstract:
The telecommunications of the future rely on the concept of a three-dimensional architecture able to integrate terrestrial and non-terrestrial networks with the goal to ensure a reliable and high-speed connectivity to users located anywhere. In this context, free space optical communications constitute a candidate technology for feeder links, thanks to their advantages in terms of bandwidth and achievable data rates. Nonetheless, due to the propagation impediments encountered by an optical beam travelling through atmosphere, flexible and accurate instruments able to support the design of optical feeder links are needed. Therefore, in this paper a link budget numerical tool able to meet these requirements is presented and the link budget analysis for real optical feeder links is performed demonstrating its prediction accuracy by means of the comparison with experimental results for both low Earth orbit and geostationary Earth orbit based configurations. Finally, the limits of the conventional beam wander model are analyzed and overcome.
Related Concept Videos
Bewley Lattice Diagram
Beams with Unsymmetric Loadings
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
Elastic Curve from the Load Distribution
For all beams, the analysis of the beam's reaction to distributed loads begins by understanding the relationship between a beam's load and the resulting shear forces and bending moments.
Adjusting a Traverse
Shear on the Horizontal Face of a Beam Element
Errors in Global Positioning System

