The history of satellite development is at an inflection point: around half of all countries have
made and launched satellites, while another half has not. In this context, the time appears …

Radio spectrum access is important for terrestrial wireless networks, commercial earth
observations and terrestrial radio astronomy observations. The services offered by terrestrial …

It is important to understand the fundamentals and devices behind dynamics and controls
before venturing into the calculations and data analysis. This paper starts with an …