Here you will get every small details of satellite communication.

1. APPLICATIONS OF SATELLITE
COMMUNICATION
BY AYUSH JAIN
HELPING FACULTY: DIVYANGANA GANDHI MA’AM

2. ABSTRACT
• Since Sputnik 1 has been launched from Soviet’s in 1957, thousands of satellites have been launches
into orbit around the Earth.
• Satellites are being used for a large number of purposes. Many types including military and civilian
Earth observation satellites, communication satellites, navigation satellites and weather satellites.
• We’re going to observe the main usages of satellites in world in this presentation.

3. SPUTNIK 1

4. CONTENTS
1. Abstract
2. Contents
3. Satellites: At-a-Glance
4. Satellites Applications
5. Communication Satellites
6. VSAT Systems
7. Broadcast services
8. Conclusion
9. References

5. SATELLITES: AT-A-GLANCE
• A satellite is an artificial object which has been intentionally placed into orbit. Such objects are
sometimes called artificial satellites to distinguish them from natural satellites such as the Moon.
• World's first satellite

7. SATELLITES: AT-A-GLANCE
• Space stations and human spacecraft in orbit are also satellites.
• About 6600 satellites have been launched. The latest estimates are that 3600 remain in the orbit. Of
those , about 1000 are operational(active).

8. SATELLITES: AT-A-GLANCE
• Satellites' three basic non-military satellite services:
• Fixed satellites services
• Mobile satellites services
• Scientific research satellites

9. SATELLITE APPLICATION
• Fixed satellites services
• Handle hundreds of billions of voice, data, and video transmission tasks across all countries and continents
between certain points on the earths surface.

10. SATELLITE APPLICATION
• Mobile satellite systems
• Help connect remote regions, vehicles, signs, people and aircraft to other parts of the mobiles world and/or
stationary communications units, in addition to serving as navigation systems.

11. SATELLITE APPLICATION
• Scientific research satellites(commercial and non-commercial)
• Scientific research satellites provide meteorological information, land survey data, amateur radio, and other
different scientific research applications such as earth science, marine science and atmospheric research.

12. VSAT SYSTEMS
• A very small aperture terminal (VSAT) is a two-way ground station that transmits and receives data from
satellites. A VSAT is less than three meters tall and is capable of both narrow and broadband data to
satellites in orbit in real-time. The data can then be redirected to other remote terminals or hubs
around the planet.

14. • A very small aperture terminal (VSAT) is a data transmission technology used for many types of data
management and in high-frequency trading.
• VSAT can be used in place of a large physical network as it bounces the signal from satellites instead of
being transported through physical means like an ethernet connection.
• Because the signal needs to bounce, there can be a latency issue that wouldn't exist with a physical
network. However, most users feel this is the price you pay for remote access and less infrastructure
and consider it a fair trade.
• Weather can adversely impact the efficacy of a VSAT network.

15. WORKING OF VSAT
• VSAT networks have a number of commercial applications, including, perhaps most notably, enterprise
resource planning (ERP). The use of VSAT to track inventory was one of the many innovations Walmart
pioneered in retail to effectively manage its vast inventory in real-time and reduce delivery costs
between the warehouse and stores.
• Combined with the hub system of inventory storage, VSAT allowed Walmart to stock its stores more
precisely and reduce how many times a product had to move between locations before being sold.
Other manufacturers use VSAT to relay orders, check production figures in real-time as well as other
functions that are otherwise handled over a wired network.

16. VSAT IN NSE
• The National Stock Exchange (NSE) of India has one of the largest VSAT networks in the world and offers
it as one of its connectivity options. VSAT provided the NSE with a way to offer access in areas where
wired options are limited. With the exception of the occasional sun outage due to solar radiation
distorting signals from the satellite, the VSAT network has held up.

17. VSAT IN FINACE
• A Very Small Aperture Terminal is a technology that is used to manage data while undertaking high-
frequency trading activities. A VSAT is essentially a data transmission technology that uses a
telecommunication ground station. It is used while trading because it efficiently transmits and redirects
data in real time.
• A VSAT is a small station, usually around three meters tall, and it receives and transmits data with the
help of a satellite. It can transmit two types of signals to satellites in the orbit of the earth: narrow
signals and broadband signals.

18. 1. Narrowband data
Data that entails details about the point of sale transactions. Examples of such transactions include credit
card transactions, supervisory control, polling, data acquisition data, or radio-frequency identification data.
2. Broadband data
Data that is essential for providing satellite internet access at locations that are not easily accessible.
Examples of the same include Voice over Internet Protocol (VoIP) or video.

19. ADVANTAGES AND DISADVANTAGES OF VSATS.

20. ADVANTAGES
1. Eliminates structural issues in data transmission
VSATs are commonly used instead of large physical networks. This is because VSATs bounce the signal
via an orbital satellite, as opposed to transporting that data through a physical medium, such as an
Ethernet connections.
2. Easy to deploy
The biggest advantage of VSAT networks is that they are easy to deploy. The ground station essentially
communicates with satellites, which then redirects the data to several hubs at different locations on
the earth. There are lesser infrastructural requirements for setting up access to services even at
remote locations. Examples of such remote sites include exploratory drilling sites, where there is a
need for relaying drill logs back to headquarters on a daily basis.

21. 3. Function independently of local telecoms networks
VSAT networks also function independently of local telecommunications networks. This makes VSATs
an ideal system for reducing the risk of business recovery and for setting up backup systems. A backup
System is used in cases where the wired network goes bust. Thus, the business can still continue
operating smoothly by means of the VSAT network.

22. DISADVANTAGES
1. Latency
The biggest issue that arises while using VSATs is latency. Latency occurs because it takes a substantial
amount of time for the data to reach the satellite dish and, subsequently, the station. This is because
one part of the system is located in the geosynchronous orbit of the earth.

23. BROADCASTING SERVICES
• Broadcasting service means a radiocommunication service in which the transmissions are intended for
direct reception by the general public. This service may include sound transmissions, television
transmissions or other types of transmission.

24. • The signals, which travel in straight lines, could not bend around the round Earth to reach a destination
far way.
• Because satellites are in orbit, the signals can be sent simultaneous into space and then redirected to
another into space and then another satellites redirected or directly to their destination.

25. COMMUNICATION SATELLITES
• Communication satellites allow radio, Television, and telephone transmission to be sent live anywhere
in the world. Before satellites, transmissions and were difficult or impossible at long distances.

26. APPLICATION OF COMMUNICATIONS SATELLITES
1. Telephone
2. Television
3. Digital Cinema
4. Radio
5. Internet access
6. Military

27. CONCLUSION
• Satellite systems are not aimed to replace terrestrial system but at complementing them.

28. REFERENCES
• https://corporatefinanceinstitute.com/resources/knowledge/other/vsat/
• https://www.investopedia.com/terms/v/vsat.asp
• https://ieeexplore.ieee.org/document/5935265
• https://en.wikipedia.org/wiki/Broadcasting-satellite_service
• https://www.slideshare.net/Serhanzbey/satellite-applications-32390623

29. THANK YOU