Banks and stores use satellites for credit card transmission and verification. They can provide desktop video conference. We can have meetings at home or office with other people who are in another city or country. Satellites are used to provide wireless communication for the cellular phones, receivers on ships at sea, and planes in air. They can overcome terrestrial difficulties and therefore being used widely by different countries for disaster recovery.
Satellites play a more and more important role in the development of the society.
It is hard to imagine a modern life without satellites. This book will provide you some basic knowledge of satellite communications. The History of Satellites You may wander when the human beings began their studies of the space and to build satellites. This chapter will talk about the history of satellites development. This chapter can answer most of your questions on how satellites work.