I. Introduction
Nano and pico satellites in a low earth orbit (LEO) offer a cheaper alternative and feature faster development cycles than traditional space missions. Such low-budget missions give access to space science for education and research at universities [1], [2]. For these small satellites often the term “CubeSat” is used because of their typical form factor. In the last years several nano and pico satellites have been launched [3]. Further recent examples can be found in [4]–[6].