Introduction
摘要
Satellite technologies play a crucial role in modern society. They enable critical infrastructures, provide information about global-scale things happening around us, and even provide information about the great mysteries of universe and questions such as how life arose. Satellite systems are based on artificial satellites that have been placed into orbit by humans. This book gives the reader a basic understanding of how these satellites work, how they are placed in orbit, what kinds of applications they enable, and how satellite communications systems are designed and built to perform their mission.