Gujarat Class 10 Answered
How are artificial satellites useful in communication?
Asked by Jiyapatel793 | 10 Jan, 2019, 11:37: AM
Expert Answer
In telecommunications, the use of artificial satellites help us to provide communication links between various points on Earth.
Satellite communications play a vital role in the global telecommunications system. Approximately 2,000 artificial satellites
orbiting Earth relay analog and digital signals carrying voice, video, and data to and from one or many locations worldwide.
Satellite communication has two main components: the ground segment, which consists of fixed or mobile transmission,
reception, and ancillary equipment, and the space segment, which primarily is the satellite itself. A typical satellite link involves
the transmission or uplinking of a signal from an Earth station to a satellite. The satellite then receives and amplifies the signal
and retransmits it back to Earth, where it is received and reamplified by Earth stations and terminals.
Satellite receivers on the ground include direct-to-home (DTH) satellite equipment, mobile reception equipment in aircraft,
satellite telephones, and handheld devices. Advances in satellite technology have given rise to a healthy satellite services sector
that provides various services to broadcasters, Internet service providers (ISPs), governments, the military, and other sectors.
There are three types of communication services that satellites provide: telecommunications, broadcasting, and data communications.
Telecommunication services include telephone calls and services provided to telephone companies,
as well as wireless, mobile, and cellular network providers.
Broadcasting services include radio and television delivered directly to the consumer and mobile broadcasting services.
Broadcasting services include radio and television delivered directly to the consumer and mobile broadcasting services.
DTH, or satellite television services are received directly by households. Cable and network programming is delivered to
local stations and affiliates largely via satellite. Satellites also play an important role in delivering programming to cell phones
and other mobile devices, such as personal digital assistants and laptops.
Data communications involve the transfer of data from one point to another. Corporations and organizations that require
Data communications involve the transfer of data from one point to another. Corporations and organizations that require
financial and other information to be exchanged between their various locations use satellites to facilitate the transfer of data
through the use of very small-aperture terminal (VSAT) networks. With the growth of the Internet, a significant amount of Internet
traffic goes through satellites, making ISPs one of the largest customers for satellite services.
Satellite communications technology is often used during natural disasters and emergencies when land-based communication
Satellite communications technology is often used during natural disasters and emergencies when land-based communication
services are down. Mobile satellite equipment can be deployed to disaster areas to provide emergency communication services.
Answered by Thiyagarajan K | 10 Jan, 2019, 04:28: PM
Gujarat 10 - Science
Asked by vikikansagara | 15 Jan, 2019, 10:30: PM
ANSWERED BY EXPERTGujarat 10 - Science
Asked by Jiyapatel793 | 10 Jan, 2019, 11:37: AM
ANSWERED BY EXPERT
