Google balloon(project loon)

Internet access from balloon network

Introdution• Many of us think of the Internet as a global

community.

• But two-thirds of the world’s population does not yet have Internet access.

• Solution:Balloon powered internet

• Fastest, easier and cheaper way .

Contents1.What is Project Loon?2.History .3.The Technology.4.Loons Antennas.5.Questions related to loon.6.Challenges.7.Conclusion.

What is Project Loon?• Internet access for those areas of the earth

where regular Internet isn’t a good option.

• It is a global network of high altitude balloons.

• Internet access comparable to 3G networks • Stay aloft for 100+ days at a time far longer

than typical weather balloons.

• They are steerable and entirely solar powered.

• Uses wind data from the National Oceanic and Atmospheric Administration (NOAA).

• Helps to cover gaps.

• Concept :create a fleet of atmospheric satellites that can talk to each other and to the ground.

• Rich DeVaul, chief technical architect.

• Mike Cassidy, a project leader

• Cyrus Behroozi, a networking and telecommunication lead.

History

• In 2008,Google considered contracting Space Data Corp,but didn’t do so.

• 2011, the unofficial development of the project began under incubation in Google X.

• 16 June 2013,Google began a pilot experiment in new zealand.

• In May-June 2014 Google tested its balloon powered internet access venture in Piaui Brazil.

The Technology: How Loon moves?

*Travel approximately 20 km above the Earth’s surface in the stratosphere.

• Winds in the stratosphere are stratified.

• Each layer of wind varies in speed and direction.

• Uses software algorithms to determine where its balloons need to go

• Form one large communications network.

Stratosphere • • Engineering challenges: • air pressure is 1% that at sea level• This thin atmosphere offers less protection

from UV radiation • Temperature can reach as low as -80°C.

• Advantages• Steady winds• Above weather events, wildlife, and airplanes.

The Technology:How Loon connects?

• Provide connectivity to a ground area about 40 km in diameter

• Project Loon uses ISM bands (Specifically 2.4 and 5.8 GHz bands).

• Each balloon is equipped with GPS for tracking it’s location.

The Technology :How Loon is designedE

ENVELOPE*The inflatable part of the balloon ,of Helium

*Material: Sheets of polyethylene plastic..

*Dimensions: fifteen meters wide by twelve meters tall when fully inflated

.

Solar panels

• It uses high efficiency monocrystalline solar cells.

• The panels produce approximately 100 Watts of power in full sun.

Electronics

• A small box (10 kg)

• circuit boards that control the system

• radio antennas

• lithium ion batteries

Loon’s Antenna • Main components inside

the shell: -the radio -the antenna -Reflector• Two antennas• Dual polarized antennas

Equipment Failure in air?

• Gas is released from the envelope to bring the balloon down to Earth in a controlled descent.

• In the unlikely event that a balloon drops too quickly, a parachute attached to the top of the envelope is deployed

How does cold effect Loon battery?

• lithium ion batteries don't do very well in the cold.

• Whole system is insulted to reflect and trap heat that coming off electronics.

• Multi-layer insulation is used.

Challenges

• Balloon control:

• Balloon life:

• Signal strength:

• Wi-Fi connectivity:

• Flight control.

• Coverage area:

Conclusion• This project is still experimental.

• The project uses high-altitude balloons placed in the stratosphere

• Connect to the balloon network using a special Internet antenna .

• Google believes it will be a feasible ,cost-effective and reliable project.

References

• http://www.google.co.in/loon/

• http://en.wikipedia.org/wiki/Project_Loon

• http://my.umbc.edu/groups/ieee/media/726

• http://www.youtube.com/user/ProjectLoon

Thank You

Any Questions??