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INTRODUCTION


WHAT IS PROJECT LOON? :
• It’s a project by GOOGLE
• Project that aims to provide Internet all over the world via a ring of balloons floating in the sky about 20 kilometers above the ground



WHY PROJECT LOON? :
• Many of us think of the internet as the global community. But two-third of the world’s population does not yet have the internet access.


THE PILOT TEST:
• Project Loon start in June 2013.
• 20 balloons launched from New Zealand’s South Island.
• Pilot testers will be used to refine the technology.


THE TECHNOLOGY:
• Project Loon balloons float in the stratosphere as twice as high as airplanes and the weather.


• They are carried around the Earth by winds and they can be steered by rising or descending to an altitude with winds moving in the desired direction.
• People connect to the balloon network using a special internet antenna attached to their building.
• The signal bounces from balloons then to the global internet back on Earth.


THE LOON PROJECT:
• Project Loon is an initiative to create a network of high altitude balloons that could provide an Internet connection to anyone below.


HOW IT CONNECTS:
• Specialized Internet antenna on the ground sends signals to balloon.
• Balloon sends signals to neighboring balloons.
• Signals reach ground station connected to local Internet provider, which provides service through the network of balloons.


STRATOSPHERE:
• Air pressure is 1% of that at the sea level.
• Temperatures hover around -50 degrees centigrade.
• Thinner atmosphere offers less protection from the UV radiation.
• Temperature swings caused by the sun’s rays.


HOW LOON MOVES? :
• Project loon balloons travel around 20 kms above the Earth’s surface in the stratosphere.
• Winds in the stratosphere are generally steady and slow moving at between 5 and 20 mph, and each layer of wind varies in direction and magnitude.

HOW LOONS ARE DESIGNED? :
• Loons consists of three parts.
1. ENVELOPE
2. SOLAR PANEL
3. EQUIPMENT



HOW LOON IS DESIGNED? :
1. ENVELOPE:
• Made from sheets of polyethylene plastic.
• 15 m wide and 12 m tall on full when fully inflated.
• Designed with stand high pressures.
• Use parachute



HOW LOON CONNECTS? :
• Each balloon is equipped with a GPS tracking its location.
• Each balloon can provide connectivity to a ground area about 40 kms in diameter at speeds comparable to 3G.
• Three radio transceivers.
Balloon-to-balloon communications.
Balloon-to-ground communications.
Third for backup.
• The balloons use antennas equipped with specialized radio frequency technology.
• Project Loon currently uses ISM bands that are available for anyone to use.



ISM BANDS:
• The industrial, scientific and medical (ISM) radio bands.
• Radio bands reserved internationally for the use of radio frequency (RF) energy for industrial, scientific and medical purposes other than communications.


HOW DOES ANTENNA RECEIVE A CLEAR SIGNAL? :
• Polarization means direction of electromagnetic waves oscillating with the wind.
• To avoid this cross-polarization issue, 2 antennas are placed to receive signals driving in any direction and making their bandwidth double.


ADVANTAGES:
• Lower cost
• Availability of information
• Education and health
• Use of Renewable Energy
• Weather Surveillance



DISADVANTAGES:
• Hardware failure
• Internet privacy
• Not a replacement of Satellite Communication
• Cost
• Maintenance



CONCLUSION:
• Project Loon is an ambitious project and the world will highly benefit from it.
• Project Loon, an initiative to help fill in those internet gaps through the use of networked balloons.
• The goal is to provide broadband-like internet for the two-thirds of the world that doesn’t have access to a reliable internet connection by balloon.
• It is still in experimental phase.