RF and Optical Communications for Small Satellites

Abstract

All satellites require communication links. This chapter compares the use of radio frequency (RF) with optical links for small satellites. Even in the case of small satellites, free space optical (FSO) links now offer very useful options. FSO communications have some unique advantages and disadvantages compared to RF satcom. The latter will always have a role, but for throughput, security, and licence-free operation, FSO communications are increasingly worth considering. This chapter provides an overview of these two options, making comparisons where possible. The last section reviews some recent developments in both areas.