Satellite communication has advanced significantly over time. Early satellites operated passively, simply bouncing signals back to Earth, but active communication satellites soon relayed signals between ground stations. Commercial satellite systems like Intelsat and Inmarsat launched in the 1960s-70s, providing thousands of voice circuits and global coverage. Recent trends include frequency reuse, multiple spot beams from each satellite, laser communication, and networks of small satellites in low Earth orbit. Satellite communication now plays a vital role in broadcasting, weather monitoring, and connecting the global village.

1. Govt. Engineering College,
Aurangabad
Submitted By :--
Rasal Abhijeet Dharmaraj
(BE12F04F043)
Guided By :-- Jain Ma’am
Advances In Satellite Communication

2. Content
• Introduction
• Development
• Recent Trends

3. Introduction
• A satellite communication is an artificial satellite that relays and
amplifies through the use of a transponder between a source and a
receiver.
• Satellite communication has served mankind in many ways.
• Transition from point - point to multipoint - multipoint.
• The latest development is the use of networks of small satellites in low
earth orbits.

4. • In this present era, communication plays a vital role.
• A satellite receives a microwave signal from a ground station on the
earth then amplifies and retransmits the signal back to a receiving station
at a different frequency.
EARTH
Ground
Station
Transmitting
Ground
Station
receiving
Satellite

5. Development
• First communications satellites were designed to operate in a passive
mode.
• Echo 1 launched by the US in 1960 and Echo 2 in 1964.
• Score launched by the US in 1958, was the first active
communications satellite.

6.  Commercial
• Foundation of the Communications Satellite Corporation
(COMSAT) in 1963.
• International Telecommunications Satellite Organization
(INTELSAT) was formed in 1964.
• Early Bird in 1965.
• The first of the Intelsat 4s provided 4,000 voice circuits.
• In the early 2000s, INTELSAT had 21 satellites in orbit, providing the
world's most extensive telecommunications system.

7.  Services
• Broadcasters use data from meteorological satellites to predict weather
and to broadcast storm warnings when necessary.
• Collect meteorological and infrared information about the atmosphere
and the ocean.
• Global village.
• Television Infrared Observation Satellite (TIROS) 1 in 1960.
• International Mobile Satellite Organization (INMARSAT) in 1979.

8. Recent Trends
• Frequency reuse
• Multiple spot beam
• Laser beam
• Network of small satellite in low orbit.

9. Thank you…