Q 2.13 How do satellites communicate with the Earth?
Satellites communicate with the Earth over radio links at frequencies assigned by the operator. These frequencies are in line with…
Q 2.14 How many functional satellites are there in orbit?
According to 2016 Satellite Industry Organization (www.sia.org), there were a total of nearly 1486 operational satellites at the end of…
Q 2.15 What are the main sub-systems of a satellite?
A communication satellite consists of two functional units – payload and bus. The function of the payload is to fulfill…
Q 2.16 How can we categories different types of satellites?
Satellites may be categorized according to their orbit, weight, function, or payload. By orbitLow Earth orbit (LEO), medium Earth orbit…
Q 2.17 How are satellites maintained?
The Telemetry Tracking and Command (TT & C) system supports functions of satellite maintenance and management. These functions, separate to…
Q 2.19 What are the functions of satellite command system?
A communication satellite consists of two functional units – payload and bus. The function of the payload is to fulfill…
Q 2.20 How to get information about real-time satellite location?
This information is available from the satellite operator. Many operators provide orbital parameters online. The user must convert these parameters…
Q 2.21 Give a list of satellites launched recently
These are available on dedicated websites. For example see: http://www.n2yo.com/ (Retrieved November 5, 2015)
Q 2.22 Give a brief history of communication satellite?
The satellite era began in October 1957 with the launch of SPUTNIK-1, a Russian satellite. This was followed by launch…
Q 2.23 How are satellites named? Give examples.
There are no set rules for naming a satellite, a space probe or a launch vehicle – much as for…