Laser Satellite Communication

1. Laser Satellite Communication

LASER SATELLITE
COMMUNICATION
PRISHCHEPOV M.V
RF25-35B

2. Plan

PLAN
• Introduction
• History
• Principle of action
• Conclusion

3. Introduction

INTRODUCTION
• What is it? A technology that uses lasers to transmit data
between satellites and Earth, or between satellites
themselves, offering a powerful alternative to traditional
radio waves.
• The Challenge: Traditional radio frequency (RF)
communication is facing a "spectrum crunch." It's
increasingly crowded, scarce, and limited in the amount of
data it can transmit.
• The Goal: To enable high-speed, secure, and reliable data
transmission for future technologies like 4K video
streaming from space, autonomous driving, and global
internet coverage.

4. History

HISTORY
• 1968: First Detection. The television camera of the Surveyor 7 lunar
lander successfully detected two argon lasers from Earth-based
observatories in Arizona and California.
• 1995: First Space Laser Link. Japan achieved the first successful lasercommunication link from space between the ETS-VI satellite and an
optical ground station in Tokyo, achieving 1 Mbit/s.
• 2001: First Intersatellite Link. The European Space Agency's Artemis
satellite established the world's first laser intersatellite link with the SPOT
4 satellite, achieving 50 Mbps across 40,000 km .
• 2013: Lunar Record. NASA's Lunar Laser Communication
Demonstration set a record, downloading data from the Moon at 622
Mbps—proving laser communication works over hundreds of thousands
of kilometers.
• 2022: Terabit Era. NASA's TBIRD mission demonstrated a 200 Gbps
downlink from a 300-mile orbit, representing a 100x increase over highperformance RF links

5. Principle of action

PRINCIPLE OF ACTION
• Modern Laser Com systems use a process of precise pointing
and modulation:
• Data Encoding (Modulation): Information is encoded onto a
laser beam by rapidly modulating its intensity or phase.
• Precision Pointing (ATP): Because the beam is very narrow, a
super-precise system (Acquisition, Tracking, and Pointing)
locks onto the target receiver, which could be a satellite
thousands of kilometers away.
• Transmission: The beam travels at the speed of light through
the vacuum of space.
• Reception and Decoding: A ground station or another
satellite's optical terminal receives the weak light signal,
amplifies it, and decodes the data.

6. Conclusion

CONCLUSION
• Laser Satellite Communication has evolved
from a sci-fi concept into a vital technology for
our data-hungry world.
• It breaks through the bottleneck of traditional
radio frequencies, offering 10 to 100 times more
data.
• By providing faster, lighter, and more
secure connections, it is essential for future
defense networks, global internet constellations
(like Starlink), and deep space exploration.
• This technology is a perfect example of how
shifting to a higher frequency on the light
spectrum can revolutionize global connectivity.

7. References

REFERENCES
• https://en.wikipedia.org/wiki/Laser_communication_in_space
• https://www.azooptics.com/article.aspx?ArticleID=2119
• https://www.iof.fraunhofer.de/en/pressrelease/2025/Satellite-based-laser-communication-forseries-production.html
• https://www.tno.nl/en/digital/space/laser-satellite-communication/laser-satellitecommunication/?ctc-page=1&ctc-type=article
• https://www.abiresearch.com/blog/laser-satellite-communication-lasercom
• https://www.esa.int/Applications/Connectivity_and_Secure_Communications/World-first_gigabitper-second_laser_link_between_aircraft_and_geostationary_satellite?rand=771654