Definition?

Satellite communications is the transmission of information from one location to another using a communications satellite orbiting the Earth. Without this, it wouldn't be possible to watch the English Premier League with friends every weekend. A communications satellite is an artificial satellite that transmits a signal via a transponder, creating a channel between the transmitter and receiver at various points on Earth.

Telephone, radio, television, Internet, and military applications use satellite communications. Believe it or not, there are more than 2,000 artificial satellites flying through space.

What does a Communications Satellite mean?

A communications satellite is a type of artificial satellite placed in orbit around the Earth for the purpose of sending and receiving communications data between a source and a destination. It is used to provide data transmission and relay services for television, radio, telecommunications, weather services, and the Internet.

Need for Satellite Communications:

We know that there are different ways of communication and that the propagation of these waves can take place in different ways. Earth wave propagation and airwave propagation are two ways to transmit information over a certain distance. The maximum distance they travel is 1500 km, which was overcome thanks to the introduction of satellite communications.

The Initial Satellite for Communications?

The American Telephone and Telegraph Company (AT&T) built Telstar 1, the first operational communications satellite in history, which was launched on July 10, 1962.

How does Communication via Satellite Operate?

Communications satellites function as space mirrors, enabling the transmission of signals from one side of the Earth to the other, including television, radio, and Internet data. The operation of satellite communications can be broken down into three parts. Like this:

backlink transceivers
Link down

Consider TV transmissions as an example. An Earth-based ground station transmits a television signal to a satellite in the initial phase of the process. Uplinking is the term for this procedure.

Transponders like radios and amplifiers are used in the second phase.

Advantages of Satellite Communication:

The benefits of satellite communications include:

Installing the circuits is simple.
The elasticity of these chains is excellent.
With the help of satellite communications, you can reach all corners of the earth.
The user has full control over the network.

Disadvantages of Satellite Communication:

The disadvantages of satellite communications include:

The initial costs are high.
There is a possibility of frequencies being blocked.
Propagation and interference.

Application of Satellite Communications

telephone
A television
Digital cinema
Transfer
Radio amateur
Internet access
Army
Disaster management

FAQ:

Q1: What are the two main components of satellite communications?

The two main components of satellite communications are:

The ground segment includes fixed or mobile transmitting, receiving, and auxiliary equipment.
Space Segment: The satellite is known as the space segment. There are three main blocks: the power system, the satellite, the telemetry control, and the transponder. The main role of the space segment is the reflection of electronic signals.
Q2: Name the countries that have their own satellites.

Only twelve countries have their own satellites. Some of them are listed below:

India – Rohini D1
Japan – Osumi
China – Dong Fan Hong I
Q3:What is a space station?

A space station is an artificial structure designed to allow people to live and work in space.

Q4:What are Kepler's three laws?

Below are Kepler's three laws:

Kepler's First Law states that each planet orbits the sun in an elliptical orbit, and the sun is one of its focuses.
Kepler's second law states that in an equal period of time, the area covered by a satellite is equal to the center of the Earth.
Kepler's third law states that the square of the periodic time of the orbit is proportional to the cube of the average distance between two bodies.
Q5:List the factors that influence the carrier-to-noise ratio of a satellite.

Below are three factors that influence the

Bandwidth
Free space for path losses
Effective power radiated from the isotropic